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Tortoli E, Pellicciari L, Giovannico G, Tak I. Return to running criteria after anterior cruciate ligament reconstruction: an online survey of 1404 Italian physiotherapists. J Sports Med Phys Fitness 2024; 64:931-941. [PMID: 38863416 DOI: 10.23736/s0022-4707.24.15811-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
BACKGROUND The aim of this study is to study the clinical decision-making practice of Italian physiotherapists in return to running (RTR) after anterior cruciate ligament (ACL) reconstruction, and the differences in decision-making in relation to physiotherapist's characteristics. METHODS An online survey was developed, 1404 physiotherapists were contacted by email, via chartered association, or via social media. RESULTS Most respondents (83%) indicated that the RTR decision should be made by a multidisciplinary team with RTR clearance around 3-4 months after surgery (47%). The most important criteria guiding the RTR decision were knee flexion range of motion (ROM) >130° (50%), complete extension ROM (95%), no pain (45%) and no effusion (68%). A Limb Symmetry Index (LSI) >70% for quadriceps (49%), hamstring (48%) and LSI >90% for posterolateral hip (45%) and triceps surae strength (42%) should be achieved for RTR. Approximately half of the participants (49%) do not consider ACL laxity tests to be used for RTR decisions. Response differences were found between sample subgroups. More experienced physiotherapists and those with post graduate training had lower thresholds to clear RTR. CONCLUSIONS Experienced physiotherapists who treated a higher number of patients after ACL reconstruction, who had certified specialist training and a specific interest towards ACL rehabilitation, generally reported clinical practice modalities more in line with current evidence.
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Affiliation(s)
- Emanuele Tortoli
- Department of Medicine and Health Science "Vincenzo Tiberio", University of Molise, Campobasso, Italy -
| | | | - Giuseppe Giovannico
- Department of Medicine and Health Science "Vincenzo Tiberio", University of Molise, Campobasso, Italy
| | - Igor Tak
- Sports Rehabilitation and Manual Therapy, Fysiotherapie Utrecht Oost, Utrecht, the Netherlands
- Amsterdam Collaboration on Health and Safety in Sports (ACHSS), AMC/VUmc IOC Research Center, Amsterdam UMC, Amsterdam, the Netherlands
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Tayfur B, Keneen Johnson A, Palmieri-Smith R. Changes in Quadriceps Rate of Torque Development After Anterior Cruciate Ligament Reconstruction and Association to Single-Leg Hop Distance. Sports Health 2024; 16:808-816. [PMID: 37873996 PMCID: PMC11346242 DOI: 10.1177/19417381231205295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023] Open
Abstract
BACKGROUND Quadriceps neuromuscular function is negatively affected after anterior cruciate ligament reconstruction (ACLR). The specific effect that the ACLR has on the quadriceps femoris rate of force production and its impact on functional recovery is unknown. HYPOTHESIS The anterior cruciate ligament (ACL) limb would present persistent deficits in the rate of torque development (RTD), when compared with the non-ACL limb before ACLR until 9 months (9M) post-ACLR. STUDY DESIGN Prospective cohort study. LEVEL OF EVIDENCE Level 3. METHODS Twenty-eight participants performed quadriceps maximum voluntary isometric contractions (MVICs) before (PRE), at 5 months (5M) and at 9M after ACLR. Single-leg hop distance was also assessed at 9M. Quadriceps RTD was calculated at 50, 100, and 200 ms after the onset of torque production. Maximum RTD was also calculated. A 2 (limb) × 3 (time) repeated-measures analysis of variance was used for RTD50, RTD100, RTD200, and RTDmax. Linear regressions were used to evaluate the associations of MVIC and RTD values at 5M and 9M with single-leg hop distance at 9M. RESULTS The ACL limb had lower RTD values at all times compared with the non-ACL limb (P < 0.05). RTD of the ACL limb significantly decreased from PRE to 5M, and then recovered to PRE levels at 9M (P < 0.05). The non-ACL limb displayed no differences from baseline to either 5M or 9M. MVIC and RTD200 at 5M predicted (R2 = 0.313 and R2 = 0.262, respectively) single-leg hop distance at 9M, better than the strength and RTD at 9M (R2 = 0.235 and R2 = 0.128, respectively). CONCLUSION Quadriceps RTD is negatively affected after ACLR, and deficits may persist at the time of return to activity. Strength and RTD during recovery at 5M may predict more than 25% of the variance in single-leg hop distance at 9M, independently; hence, both provide important information to monitor functional recovery post-ACLR. CLINICAL RELEVANCE RTD should be measured to understand the changes in neuromuscular capacity after ACLR, and rehabilitation strategies that target quick force production, ie, quick muscle activation and functional tasks, should be implemented.
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Affiliation(s)
- Beyza Tayfur
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan
- Orthopedic Rehabilitation and Biomechanics (ORB) Laboratory, University of Michigan, Ann Arbor, Michigan
| | - Alexa Keneen Johnson
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan
- Orthopedic Rehabilitation and Biomechanics (ORB) Laboratory, University of Michigan, Ann Arbor, Michigan
| | - Riann Palmieri-Smith
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan
- Orthopedic Rehabilitation and Biomechanics (ORB) Laboratory, University of Michigan, Ann Arbor, Michigan
- Department of Orthopaedic Surgery, Michigan Medicine, Ann Arbor, Michigan
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Ito N, Capin JJ, Arhos EK, Wellsandt E, Pohlig RT, Buchanan TS, Snyder-Mackler L. Prolonged quadriceps latency during gait early after anterior cruciate ligament injury predicts radiographic knee osteoarthritis 6-years after anterior cruciate ligament reconstruction. Clin Biomech (Bristol, Avon) 2024; 117:106301. [PMID: 38945068 PMCID: PMC11250627 DOI: 10.1016/j.clinbiomech.2024.106301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 06/25/2024] [Accepted: 06/26/2024] [Indexed: 07/02/2024]
Abstract
BACKGROUND The purpose was to explore quadriceps electromechanical function (quadriceps latency) during gait after anterior cruciate ligament injury as a predictor for radiographic knee osteoarthritis 6-years after anterior cruciate ligament reconstruction. Change in latency after preoperative physical therapy was also examined. METHODS Quadriceps latency (time between peak knee moment and quadriceps electromyography) was calculated before preoperative physical therapy (2.4 [0.5-7.5] months after anterior cruciate ligament injury) and after preoperative physical therapy in 24 athletes. Participants were dichotomized into osteoarthritis (Kellgren and Lawrence grade ≥ 2) and non-osteoarthritis groups at 6-years. Forward selection logistic regression was performed using z-score normalized quadriceps latency and demographics. A 2 × 2 repeated measure ANOVA was performed for quadriceps latency between groups before and after preoperative physical therapy. FINDINGS Quadriceps latency before preoperative physical therapy was the only predictor of 6-year radiographic osteoarthritis (p = 0.014, odds ratio [95% confidence interval] = 5.859 [1.435-23.924]). Time by group interaction was observed for quadriceps latency (p = 0.039, η2p = 0.179). In the osteoarthritis group, latency may reduce after training (before preoperative physical therapy = 115.7 ± 20.6 ms, after preoperative physical therapy = 99.5 ± 24.0 ms, p = 0.082). INTERPRETATION Prolonged latency after anterior cruciate ligament injury may predict post-traumatic knee osteoarthritis 6-years after anterior cruciate ligament reconstruction. Latency may shorten with preoperative physical therapy, yet athletes still moved on to develop osteoarthritis. Quadriceps function may need intervention immediately following anterior cruciate ligament injury for prevention of post-traumatic knee osteoarthritis.
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Affiliation(s)
- Naoaki Ito
- Biomechanics and Movement Science Program, University of Delaware, Newark, DE, USA; Department of Physical Therapy, University of Delaware, Newark, DE, USA; Department of Orthopedics and Rehabilitation, University of Wisconsin - Madison, Madison, WI, USA; Badger Athletic Performance Program, University of Wisconsin - Madison, Madison, WI, USA.
| | - Jacob J Capin
- Department of Physical Therapy, Marquette University, Milwaukee, WI, USA; Medical College of Wisconsin, Clinical and Translational Science Institute, Milwaukee, WI, USA
| | - Elanna K Arhos
- Division of Physical Therapy, School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, USA
| | - Elizabeth Wellsandt
- Physical Therapy Program, Department of Health and Rehabilitation Sciences, University of Nebraska Medical Center, Omaha, NE, USA
| | - Ryan T Pohlig
- Biostatistic Core Facility, College of Health Sciences, University of Delaware, Newark, DE, USA
| | - Thomas S Buchanan
- Biomechanics and Movement Science Program, University of Delaware, Newark, DE, USA; Department of Biomedical Engineering, University of Delaware, Newark, DE, USA; Department of Mechanical Engineering, University of Delaware, Newark, DE, USA
| | - Lynn Snyder-Mackler
- Biomechanics and Movement Science Program, University of Delaware, Newark, DE, USA; Department of Physical Therapy, University of Delaware, Newark, DE, USA
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Battersby HS, Holmes SC, Shumski EJ, Heredia CE, Garcia SA, Pamukoff DN. The Influence of Knee Position on Ultrasound Imaging of Femoral Cartilage in Individuals with Anterior Cruciate Ligament Reconstruction. Cartilage 2024; 15:84-93. [PMID: 37846037 PMCID: PMC11368891 DOI: 10.1177/19476035231205682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 08/07/2023] [Accepted: 09/09/2023] [Indexed: 10/18/2023] Open
Abstract
BACKGROUND Articular cartilage is important for knee function and can be imaged using ultrasound. The purpose was to compare femoral cartilage thickness and echo intensity (EI) measured at 90° and 140° of knee flexion and between limbs in a cohort with unilateral anterior cruciate ligament reconstruction (ACLR). We also examined associations between gait biomechanics and cartilage outcomes. METHODS Twenty-seven individuals with primary unilateral ACLR participated (12 men, 15 women; age = 22.3 ± 3.8 years; time since ACLR = 71.2 ± 47.2 months). Ultrasound was used to obtain femoral cartilage measurements. Gait outcomes included peak KFA (knee flexion angle) and peak external knee flexion moment (KFM). Cartilage outcomes were compared using a 2 (position) × 2 (limb) repeated measures ANOVA (analysis of variance). Gait and cartilage associations were assessed using linear regression. FINDINGS There were no position × limb interactions for any cartilage outcome (all P > 0.05). Medial (P = 0.038) and central cartilage (P < 0.001) were thicker, whereas central (P = 0.029) and lateral cartilage EI (P = 0.003) were lower when measured at 90° than those at 140° of knee flexion. Medial cartilage was thicker in the ACLR than that in the contralateral limb (P = 0.016). A larger KFM was associated with thicker medial cartilage (ΔR2 = 0.146, P = 0.021) and central cartilage (ΔR2 = 0.159, P = 0.039) measured at 140° of knee flexion in the ACLR limb but not at 90°. INTERPRETATION Findings suggest that imaging position influences cartilage thickness and EI measurements in individuals with ACLR and should be considered in study designs and clinical evaluation. A greater KFM was associated with thicker cartilage within specific portions of the distal femur.
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Affiliation(s)
| | - Skylar C. Holmes
- Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, USA
| | - Eric J. Shumski
- Department of Kinesiology, University of Georgia, Athens, GA, USA
| | | | - Steven A. Garcia
- School of Kinesiology, University of Michigan, Ann Arbor, MI, USA
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Jordan CM, Kim S, Glaviano NR. Hip rate of torque development, but not strength, is associated with single-leg squat kinematics in individuals with patellofemoral pain. Physiother Theory Pract 2024:1-9. [PMID: 38813879 DOI: 10.1080/09593985.2024.2360578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 05/22/2024] [Indexed: 05/31/2024]
Abstract
INTRODUCTION Isometric hip strength seems to have limited association with frontal plane kinematics in individuals with patellofemoral pain (PFP), but little is known about the association with hip rate of torque development (RTD). OBJECTIVE To explore the association of hip strength and RTD with trunk, pelvis, hip, and knee kinematics during a single-leg squat (SLS) in individuals with PFP. METHODS Twenty individuals with PFP participated in this study. Hip abductor and extensor strength and RTD (early phase and late phase) were assessed using a hand-held dynamometer. Lateral trunk motion, pelvic drop, hip frontal plane projection angle (HFPPA), and knee frontal plane projection angle (KFPPA) were evaluated during a SLS using a two-dimensional motion analysis. RESULTS Lower early and late phase hip abductor RTD were moderately associated with greater HFPPA (early phase: r = -0.501, p = .025; late phase: r = -0.580, p = .007) and KFPPA (early phase: r = -0.536, p = .015; late phase: r = -0.554, p = .011). Lower early phase hip extensor RTD was moderately associated with greater pelvic drop (r = 0.571, p = .009), HFPPA (r = -0.548, p = .012), and KFPPA (r = -0.530, p = .016). Hip abductor and extensor strength were not associated with any kinematic variables (p > .05). CONCLUSION Lower hip RTD, but not strength, was associated with greater frontal plane kinematics during a SLS in individuals with PFP, indicating that the ability to produce torque rapidly may be important for kinematic control during functional tasks.
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Affiliation(s)
- Cara M Jordan
- Department of Kinesiology, University of Connecticut, Storrs, CT, USA
| | - Sungwan Kim
- Department of Kinesiology, University of Connecticut, Storrs, CT, USA
- Institute for Sports Medicine, University of Connecticut, Storrs, CT, USA
| | - Neal R Glaviano
- Department of Kinesiology, University of Connecticut, Storrs, CT, USA
- Institute for Sports Medicine, University of Connecticut, Storrs, CT, USA
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Qiu J, Ong MTY, Choi CY, He X, Lau LCM, Fu SC, Fong DTP, Yung PSH. Associations of patient characteristics, rate of torque development, voluntary activation of quadriceps with quadriceps strength, and knee function before anterior cruciate ligament reconstruction. Res Sports Med 2024; 32:491-503. [PMID: 36254570 DOI: 10.1080/15438627.2022.2132860] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/28/2022] [Indexed: 10/24/2022]
Abstract
Good preoperative knee function (KF) and quadriceps strength (QS) relate to good prognoses after anterior cruciate ligament reconstruction (ACLR). This study aimed to investigate the associations between patient characteristics, rate of torque development (RTD), voluntary activation (VA) of the quadriceps against preoperative KF and QS. A cross-sectional study was conducted. Forty patients with a primary, unilateral ACL injury who had finished the preoperative rehabilitation and scheduled for an ACLR were included. KF was evaluated using the International Knee Documentation Committee score. QS was measured by maximal voluntary isometric contractions. RTD was divided into the early (RTD0-50) and the late (RTD100-200) phases. Quadriceps VA was measured using the superimposed burst technique. Our results showed that patients with poor preoperative KF had more deficits in RTD0-50 (P = 0.025), higher BMI(P = 0.043), and more meniscus injuries (MI) (P = 0.001) than those with good KF. Patients with asymmetrical QS showed lower BMI (P = 0.020) and shorter time from injury (TFI) (P = 0.027) than those with symmetrical QS. Additionally, a higher pre-injury Tegner score combined with greater RTD100-200 contributed to greater QS on the injured limb (R2 = 0.357, P = 0.001). To conclude, BMI, TFI, concomitant MI, pre-injury physical activity level, and quadriceps RTD are related to QS and KF before ACLR.
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Affiliation(s)
- Jihong Qiu
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Michael Tim-Yun Ong
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Chi-Yin Choi
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xin He
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Lawrence Chun-Man Lau
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Sai-Chuen Fu
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Lui Che Woo Institute of Innovative Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Daniel T P Fong
- National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Patrick Shu-Hang Yung
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Lui Che Woo Institute of Innovative Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
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Johnston CD, Dewig DR, Pietrosimone B, Padua D, Ryan ED, Hart J, Spang J, Blackburn T. Longitudinal Changes in Quadriceps Morphology over the First 3 Months after Anterior Cruciate Ligament Reconstruction. Med Sci Sports Exerc 2024; 56:933-941. [PMID: 38109204 DOI: 10.1249/mss.0000000000003359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
PURPOSE Neuromuscular deficits and atrophy after anterior cruciate ligament reconstruction (ACLR) may be accompanied by changes in muscle composition and poor quadriceps muscle quality (QMQ). Quadriceps atrophy occurs after ACLR but improves within the first three postoperative months, yet this hypertrophy could be attributable to increases in noncontractile tissue (i.e., poor QMQ). The purposes of this study were to evaluate changes in QMQ after ACLR and to determine if changes in QMQ and cross-sectional area (CSA) occur in parallel or independently. METHODS A longitudinal prospective cohort design was implemented to evaluate QMQ and CSA in 20 individuals with ACLR and 12 healthy controls. Participants completed three testing sessions (baseline/presurgery, 1 month, and 3 months) during which ultrasound images were obtained from the vastus lateralis (VL) and rectus femoris (RF). QMQ was calculated as the echo intensity (EI) of each image, with high EI representing poorer QMQ. Anatomical CSA was also obtained from each image. RESULTS RF and VL EI were greater at 1 and 3 months in the ACLR limb compared with baseline and the contralateral limb and did not change between 1 and 3 months. VL and RF CSA in the ACLR limb were smaller at 1 and 3 months compared with the contralateral limb and controls (VL only) but increased from 1 to 3 months. Changes in QMQ and CSA were not correlated. CONCLUSIONS QMQ declines within the first month after ACLR and does not improve by 3 months although hypertrophy occurs, suggesting that these morphological characteristics change independently after ACLR. Poorer QMQ represents greater concentration of noncontractile tissues within the muscle and potentially contributes to chronic quadriceps dysfunction observed after ACLR.
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Affiliation(s)
| | - Derek R Dewig
- Department of Health and Human Performance, Fairmont State University, Fairmont, WV
| | - Brian Pietrosimone
- Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Darin Padua
- Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Eric D Ryan
- Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Joe Hart
- Department of Orthopaedics, School of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Jeffrey Spang
- Department of Orthopaedics, School of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Troy Blackburn
- Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, Chapel Hill, NC
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Peng P, Lu Y, Wang Y, Sui X, Yang Z, Xu H, Zhang S. Effect of Low-Intensity Bloodflow Restriction Training on Nontraumatic Knee Joint Conditions: A Systematic Review and Meta-analysis. Sports Health 2024:19417381241235147. [PMID: 38587041 DOI: 10.1177/19417381241235147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024] Open
Abstract
CONTEXT Nontraumatic knee conditions are common in clinical practice. Existing pharmaceutical and immobilization approaches provide limited pain relief and functional enhancement. Low-intensity bloodflow restriction training (LI-BFRT) is being investigated as a nonpharmacological alternative; however, its efficacy is uncertain. OBJECTIVE To assess the effectiveness of LI-BFRT for nontraumatic knee conditions and compare it with high-intensity resistance training (HI-RT) and low-intensity resistance training (LI-RT). DATA SOURCES PubMed, EBSCO, Science Direct, Cochrane Library, China Knowledge Infrastructure, Wanfang Data, and VIP databases were searched until May 30, 2023. STUDY SELECTION Original randomized controlled trials involving nontraumatic knee joint conditions with interventions consisting mainly of LI-BFRT, HI-RT, or LI-RT. The results assessed mainly pain and muscle performance. STUDY DESIGN Systematic review and meta-analysis. LEVEL OF EVIDENCE Level 1. DATA EXTRACTION Sample characteristics, study design, country, disease, groups, evaluation time, duration, and outcomes were extracted. RESULTS A total of 13 randomized controlled trials were included in the systematic review. Compared with pretreatment, LI-BFRT significantly alleviated pain (weighted standardized mean difference [SMD], -1.33; 95% CI, -1.62 to -1.05), with better additional effects on hip muscle training (SMD, -3.14; 95% CI, -4.07 to -2.75). Compared with LI-RT, LI-BFRT significantly relieved pain in male patients (SMD, -1.47; 95% CI, -1.92 to -1.01). LI-BFRT significantly increased quadriceps cross-sectional area (SMD, 0.53; 95% CI, 0.27-0.78), knee extension strength (SMD, 0.84; 95% CI, 0.48-1.2), and leg press strength (SMD, 0.64; 95% CI, 0.34-0.94) compared with pretreatment. Its effects were superior to those of LI-RT and similar to those of HI-RT. However, sex differences in muscle strength improvement were observed. CONCLUSION In patients with nontraumatic knee joint conditions, LI-BFRT effectively alleviated pain, increased muscle cross-sectional area, and enhanced muscle strength. LI-BFRT showed pain relief comparable with that of LI-RT while surpassing LI-RT in muscle growth and strength improvement.
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Affiliation(s)
- PeiQiang Peng
- School of Nursing, Jilin University, Chaoyang District, Changchun, China
| | - Yuming Lu
- Department of Orthopedics, Lequn Branch, The First Hospital of Jilin University, District, Changchun, China
| | - YueTing Wang
- School of Nursing, Jilin University, Chaoyang District, Changchun, China
| | - Xin Sui
- School of Nursing, Jilin University, Chaoyang District, Changchun, China
| | - Zhenning Yang
- School of Nursing, Jilin University, Chaoyang District, Changchun, China
| | - Haiyan Xu
- School of Nursing, Jilin University, Chaoyang District, Changchun, China
| | - Shuang Zhang
- School of Nursing, Jilin University, Chaoyang District, Changchun, China
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Nilius A, Dewig DR, Johnston CD, Pietrosimone BG, Blackburn JT. Quadriceps composition and function influence downhill gait biomechanics >1 year following anterior cruciate ligament reconstruction. Clin Biomech (Bristol, Avon) 2024; 114:106229. [PMID: 38490072 DOI: 10.1016/j.clinbiomech.2024.106229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 03/08/2024] [Accepted: 03/11/2024] [Indexed: 03/17/2024]
Abstract
BACKGROUND Quadriceps dysfunction is common following anterior cruciate ligament reconstruction and contributes to aberrant gait biomechanics. Changes in quadriceps composition also occur in these patients including greater concentrations of non-contractile tissue. The purpose of this study was to evaluate associations between quadriceps composition, function, and gait biomechanics in individuals with anterior cruciate ligament reconstruction. METHODS Forty-eight volunteers with anterior cruciate ligament reconstruction completed gait biomechanics and quadriceps function and composition assessments. Gait biomechanics were sampled during downhill walking (-10° slope) on an instrumented treadmill. Quadriceps function (peak torque and rate of torque development) was assessed via maximal isometric contractions, while composition was evaluated via ultrasound echo intensity. FINDINGS Greater quadriceps peak torque was associated with a greater peak knee extension moment (r = 0.365, p = 0.015). Greater vastus lateralis echo intensity (i.e. poorer muscle quality) was associated with less knee flexion displacement (r = -0.316, p = 0.032). Greater echo intensity of the vastus lateralis (r = -0.298, p = 0.044) and rectus femoris (r = -0.322, p = 0.029) was associated with a more abducted knee angle at heel strike. Quadriceps peak torque explained 11-16% of the variance in echo intensity. INTERPRETATION Both quadriceps function and composition influence aberrant gait biomechanics following anterior cruciate ligament reconstruction. Quadriceps composition appears to provide insight into quadriceps dysfunction independent of muscle strength, as they associated with different gait biomechanics outcomes and shared minimal variance. Future research is necessary to determine the influence of changes in quadriceps composition on joint health outcomes.
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Affiliation(s)
- Alex Nilius
- Program in Human Movement Science, University of North Carolina at Chapel Hill, USA; MOTION Science Institute, University of North Carolina at Chapel Hill, USA; Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, USA
| | - Derek R Dewig
- College of Education, Health & Human Performance, Fairmont State University, USA
| | | | - Brian G Pietrosimone
- Program in Human Movement Science, University of North Carolina at Chapel Hill, USA; MOTION Science Institute, University of North Carolina at Chapel Hill, USA; Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, USA
| | - J Troy Blackburn
- Program in Human Movement Science, University of North Carolina at Chapel Hill, USA; MOTION Science Institute, University of North Carolina at Chapel Hill, USA; Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, USA.
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10
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Buck AN, Lisee C, Bjornsen E, Büttner C, Birchmeier T, Nilius A, Favoreto N, Spang J, Blackburn T, Pietrosimone B. Acutely Normalizing Walking Speed Does Not Normalize Gait Biomechanics Post-Anterior Cruciate Ligament Reconstruction. Med Sci Sports Exerc 2024; 56:464-475. [PMID: 38051127 PMCID: PMC10922289 DOI: 10.1249/mss.0000000000003330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
PURPOSE To determine the effect of acutely increasing walking speed on gait biomechanics in ACLR individuals compared with their habitual speed and uninjured matched-controls. METHODS Gait biomechanics were collected on 30 ACLR individuals (20 females; age, 22.0 ± 4.2 yr; body mass index, 24.0 ± 3.0 kg·m -2 ) at their habitual speed and at 1.3 m·s -1 , a speed similar to controls, and 30 uninjured matched-controls (age: 21.9 ± 3.8, body mass index: 23.6 ± 2.5) at their habitual speed. Functional waveform analyses compared biomechanics between: i) walking at habitual speed vs 1.3 m·s -1 in ACLR individuals; and ii) ACLR individuals at 1.3 m·s -1 vs controls. RESULTS In the ACLR group, there were no statistically significant biomechanical differences between walking at habitual speed (1.18 ± 0.12 m·s -1 ) and 1.3 m·s -1 (1.29 ± 0.05 m·s -1 ). Compared with controls (habitual speed: 1.34 ± 0.12 m·s -1 ), the ACLR group while walking at 1.3 m·s -1 exhibited smaller vertical ground reaction force (vGRF) during early and late stance (13-28, 78-90% stance phase), greater midstance vGRF (47-61%), smaller early-to-midstance knee flexion angle (KFA; 1-44%), greater mid-to-late stance KFA (68-73, 96-101%), greater internal knee abduction moment (69-101%), and smaller internal knee extension moment (4-51, 88-96%). CONCLUSIONS Increasing walking speed to a speed similar to uninjured controls did not elicit significant changes to gait biomechanics, and ACLR individuals continued to demonstrate biomechanical profiles that are associated with PTOA development and differ from controls.
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Affiliation(s)
| | - Caroline Lisee
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | | | | | - Thomas Birchmeier
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | | | - Natalia Favoreto
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Jeffrey Spang
- Department of Orthopaedics, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Troy Blackburn
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Brian Pietrosimone
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC
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11
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Pamukoff DN, Holmes SC, Heredia CE, Shumski EJ, Garcia SA, Montgomery MM. Cartilage deformation following a walking bout in individuals with anterior cruciate ligament reconstruction. J Orthop Res 2024; 42:349-359. [PMID: 37772457 DOI: 10.1002/jor.25694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 08/16/2023] [Accepted: 09/20/2023] [Indexed: 09/30/2023]
Abstract
The purpose was to (1) compare the effect of a walking bout on femoral cartilage deformation between limbs with and without anterior cruciate ligament reconstruction (ACLR) and (2) examine the association between gait kinetics and the magnitude of cartilage deformation. A total of 30 individuals with primary unilateral ACLR completed this study [14 male, 16 female; age = 22.57 (3.78) years; body mass index (BMI) = 25.88 (5.68) kg/m2 ; time since ACLR = 61.00 (16.43) months]. Overground walking biomechanics were assessed on day 1, and a 30-min walking bout or 30-min resting bout (control) were completed on days 2 and 3 (counterbalanced order). Femoral cartilage thickness was measured using ultrasound before, immediately following, and 30-min following each intervention. Linear mixed effects models compared the effect of walking on cartilage thickness between the ACLR and contralateral limbs after adjusting for sex, BMI, speed, and the number of steps. Stepwise regression examined the association between the external knee flexion and adduction moments and cartilage deformation following walking. There was a significant limb × time interaction for medial cartilage thickness. Post hoc analyses indicated that cartilage thickness decreased immediately following walking in the contralateral but not ACLR limb. Main effects of limb were observed for medial, central, and lateral cartilage thickness indicating thicker cartilage in the ACLR compared with contralateral limb. A higher knee adduction moment was associated with greater cartilage deformation in the ACLR limb. Femoral cartilage in the ACLR limb exhibited a less dynamic response to walking than the uninvolved limb, which may be due to habitual underloading during gait.
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Affiliation(s)
- Derek N Pamukoff
- School of Kinesiology, Western University, London, Ontario, Canada
| | - Skylar C Holmes
- Department of Kinesiology, University of Massachusetts Amherst, Amherst, Massachusetts, USA
| | | | - Eric J Shumski
- Department of Kinesiology, University of Georgia, Athens, Georgia, USA
| | - Steven A Garcia
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Melissa M Montgomery
- Department of Kinesiology, California State University, Fullerton, Fullerton, California, USA
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12
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Qiu J, Choi CY, Man GCW, He X, Yu M, Cao M, Wang Q, Ng JP, Yung PSH, Ong MTY. Serum vitamin D insufficiency is correlated with quadriceps neuromuscular functions in patients with anterior cruciate ligament injury: A preliminary study. Asia Pac J Sports Med Arthrosc Rehabil Technol 2024; 35:76-80. [PMID: 38292822 PMCID: PMC10827444 DOI: 10.1016/j.asmart.2023.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 11/01/2023] [Accepted: 11/02/2023] [Indexed: 02/01/2024] Open
Abstract
Background This study aimed to investigate the correlations of serum vitamin D insufficiency with quadriceps neuromuscular function in patients with anterior cruciate ligament (ACL) injury. Methods A cross-sectional study was conducted. Eighteen patients with a primary, unilateral ACL injury who had insufficient serum vitamin D concentrations (<30 ng/ml) were recruited for the study. Bilateral quadriceps neuromuscular function, including maximal strength, the speed of rapid contraction, and inhibition, were measured on an isokinetic dynamometer with the hip and the knee joint flexion at 90° and 45°, respectively. Quadriceps strength was measured by maximal voluntary isometric contractions (MVIC); the speed of rapid contraction was quantified by the rate of torque development (RTD), which was divided into the early (RTD0-50) and the late phase (RTD100-200); quadriceps inhibition was quantified by the central activation ratio (CAR). Serum vitamin D concentration was quantitatively determined by serum 25(OH)D concentration measured by the 25(OH)D ELISA kit. The Spearman rank correlation analysis was used to examine the correlation between the vitamin D concentration and bilateral quadriceps MVIC, RTD0-50, RTD100-200, and CAR, respectively. Results The results of Spearman rank correlation analyses showed that the serum 25(OH)D concentration was significantly correlated with bilateral quadriceps MVIC (injured: r = 0.574, p = 0.013; uninjured: r = 0.650, p = 0.003) and RTD0-50 (r = 0.651, p = 0.003), and CAR (r = 0.662, p = 0.003) on the uninjured limb. However, no significant correlations were found between the serum 25(OH)D concentration and the other outcomes. Conclusions The serum vitamin D concentration correlates with quadriceps neuromuscular function in patients with ACL injury who had vitamin D insufficiency.
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Affiliation(s)
- Jihong Qiu
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Chi-Yin Choi
- Department of Orthopaedices and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China
| | - Gene Chi-Wai Man
- Department of Orthopaedices and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China
| | - Xin He
- Department of Orthopaedices and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China
| | - Mingqian Yu
- Department of Orthopaedices and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China
| | - Mingde Cao
- Department of Orthopaedices and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China
| | - Qianwen Wang
- Department of Orthopaedices and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China
| | - Jonathan Patrick Ng
- Department of Orthopaedices and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China
| | - Patrick Shu-Hang Yung
- Department of Orthopaedices and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China
| | - Michael Tim-Yun Ong
- Department of Orthopaedices and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China
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13
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Qiu J, Jiang T, Ong MTY, He X, Choi CY, Fu SC, Fong DTP, Yung PSH. Bilateral impairments of quadriceps neuromuscular function occur early after anterior cruciate ligament injury. Res Sports Med 2024; 32:72-85. [PMID: 35635286 DOI: 10.1080/15438627.2022.2079986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 05/16/2022] [Indexed: 10/18/2022]
Abstract
The study aimed to investigate the impairments in quadriceps neuromuscular function, including strength, rate of torque development (RTD) and activation failure (QAF) early after an ACL injury. A cross-sectional study was conducted. Thirty physically active patients with a primary ACL injury within three months, aged 18 to 40 years old, and who were scheduled for ACL reconstruction were included. Thirty matched healthy controls were also recruited. All the outcomes were measured on an isokinetic dynamometer with knee flexion at 45°. Quadriceps strength was measured by maximal voluntary isometric contractions (MVIC). Early (RTD0-50) and late (RTD100-200) phases of RTD were retrieved from the MVIC test from 0 to 50 ms and 100-200 ms, respectively. QAF was quantified by the central activation ratio (CAR) measured by superimposed burst technique. The results of Mann-Whitney U test showed that compared with the healthy limbs, the injured limbs of the ACL group showed lower quadriceps strength (P < 0.001), RTD0-50 (P < 0.001) and RTD100-200 (P < 0.001); the uninjured limbs showed lower quadriceps strength (P = 0.009), RTD0-50 (P = 0.006) as well as greater QAF (P = 0.010). To conclude, bilateral quadriceps suffered from neuromuscular impairments early after an ACL injury.
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Affiliation(s)
- Jihong Qiu
- Department of Orthopaedics and Traumatology, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, China
| | - Tianzhi Jiang
- Department of Orthopaedics and Traumatology, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, China
| | - Michael Tim-Yun Ong
- Department of Orthopaedics and Traumatology, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xin He
- Department of Orthopaedics and Traumatology, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, China
| | - Chi-Yin Choi
- Department of Orthopaedics and Traumatology, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, China
| | - Sai-Chuen Fu
- Department of Orthopaedics and Traumatology, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, China
- Lui Che Woo Institute of Innovative Medicine, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, China
| | - Daniel T P Fong
- National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Patrick Shu-Hang Yung
- Department of Orthopaedics and Traumatology, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, China
- Lui Che Woo Institute of Innovative Medicine, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, China
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14
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Kim S, Glaviano NR, Park J. Exercise-induced fatigue affects knee proprioceptive acuity and quadriceps neuromuscular function more in patients with ACL reconstruction or meniscus surgery than in healthy individuals. Knee Surg Sports Traumatol Arthrosc 2023; 31:5428-5437. [PMID: 37787863 DOI: 10.1007/s00167-023-07596-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 09/18/2023] [Indexed: 10/04/2023]
Abstract
PURPOSE To observe how knee proprioceptive acuity and quadriceps neuromuscular function change during and after repeated isokinetic knee-extension exercise in patients with anterior cruciate ligament reconstruction (ACLR) or meniscus surgery. METHODS Patients with ACLR or meniscus surgery and matched controls (n = 19 in each group) performed knee-flexion replication at 15° and 75°, and quadriceps peak torque (PT), central activation ratio (CAR) and rate of torque development (RTD) at baseline and immediately after every five sets of isokinetic knee-extension exercise (times 1-5). RESULTS Compared to the baseline, the ACLR and control groups displayed errors in knee-flexion replication at 75° only at time 5 (115.9-155.6%; p ≤ 0.04, d ≥ 0.97), whereas the meniscus surgery group exhibited errors at all time points (142.5-265.6%; p ≤ 0.0003, d ≥ 1.4). Significant percentage reductions in quadriceps CAR were observed between times 4 and 5 in the ACLR group (-5.8%; p = 0.0002, d = 0.96), but not in the meniscus surgery (-1.4%; n.s.) and control (0.1%; n.s.) groups. Significant percentage reductions in quadriceps RTD were observed between times 4 and 5 in the ACLR (-24.2%; p = 0.007, d = 0.99) and meniscus surgery (-23.0%; p = 0.01, d = 0.85) groups, but not in the control group (-0.2%; n.s.). CONCLUSION Patients with ACLR or meniscus surgery displayed a greater loss in knee proprioceptive acuity and quadriceps neuromuscular function during and after exercise than healthy individuals. Evidence-based interventions to enhance exercise-induced fatigue resistance should be implemented following ACLR or meniscus surgery, aiming to prevent proprioceptive and neuromuscular changes within the knee joint and quadriceps. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Sungwan Kim
- Department of Sports Medicine, Kyung Hee University, Yongin, Republic of Korea
| | - Neal R Glaviano
- Department of Kinesiology, University of Connecticut, Storrs, CT, USA
| | - Jihong Park
- Department of Sports Medicine, Kyung Hee University, Yongin, Republic of Korea.
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15
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Knurr KA, Cobian DG, Kliethermes SA, Stiffler-Joachim MR, Heiderscheit BC. The Influence of Quadriceps Strength and Rate of Torque Development on the Recovery of Knee Biomechanics During Running After Anterior Cruciate Ligament Reconstruction. Am J Sports Med 2023; 51:3171-3178. [PMID: 37681433 PMCID: PMC10985737 DOI: 10.1177/03635465231194617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
BACKGROUND After anterior cruciate ligament reconstruction (ACLR), altered surgical knee biomechanics during running is common. Although greater quadriceps strength is associated with more symmetrical running knee kinetics after ACLR, abnormal running mechanics persist even after resolution of quadriceps strength deficits. As running is a submaximal effort task characterized by limited time to develop knee extensor torque, quadriceps rate of torque development (RTD) may be more closely associated with recovery of running knee mechanics than peak torque (PT). PURPOSE To assess the influence of recovery in quadriceps PT and RTD symmetry on knee kinematic and kinetic symmetry during running over the initial 2 years after ACLR. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS A total of 39 Division I collegiate athletes (106 testing sessions; 19 female) completed serial isometric performance testing and running analyses between 3 and 24 months after ACLR. Athletes performed maximal and rapid isometric knee extension efforts with each limb to assess PT and RTD between-limb symmetry indices (PTLSI and RTDLSI), respectively. Peak knee flexion difference (PKFDIFF) and peak knee extensor moment limb symmetry index (PKEMLSI) during running were computed. Multivariable linear mixed-effects models assessed the influence of PTLSI and RTDLSI on PKFDIFF and PKEMLSI over the initial 2 years after ACLR. RESULTS Significant main effects of RTDLSI (P < .001) and time (P≤ .02) but not PTLSI (P≥ .24) were observed for both PKFDIFF and PKEMLSI models. For a 10% increase in RTDLSI, while controlling for PTLSI and time, a 0.9° (95% CI, 0.5°-1.3°) reduction in PKFDIFF and a 3.5% (95% CI, 1.9%-5.1%) increase in PKEMLSI are expected. For every month after ACLR, a 0.2° (95% CI, 0.1°-0.4°) reduction in PKFDIFF and a 1.3% (95% CI, 0.6%-2.0%) increase in PKEMLSI are expected, controlling for PTLSI and RTDLSI. CONCLUSION Quadriceps RTDLSI was more strongly associated with symmetrical knee biomechanics during running compared with PTLSI or time throughout the first 2 years after ACLR.
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Affiliation(s)
- Keith A. Knurr
- Department of Orthopedics and Rehabilitation, University of Wisconsin–Madison, Madison, Wisconsin, USA
- Badger Athletic Performance Program, University of Wisconsin–Madison, Madison, Wisconsin, USA
- Department of Medicine, Division of Geriatrics, University of Wisconsin–Madison, Madison, Wisconsin, USA
| | - Daniel G. Cobian
- Department of Orthopedics and Rehabilitation, University of Wisconsin–Madison, Madison, Wisconsin, USA
- Badger Athletic Performance Program, University of Wisconsin–Madison, Madison, Wisconsin, USA
| | - Stephanie A. Kliethermes
- Department of Orthopedics and Rehabilitation, University of Wisconsin–Madison, Madison, Wisconsin, USA
- Badger Athletic Performance Program, University of Wisconsin–Madison, Madison, Wisconsin, USA
| | - Mikel R. Stiffler-Joachim
- Department of Orthopedics and Rehabilitation, University of Wisconsin–Madison, Madison, Wisconsin, USA
- Badger Athletic Performance Program, University of Wisconsin–Madison, Madison, Wisconsin, USA
| | - Bryan C. Heiderscheit
- Department of Orthopedics and Rehabilitation, University of Wisconsin–Madison, Madison, Wisconsin, USA
- Badger Athletic Performance Program, University of Wisconsin–Madison, Madison, Wisconsin, USA
- Department of Biomedical Engineering, University of Wisconsin–Madison, Madison, Wisconsin, USA
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16
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Davidson NA, Halkiadakis YK, Morgan KD. Classification Model for Differentiating Post-ACLR Individuals Using Loading Rate Variation. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2023; 2023:1-4. [PMID: 38082994 DOI: 10.1109/embc40787.2023.10340530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
In post-ACLR individuals, gait variability often represents the presence of altered motor control. Quantifying variable limb loading is challenging, yet nonlinear analyses have been successful in detecting changes in gait variability due to altered motor control. Here, nonlinear metrics were derived and used to train multiple machine learning models to classify between healthy controls and post-ACLR individuals. The metrics were extracted from individuals' vertical ground reaction force data during a fast-walking trial as variable limb loading is exacerbated when the system is stressed and being challenged. It was hypothesized that effective differentiation between healthy control and post-ACLR individuals would be achieved using machine learning models derived from limb loading rate variability measures. Seventeen healthy control and fourteen post-ACLR participants with measured between-limb loading rate asymmetries completed the walking protocol. Ground reaction force data was collected on an instrumented treadmill where they performed walking trials at 1.5 m/s. Nonlinear limb loading rate measures extracted from the healthy controls and post-ACLR participants' data served as inputs to the models in order to train them to distinguish between the two states. A Decision Tree Classifier that utilized a bagging strategy was the best model for distinguishing between healthy control and post-ACLR participants. The model was successful in classifying participants, reporting an accuracy score of 73%, precision score of 100%, and an AUC score of 0.77, despite the smaller dataset. The ability to detect and classify post-ACLR loading rate variation has significant clinical implications, as these methods could be implemented in clinical settings to diagnose pathological limb loading dynamics and/or altered motor control.Clinical Relevance- This classification model can be easily integrated into the clinic to help diagnose pathological limb loading based solely on vertical ground reaction forces and can aid clinicians in providing data-driven metrics to help inform rehabilitation decisions.
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17
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Cognetti DJ, Lynch TB, Rich E, Bedi A, Dhawan A, Sheean AJ. Quadriceps Dysfunction Following Joint Preservation Surgery: A Review of the Pathophysiologic Basis and Mitigation Strategies. Curr Rev Musculoskelet Med 2023:10.1007/s12178-023-09844-0. [PMID: 37243966 PMCID: PMC10382434 DOI: 10.1007/s12178-023-09844-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/10/2023] [Indexed: 05/29/2023]
Abstract
PURPOSE OF REVIEW To characterize quadriceps muscle dysfunction associated with knee joint preservation surgery, with a focus on its pathophysiology and promising approaches to mitigate its impact on clinical outcomes. RECENT FINDINGS Quadriceps dysfunction (QD) associated with knee joint preservation surgery results from a complex interplay of signaling, related to changes within the joint and from those involving the overlying muscular envelope. Despite intensive rehabilitation regimens, QD may persist for many months postoperatively and negatively impact clinical outcomes associated with various surgical procedures. These facts underscore the need for continued investigation into the potential detrimental effects of regional anesthetic and intraoperative tourniquet use on postoperative quadriceps function, with an outward focus on innovation within the field of postoperative rehabilitation. Neuromuscular stimulation, nutritional supplementation, cryotherapy, blood flow restriction (BFR), and open-chain exercises are all potential additions to postoperative regimens. There is compelling literature to suggest that these modalities are efficacious and may diminish the magnitude and duration of postoperative QD. A clear understanding of QD, with respect to its pathophysiology, should guide perioperative treatment and rehabilitation strategies and influence ongoing rehabilitation-based research and innovation. Moreover, clinicians must appreciate the magnitude of QD's effect on diminished clinical outcomes, risk for re-injury and patients' ability (or inability) to return to pre-injury level of activity following knee joint preservation procedures.
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Affiliation(s)
- Daniel J Cognetti
- Department of Orthopaedic Surgery, San Antonio Military Medical Center, 3551 Roger Brooke Drive, San Antonio, TX, 78234, USA.
| | - Thomas B Lynch
- Department of Orthopaedic Surgery, San Antonio Military Medical Center, 3551 Roger Brooke Drive, San Antonio, TX, 78234, USA
| | - Elizabeth Rich
- Department of Orthopaedic Surgery, Walter Reed National Military Medical Center, Bethesda, MD, 20814, USA
| | - Asheesh Bedi
- Department of Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Aman Dhawan
- Department of Orthopaedics and Rehabilitation, Milton S. Hershey Medical Center, Penn State Health, Hershey, PA, 17033, USA
| | - Andrew J Sheean
- Department of Orthopaedic Surgery, San Antonio Military Medical Center, 3551 Roger Brooke Drive, San Antonio, TX, 78234, USA
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18
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Driban JB, Vincent HK, Trojian TH, Ambrose KR, Baez S, Beresic N, Berkoff DJ, Callahan LF, Cohen B, Franek M, Golightly YM, Harkey M, Kuenze CM, Minnig MC, Mobasheri A, Naylor A, Newman CB, Padua DA, Pietrosimone B, Pinto D, Root H, Salzler M, Schmitt L, Snyder-Mackler L, Taylor JB, Thoma LM, Vincent KR, Wellsandt E, Williams M. Evidence Review for Preventing Osteoarthritis After an Anterior Cruciate Ligament Injury: An Osteoarthritis Action Alliance Consensus Statement. J Athl Train 2023; 58:198-219. [PMID: 37130279 PMCID: PMC10176847 DOI: 10.4085/1062-6050-0504.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
CONTEXT The Osteoarthritis Action Alliance formed a secondary prevention task group to develop a consensus on secondary prevention recommendations to reduce the risk of osteoarthritis after a knee injury. OBJECTIVE Our goal was to provide clinicians with secondary prevention recommendations that are intended to reduce the risk of osteoarthritis after a person has sustained an anterior cruciate ligament injury. Specifically, this manuscript describes our methods, literature reviews, and dissenting opinions to elaborate on the rationale for our recommendations and to identify critical gaps. DESIGN Consensus process. SETTING Virtual video conference calls and online voting. PATIENTS OR OTHER PARTICIPANTS The Secondary Prevention Task Group consisted of 29 members from various clinical backgrounds. MAIN OUTCOME MEASURE(S) The group initially convened online in August 2020 to discuss the target population, goals, and key topics. After a second call, the task group divided into 9 subgroups to draft the recommendations and supportive text for crucial content areas. Twenty-one members completed 2 rounds of voting and revising the recommendations and supportive text between February and April 2021. A virtual meeting was held to review the wording of the recommendations and obtain final votes. We defined consensus as >80% of voting members supporting a proposed recommendation. RESULTS The group achieved consensus on 15 of 16 recommendations. The recommendations address patient education, exercise and rehabilitation, psychological skills training, graded-exposure therapy, cognitive-behavioral counseling (lacked consensus), outcomes to monitor, secondary injury prevention, system-level social support, leveraging technology, and coordinated care models. CONCLUSIONS This consensus statement reflects information synthesized from an interdisciplinary group of experts based on the best available evidence from the literature or personal experience. We hope this document raises awareness among clinicians and researchers to take steps to mitigate the risk of osteoarthritis after an anterior cruciate ligament injury.
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Affiliation(s)
| | - Jeffrey B. Driban
- Division of Rheumatology, Allergy, and Immunology, Tufts Medical Center, Boston, MA
| | - Heather K. Vincent
- UF Health Sports Performance Center, Department of Physical Medicine and Rehabilitation, University of Florida, Gainesville
| | - Thomas H. Trojian
- UF Health Sports Performance Center, Department of Physical Medicine and Rehabilitation, University of Florida, Gainesville
| | | | - Shelby Baez
- Osteoarthritis Action Alliance, Thurston Arthritis Research Center, University of North Carolina at Chapel Hill
| | | | - David J. Berkoff
- Department of Kinesiology, Michigan State University, East Lansing
| | - Leigh F. Callahan
- Osteoarthritis Action Alliance, Thurston Arthritis Research Center, University of North Carolina at Chapel Hill
| | | | - Madison Franek
- University of North Carolina Therapy Services, UNC Wellness Center at Meadowmont, Chapel Hill
| | - Yvonne M. Golightly
- Department of Epidemiology, Thurston Arthritis Research Center, Injury Prevention Research Center, Osteoarthritis Action Alliance, University of North Carolina at Chapel Hill
| | - Matthew Harkey
- Department of Kinesiology, Michigan State University, East Lansing
| | | | - Mary Catherine Minnig
- Department of Epidemiology, Thurston Arthritis Research Center, Injury Prevention Research Center, Osteoarthritis Action Alliance, University of North Carolina at Chapel Hill
| | - Ali Mobasheri
- Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Finland; Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania; Department of Joint Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China; World Health Organization Collaborating Centre for Public Health Aspects of Musculoskeletal Health and Aging, Liege, Belgium
| | | | - Connie B. Newman
- Department of Medicine, Division of Endocrinology, Diabetes & Metabolism, NYU Grossman School of Medicine, New York, NY
| | - Darin A. Padua
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill
| | - Brian Pietrosimone
- Department of Physical Therapy, Congdon School of Health Sciences, High Point University, NC
| | - Daniel Pinto
- Department of Physical Therapy, Marquette University, Milwaukee, WI
| | - Hayley Root
- Department of Physical Therapy, Marquette University, Milwaukee, WI
| | - Matthew Salzler
- Department of Physical Therapy and Athletic Training, Northern Arizona University, Flagstaff
| | - Laura Schmitt
- Division of Physical Therapy, School of Health and Rehabilitation Sciences, Ohio State University, Columbus
| | | | - Jeffrey B. Taylor
- Department of Physical Therapy, Congdon School of Health Sciences, High Point University, NC
| | - Louise M. Thoma
- Division of Physical Therapy, Department of Allied Health Sciences, University of North Carolina at Chapel Hill
| | - Kevin R. Vincent
- UF Health Sports Performance Center, Department of Physical Medicine and Rehabilitation, University of Florida, Gainesville
| | - Elizabeth Wellsandt
- Division of Physical Therapy Education, University of Nebraska Medical Center, Omaha
| | - Monette Williams
- Division of Physical Therapy Education, University of Nebraska Medical Center, Omaha
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19
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Garcia SA, Johnson AK, Brown SR, Washabaugh EP, Krishnan C, Palmieri-Smith RM. Dynamic knee stiffness during walking is increased in individuals with anterior cruciate ligament reconstruction. J Biomech 2023; 146:111400. [PMID: 36469997 DOI: 10.1016/j.jbiomech.2022.111400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 08/22/2022] [Accepted: 11/21/2022] [Indexed: 11/26/2022]
Abstract
Individuals with anterior cruciate ligament (ACL) reconstruction often display abnormal gait mechanics reflective of a "stiff-knee" gait (i.e., reduced knee flexion angles and moments). However, dynamic knee stiffness, which is the dynamic relationship between the position of the knee and the moment acting on it, has not been directly examined during walking in individuals with ACL reconstruction. Here, we aimed to evaluate dynamic knee stiffness in the involved compared to the uninvolved limb during weight-acceptance and mid-stance phases of walking. Twenty-six individuals who underwent ACL reconstruction (Age: 20.2 ± 5.1 yrs., Time post-op: 7.2 ± 0.9 mo.) completed an overground walking assessment using a three-dimensional motion capture system and two force plates. Dynamic knee stiffness (Nm/°) was calculated as the slope of the regression line during weight-acceptance and midstance, obtained by plotting the sagittal plane knee angle versus knee moment. Paired t-tests with Bonferroni corrections were used to compare differences in dynamic stiffness, knee excursions, and moment ranges between limbs during both stance phases. Greater dynamic knee stiffness was found in the involved compared with the uninvolved limb during weight-acceptance and mid-stance (p < 0.01). Knee flexion and extension excursions were reduced in the involved limb during both weight-acceptance and mid-stance, respectively (p < 0.01). Sagittal plane knee moment ranges were not different between limbs during weight-acceptance (p = 0.1); however, the involved limb moment range was reduced relative to the uninvolved limb during mid-stance (p < 0.01). These results indicate that individuals with ACL reconstruction walk with a stiffer knee throughout stance, which may influence knee contact forces and could contribute to the high propensity for post-traumatic knee osteoarthritis development in this population.
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Affiliation(s)
- Steven A Garcia
- School of Kinesiology, University of Michigan, Ann Arbor, MI, United States; Orthopedic Rehabilitation and Biomechanics Laboratory, University of Michigan, Ann Arbor, MI, United States
| | - Alexa K Johnson
- School of Kinesiology, University of Michigan, Ann Arbor, MI, United States; Orthopedic Rehabilitation and Biomechanics Laboratory, University of Michigan, Ann Arbor, MI, United States
| | - Scott R Brown
- Department of Kinesiology, Aquinas College, Grand Rapids, MI, United States; Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, MI, United States
| | - Edward P Washabaugh
- Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, MI, United States; Neuromuscular and Rehabilitation Robotics Laboratory, University of Michigan, Ann Arbor, MI, United States; Department of Biomedical Engineering, Wayne State University, Detroit, MI, United States
| | - Chandramouli Krishnan
- School of Kinesiology, University of Michigan, Ann Arbor, MI, United States; Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, MI, United States; Neuromuscular and Rehabilitation Robotics Laboratory, University of Michigan, Ann Arbor, MI, United States; Robotics Institute, University of Michigan, Ann Arbor, MI, United States.
| | - Riann M Palmieri-Smith
- School of Kinesiology, University of Michigan, Ann Arbor, MI, United States; Orthopedic Rehabilitation and Biomechanics Laboratory, University of Michigan, Ann Arbor, MI, United States; Department of Orthopaedic Surgery, Michigan Medicine, Ann Arbor, MI, United States.
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20
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Ito N, Capin JJ, Khandha A, Buchanan TS, Silbernagel KG, Snyder-Mackler L. Bone-Patellar Tendon-Bone Autograft Harvest Prolongs Extensor Latency during Gait 2 yr after ACLR. Med Sci Sports Exerc 2022; 54:2109-2117. [PMID: 35941514 PMCID: PMC9669131 DOI: 10.1249/mss.0000000000003009] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE Bone-patellar tendon-bone (BPTB) graft harvest for anterior cruciate ligament reconstruction alters patellar tendon properties, which inflict poor quadriceps neuromuscular function. BPTB autografts are associated with higher rates of posttraumatic osteoarthritis, which in turn is associated with pathological gait. The purpose of this study was to investigate the latency between the time of peak quadriceps activity and the peak knee flexion moment during gait, between those with BPTB grafts ( n = 23) and other graft types (hamstring autograft or allografts, n = 54), 5 ± 2 months and 2 yr (25 ± 3 months) after anterior cruciate ligament reconstruction. We hypothesized that longer latencies would be observed in the BPTB graft group in the involved limb. We expected latencies to shorten over time. METHODS Knee moments and quadriceps EMG were collected during gait, and vastus medialis, vastus lateralis, rectus femoris (RF), and quadriceps latencies were calculated. Linear mixed-effects models were used to compare latencies between graft types and over the two time points. RESULTS The main effects of graft type were observed for vastus medialis ( P = 0.005) and quadriceps ( P = 0.033) latencies with the BPTB graft group demonstrating longer latencies. No main effects of graft type were observed for vastus lateralis ( P = 0.051) and RF ( P = 0.080) latencies. Main effects of time were observed for RF latency ( P = 0.022). CONCLUSIONS Our hypothesis that the BPTB graft group would demonstrate longer extensor latency was supported. Contrary to our second hypothesis, however, latency only improved in RF and regardless of graft type, indicating that neuromuscular deficits associated with BPTB grafts may persist 2 yr after surgery. Persistent deficits may be mediated by changes in the patellar tendon's mechanical properties. Graft-specific rehabilitation may be warranted to address the long-term neuromechanical deficits that are present after BPTB graft harvest.
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Affiliation(s)
- Naoaki Ito
- Biomechanics and Movement Science Program, University of Delaware, Newark, DE
- Department of Physical Therapy, University of Delaware, Newark, DE
| | - Jacob J. Capin
- Department of Physical Therapy, Marquette University, Milwaukee, WI
| | - Ashutosh Khandha
- Department of Biomedical Engineering, University of Delaware, Newark, DE
| | - Thomas S. Buchanan
- Biomechanics and Movement Science Program, University of Delaware, Newark, DE
- Department of Biomedical Engineering, University of Delaware, Newark, DE
- Department of Mechanical Engineering, University of Delaware, Newark, DE
| | - Karin Grävare Silbernagel
- Biomechanics and Movement Science Program, University of Delaware, Newark, DE
- Department of Physical Therapy, University of Delaware, Newark, DE
| | - Lynn Snyder-Mackler
- Biomechanics and Movement Science Program, University of Delaware, Newark, DE
- Department of Physical Therapy, University of Delaware, Newark, DE
- Department of Biomedical Engineering, University of Delaware, Newark, DE
- Department of Mechanical Engineering, University of Delaware, Newark, DE
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21
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Pamukoff DN, Holmes SC, Garcia SA, Vakula MN, Shumski EJ, Moffit TJ. Influence of body mass index and anterior cruciate ligament reconstruction on gait biomechanics. J Orthop Res 2022; 41:994-1003. [PMID: 36205181 DOI: 10.1002/jor.25451] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 09/06/2022] [Accepted: 10/01/2022] [Indexed: 02/04/2023]
Abstract
Body mass index (BMI) and history of anterior cruciate ligament reconstruction (ACLR) independently influence gait biomechanics and knee osteoarthritis risk, but the interaction between these factors is unclear. The purpose of this study was to compare gait biomechanics between individuals with and without ACLR, and with and without overweight/obesity. We examined 104 individuals divided into four groups: with and without ACLR, and with low or high BMI (n = 26 per group). Three-dimensional gait biomechanics were evaluated at preferred speed. The peak vertical ground reaction force, knee flexion angle and excursion, external knee flexion moment, and external knee adduction moment were extracted for analysis. Gait features were compared between groups using 2 (with and without overweight/obesity) × 2 (with and without ACLR) analysis of variance. Primary findings indicated that those with ACLR and high BMI had a larger external knee adduction moment compared with those with low BMI and with (p = 0.004) and without ACLR (p = 0.005), and compared with those without ACLR and high BMI (p = 0.001). The main effects of ACLR and BMI group were found for the knee flexion moment, and those with ACLR and with high BMI had lower knee flexion moments compared with those without ACLR (p = 0.031) and with low BMI (p = 0.021), respectively. Data suggest that individuals with ACLR and high BMI may benefit from additional intervention targeting the knee adduction moment. Moreover, lower external knee flexion moments in those with high BMI and ACLR were consistent, but high BMI did not exacerbate deficits in the knee flexion moment in those with ACLR. [Correction added on 9 November 2022, after first online publication: In the preceding sentence, for clarity, the words "reductions in the lower" was removed from the initial sentence to read "Moreover, lower external knee flexion moments".].
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Affiliation(s)
- Derek N Pamukoff
- School of Kinesiology, Western University, London, Ontario, Canada
| | - Skylar C Holmes
- Department of Kinesiology, University of Massachusetts, Amherst, Massachusetts, USA
| | - Steven A Garcia
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Michael N Vakula
- Department of Kinesiology & Health Science, Utah State University, Logan, Utah, USA
| | - Eric J Shumski
- Department of Kinesiology, University of Georgia, Athens, Georgia, USA
| | - Tyler J Moffit
- Department of Kinesiology, California State University, Bakersfield, California, USA
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22
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Differences in the course of rehabilitation and outcomes for publicly insured pediatric patients after anterior cruciate ligament reconstruction. Phys Ther Sport 2022; 58:52-57. [PMID: 36174372 DOI: 10.1016/j.ptsp.2022.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 11/21/2022]
Abstract
OBJECTIVE Examine the effect of insurance type on physical therapy (PT) utilization and outcomes within pediatric and adolescent patients after anterior cruciate ligament reconstruction. DESIGN Multicenter retrospective cohort study. METHODS PT visits and functional hop test performance were extracted into a shared database. The average number of PT visits per week was assessed overall and by time period. Independent samples t-test examined the effect of insurance on PT utilization and the effect of insurance status on the odds of passing single-legged hop tests was assessed using multivariable logistic regression. RESULTS A total of 281 patients (15.7 ± 1.9, 42% female) were included in this analysis. Of these, 128 (45%) had public insurance. Publicly insured patients experienced a longer delay from surgery to hop test (8.3vs7.7 months, p = 0.009), attended overall fewer PT visits per week (0.92vs1.04, p = 0.005), with most of the decreased frequency occurring between weeks 7-24. Insurance status had a significant effect on the odds of passing the single leg hop test (2.72; 95%CI, 1.27-5.81). CONCLUSION Publicly insured patients average a lower number of weekly PT visits, experienced a longer delay from surgery to hop testing and were 2.7 times less likely to pass the single leg hop for distance test.
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23
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Quadriceps Muscle Action and Association With Knee Joint Biomechanics in Individuals with Anterior Cruciate Ligament Reconstruction. J Appl Biomech 2022; 38:328-335. [PMID: 36007878 DOI: 10.1123/jab.2021-0381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 06/09/2022] [Accepted: 07/12/2022] [Indexed: 11/18/2022]
Abstract
Insufficient quadriceps force production and altered knee joint biomechanics after anterior cruciate ligament reconstruction (ACLR) may contribute to a heightened risk of osteoarthritis. Quadriceps muscle lengthening dynamics affect force production and knee joint loading; however, no study to our knowledge has quantified in vivo quadriceps dynamics during walking in individuals with ACLR or examined correlations with joint biomechanics. Our purpose was to quantify bilateral vastus lateralis (VL) fascicle length change and the association thereof with gait biomechanics during weight acceptance in individuals with ACLR. The authors hypothesized that ACLR limbs would exhibit more fascicle lengthening than contralateral limbs. The authors also hypothesized that ACLR limbs would exhibit positive correlations between VL fascicle lengthening and knee joint biomechanics during weight acceptance in walking. The authors quantified VL contractile dynamics via cine B-mode ultrasound imaging in 18 individuals with ACLR walking on an instrumented treadmill. In partial support of our hypothesis, ACLR limb VL fascicles activated without length change on average during weight acceptance while fascicle length on the contralateral limb decreased on average. The authors found a positive association between fascicle lengthening and increase in knee extensor moments in both limbs. Our results suggest that examining quadriceps muscle dynamics may elucidate underlying mechanisms relevant to osteoarthritis.
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24
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Wengle L, Migliorini F, Leroux T, Chahal J, Theodoropoulos J, Betsch M. The Effects of Blood Flow Restriction in Patients Undergoing Knee Surgery: A Systematic Review and Meta-analysis. Am J Sports Med 2022; 50:2824-2833. [PMID: 34406084 PMCID: PMC9354069 DOI: 10.1177/03635465211027296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Blood flow restriction (BFR) training has been shown to have beneficial effects in reducing quadriceps muscle atrophy and improving strength in patients with various knee pathologies. Furthermore, the effectiveness of BFR training in patients undergoing knee surgery has been investigated to determine if its use can improve clinical outcomes. PURPOSE/HYPOTHESIS The purpose of this study was to conduct a systematic review and meta-analysis to examine the effectiveness of BFR training in patients undergoing knee surgery. We hypothesized that BFR, before or after surgery, would improve clinical outcomes as well as muscle strength and volume. STUDY DESIGN Systematic review and meta-analysis; Level of evidence, 4. METHODS This systematic review and meta-analysis of peer-reviewed literature was conducted using PubMed, Embase, and Cochrane databases from 1980 to present. Search results were limited to those assessing BFR training in patients undergoing knee surgery published in a scientific peer-reviewed journal in English. Selected studies subsequently underwent data extraction, methodological quality assessment, and data analysis. RESULTS Eleven studies were eligible, including anterior cruciate ligament reconstruction (n = 10) and knee arthroscopy (n = 1). Two studies specifically assessed BFR use in the preoperative time frame. For the meta-analysis, including 4 studies, the primary outcome variables included the cross-sectional area of the quadratus femoris muscle group assessed with magnetic resonance imaging or ultrasonography, and patient-reported outcome measure scores. The results demonstrated that BFR use in the postoperative time period can lead to a significant improvement in the cross-sectional area when quantifying muscle atrophy. However, there were no significant differences found for patient-reported outcome measures between the included studies. It should be noted that 4 of the included papers in this review reported increases in clinical strength when using BFR in the postoperative setting. Last, preoperative BFR training did not show any significant clinical benefit between the 2 studies. CONCLUSION This is the first systematic review and meta-analysis to study the effects of BFR in patients undergoing knee surgery. The results of this analysis show that BFR in the postoperative period after knee surgery can improve quadriceps muscle bulk compared with a control group. However, future research should examine the effects of preconditioning with BFR before surgery. Lastly, BFR protocols need to be further investigated to determine which provide the best patient outcomes. This will help standardize this type of treatment modality for future studies.
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Affiliation(s)
- Lawrence Wengle
- University of Toronto Orthopaedic Sports Medicine Program (UTOSM), Women’s College Hospital, Toronto, Ontario, Canada,Lawrence Wengle, MD, Mount Sinai Hospital, Dovigi Orthopaedic Sports Medicine Clinic, University of Toronto Orthopaedic Sports Medicine (UTOSM), 600 University Avenue, Suite 20-440, Toronto, ON M5G 1X1, Canada ()
| | - Filippo Migliorini
- Department of Orthopedics, University Clinic Aachen, RWTH Aachen University Clinic, Aachen, Germany
| | - Timothy Leroux
- University of Toronto Orthopaedic Sports Medicine Program (UTOSM), Women’s College Hospital, Toronto, Ontario, Canada,The Schroder Arthritis Institute, University Health Network, Toronto, Ontario, Canada
| | - Jaskarndip Chahal
- University of Toronto Orthopaedic Sports Medicine Program (UTOSM), Women’s College Hospital, Toronto, Ontario, Canada
| | - John Theodoropoulos
- University of Toronto Orthopaedic Sports Medicine Program (UTOSM), Women’s College Hospital, Toronto, Ontario, Canada
| | - Marcel Betsch
- University of Toronto Orthopaedic Sports Medicine Program (UTOSM), Women’s College Hospital, Toronto, Ontario, Canada,Department of Orthopaedics and Trauma Surgery, University Medical Center Mannheim of the University Heidelberg, Mannheim, Germany
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25
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Lisee C, Davis-Wilson H, Evans-Pickett A, Horton WZ, Blackburn T, Franz JR, Thoma L, Spang JT, Pietrosimone B. Linking Gait Biomechanics and Daily Steps After ACL Reconstruction. Med Sci Sports Exerc 2022; 54:709-716. [PMID: 35072659 PMCID: PMC9255696 DOI: 10.1249/mss.0000000000002860] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE Aberrant biomechanics and altered loading frequency are associated with poor knee joint health in osteoarthritis development. After anterior cruciate ligament reconstruction (ACLR), individuals demonstrate underloading (lesser vertical ground reaction force (vGRF)) with stiffened knee gait biomechanics (lesser knee extension moment (KEM) and knee flexion angle) and take fewer daily steps as early as 6 months after surgery. The purpose of this cross-sectional laboratory study is to compare gait biomechanics throughout stance between individuals 6-12 months after ACLR who take the lowest, moderate, and highest daily steps. METHODS Individuals with primary, unilateral history of ACLR between the ages of 16 and 35 yr were included (n = 36, 47% females; age, 21 ± 5 yr; months since ACLR, 8 ± 2). Barefoot gait biomechanics of vGRF (body weight), KEM (body weight × height), and knee flexion angle during stance were collected and time normalized. Average daily steps were collected via a waist-mounted accelerometer in free-living settings over 7 d. Participants were separated into tertiles based on lowest daily steps (3326-6042 daily steps), moderate (6043-8198 daily steps), and highest (8199-12,680 daily steps). Biomechanical outcomes of the ACLR limb during stance were compared between daily step groups using functional waveform gait analyses. RESULTS There were no significant differences in sex, body mass index, age, or gait speed between daily step groups. Individuals with the lowest daily steps walk with lesser vGRF and lesser KEM during weight acceptance, and lesser knee flexion angle throughout stance in the ACLR limb compared with individuals with highest and moderate daily steps. CONCLUSIONS After ACLR, individuals who take the fewest daily steps also walk with lesser vGRF during weight acceptance and a stiffened knee strategy throughout stance. These results highlight complex interactions between joint loading parameters after ACLR.
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Affiliation(s)
- Caroline Lisee
- MOTION Science Institute, Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, NC
| | - Hope Davis-Wilson
- Department of Physical Medicine and Rehabilitation, University of Colorado, Aurora, CO
| | - Alyssa Evans-Pickett
- MOTION Science Institute, Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, NC
- Department of Allied Health Sciences, University of North Carolina at Chapel Hill, NC
| | - W. Zachary Horton
- Department of Statistics, University of California Santa Cruz, Santa Cruz, California
| | - Troy Blackburn
- MOTION Science Institute, Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, NC
- Department of Allied Health Sciences, University of North Carolina at Chapel Hill, NC
- Department of Orthopaedics, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Jason R. Franz
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC
| | - Louise Thoma
- Department of Allied Health Sciences, University of North Carolina at Chapel Hill, NC
| | - Jeffrey T. Spang
- Department of Orthopaedics, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Brian Pietrosimone
- MOTION Science Institute, Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, NC
- Department of Allied Health Sciences, University of North Carolina at Chapel Hill, NC
- Department of Orthopaedics, University of North Carolina at Chapel Hill, Chapel Hill, NC
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26
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Banger MS, Doonan J, Jones BG, MacLean AD, Rowe PJ, Blyth MJG. Are there functional biomechanical differences in robotic arm-assisted bi-unicompartmental knee arthroplasty compared with conventional total knee arthroplasty? A prospective, randomized controlled trial. Bone Joint J 2022; 104-B:433-443. [PMID: 35360949 DOI: 10.1302/0301-620x.104b4.bjj-2021-0837.r1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AIMS The aim of this study was to compare any differences in the primary outcome (biphasic flexion knee moment during gait) of robotic arm-assisted bi-unicompartmental knee arthroplasty (bi-UKA) with conventional mechanically aligned total knee arthroplasty (TKA) at one year post-surgery. METHODS A total of 76 patients (34 bi-UKA and 42 TKA patients) were analyzed in a prospective, single-centre, randomized controlled trial. Flat ground shod gait analysis was performed preoperatively and one year postoperatively. Knee flexion moment was calculated from motion capture markers and force plates. The same setup determined proprioception outcomes during a joint position sense test and one-leg standing. Surgery allocation, surgeon, and secondary outcomes were analyzed for prediction of the primary outcome from a binary regression model. RESULTS Both interventions were shown to be effective treatment options, with no significant differences shown between interventions for the primary outcome of this study (18/35 (51.4%) biphasic TKA patients vs 20/31 (64.5%) biphasic bi-UKA patients; p = 0.558). All outcomes were compared to an age-matched, healthy cohort that outperformed both groups, indicating residual deficits exists following surgery. Logistic regression analysis of primary outcome with secondary outcomes indicated that the most significant predictor of postoperative biphasic knee moments was preoperative knee moment profile and trochlear degradation (Outerbridge) (R2 = 0.381; p = 0.002, p = 0.046). A separate regression of alignment against primary outcome indicated significant bi-UKA femoral and tibial axial alignment (R2 = 0.352; p = 0.029), and TKA femoral sagittal alignment (R2 = 0.252; p = 0.016). The bi-UKA group showed a significant increased ability in the proprioceptive joint position test, but no difference was found in more dynamic testing of proprioception. CONCLUSION Robotic arm-assisted bi-UKA demonstrated equivalence to TKA in achieving a biphasic gait pattern after surgery for osteoarthritis of the knee. Both treatments are successful at improving gait, but both leave the patients with a functional limitation that is not present in healthy age-matched controls. Cite this article: Bone Joint J 2022;103-B(4):433-443.
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Affiliation(s)
- Matthew S Banger
- Department of Biomedical Engineering, University of Strathclyde, Glasgow, UK
| | - James Doonan
- Department of Trauma and Orthopaedics, Glasgow Royal Infirmary, Glasgow, UK
| | - Bryn G Jones
- Department of Trauma and Orthopaedics, Glasgow Royal Infirmary, Glasgow, UK
| | - Angus D MacLean
- Department of Trauma and Orthopaedics, Glasgow Royal Infirmary, Glasgow, UK
| | - Philip J Rowe
- Department of Biomedical Engineering, University of Strathclyde, Glasgow, UK
| | - Mark J G Blyth
- Department of Trauma and Orthopaedics, Glasgow Royal Infirmary, Glasgow, UK
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27
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Arthrogenic Muscle Inhibition Following Anterior Cruciate Ligament Injury. J Sport Rehabil 2022; 31:694-706. [PMID: 35168201 DOI: 10.1123/jsr.2021-0128] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 10/06/2021] [Accepted: 10/28/2021] [Indexed: 11/18/2022]
Abstract
Arthrogenic muscle inhibition (AMI) is a common impairment in individuals who sustain an anterior cruciate ligament (ACL) injury. The AMI causes decreased muscle activation, which impairs muscle strength, leading to aberrant movement biomechanics. The AMI is often resistant to traditional rehabilitation techniques, which leads to persistent neuromuscular deficits following ACL reconstruction. To better treat AMI following ACL injury and ACL reconstruction, it is important to understand the specific neural pathways involved in AMI pathogenesis, as well as the changes in muscle function that may impact movement biomechanics and long-term structural alterations to joint tissue. Overall, AMI is a critical factor that limits optimal rehabilitation outcomes following ACL injury and ACL reconstruction. This review discusses the current understanding of the: (1) neural pathways involved in the AMI pathogenesis following ACL injury; (2) consequence of AMI on muscle function, joint biomechanics, and patient function; and (3) development of posttraumatic osteoarthritis. Finally, the authors review the evidence for interventions specifically used to target AMI following ACL injury.
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28
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Garcia SA, Rodriguez KM, Brown SR, Palmieri-Smith RM, Krishnan C. Estimates of voluntary activation in individuals with anterior cruciate ligament reconstruction: Effects of type of stimulator, number of stimuli, and quantification technique. JOURNAL OF SPORT AND HEALTH SCIENCE 2022; 11:85-93. [PMID: 32692315 PMCID: PMC8847978 DOI: 10.1016/j.jshs.2019.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 10/15/2019] [Accepted: 11/12/2019] [Indexed: 06/11/2023]
Abstract
BACKGROUND Accurate quantification of voluntary activation is important for understanding the extent of quadriceps dysfunction in individuals with anterior cruciate ligament reconstruction (ACLR). Voluntary activation has been quantified using both percent activation derived from the interpolated twitch technique and central activation ratio (CAR) derived from the burst superimposition technique, as well as by using different types of electrical stimulators and pulse train conditions. However, it is unclear how these parameters affect voluntary activation estimates in individuals with ACLR. This study was performed to fill this important knowledge gap in the anterior cruciate ligament literature. METHODS Quadriceps strength and voluntary activation were examined in 18 ACLR participants (12 quadriceps/patellar tendon graft, 6 hamstring tendon graft; time since ACLR: 1.06 ± 0.82 years, mean ± SD) at 90° of knee flexion using 2 stimulators (Digitimer and Grass) and pulse train conditions (3-pulse and 10-pulse). Voluntary activation was quantified by calculating both CAR and percent activation. RESULTS Results indicated that voluntary activation was significantly overestimated by CAR when compared with percent activation (p < 0.001). Voluntary activation estimates were not affected by pulse train conditions when using percent activation; however, 3-pulse stimuli resulted in greater overestimation than 10-pulse stimuli when using CAR (p = 0.003). Voluntary activation did not differ between stimulators (p > 0.05); however, the Digitimer evoked greater torque at rest than the Grass (p < 0.001). CONCLUSION These results indicate that percent activation derived from the interpolated twitch technique provides superior estimates of voluntary activation than CAR derived from burst superimposition and is less affected by pulse train conditions or stimulators in individuals with ACLR.
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Affiliation(s)
- Steven A Garcia
- School of Kinesiology, University of Michigan, Ann Arbor, MI 48109, USA
| | | | - Scott R Brown
- Neuromuscular and Rehabilitation Robotics Laboratory (NeuRRo Lab), Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, MI 48108, USA
| | - Riann M Palmieri-Smith
- School of Kinesiology, University of Michigan, Ann Arbor, MI 48109, USA; Department of Orthopaedic Surgery, Michigan Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - Chandramouli Krishnan
- School of Kinesiology, University of Michigan, Ann Arbor, MI 48109, USA; Neuromuscular and Rehabilitation Robotics Laboratory (NeuRRo Lab), Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, MI 48108, USA; Robotics Institute, University of Michigan, Ann Arbor, MI 48109, USA.
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29
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Brunst C, Ithurburn M, Zbojniewicz A, Paterno MV, Schmitt LC. Return-to-sport quadriceps strength symmetry impacts 5-year cartilage integrity after anterior cruciate ligament reconstruction: A preliminary analysis. J Orthop Res 2022; 40:285-294. [PMID: 33834527 PMCID: PMC8724934 DOI: 10.1002/jor.25029] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/12/2021] [Accepted: 03/10/2021] [Indexed: 02/04/2023]
Abstract
Quadriceps femoris strength asymmetry at the time of return to sports participation after anterior cruciate ligament (ACL) reconstruction contributes to worse function and asymmetric landing patterns, but the impact on longitudinal outcomes is not known. This study determined if young athletes after ACL reconstruction with quadriceps femoris strength asymmetry at a return to sports clearance would demonstrate markers of knee cartilage degeneration 5 years later compared to those with symmetric quadriceps femoris strength at return to sports. Participants (n = 27) were enrolled at the time of medical clearance for sports participation (baseline testing) and followed for 5 years. At baseline, quadriceps femoris strength was measured bilaterally and a limb symmetry index was used to divide the cohort into two groups: return to sport clearance with high quadriceps femoris strength (RTS-HQ; limb symmetry index ≥ 90%) and return to sport clearance with low quadriceps femoris strength (RTS-LQ; limb symmetry index < 85%). At 5 years post-baseline, quantitative magnetic resonance imaging (T2 relaxation times (ms): involved knee medial/lateral femoral condyle and tibial plateau) data were collected. Group differences were evaluated with independent samples t tests. At 5 years post-return to sports, the RTS-LQ strength group (n = 14) demonstrated elevated T2 relaxation times at the anterior region of the lateral femoral condyle compared to the RTS-HQ strength group (n = 13). Clinical Significance: Just over 50% of this cohort was cleared for sports participation with involved limb quadriceps femoris strength deficits that may contribute to early markers of knee cartilage degeneration within the subsequent 5 years.
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Affiliation(s)
- Caroline Brunst
- OSU Sports Medicine Research Institute, Ohio State University Wexner Medical Center, Columbus, OH
| | - Matthew Ithurburn
- Department of Physical Therapy and Center for Exercise Medicine, University of Alabama at Birmingham, Birmingham, AL
| | | | - Mark V. Paterno
- Division of Sports Medicine and Division of Occupational Therapy and Physical Therapy, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH,Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, OH
| | - Laura C. Schmitt
- OSU Sports Medicine Research Institute, Ohio State University Wexner Medical Center, Columbus, OH,Division of Physical Therapy, School of Health and Rehabilitation Sciences, Ohio State University, Columbus, OH
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30
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Kinetic measurement system use in individuals following anterior cruciate ligament reconstruction: a scoping review of methodological approaches. J Exp Orthop 2021; 8:81. [PMID: 34568996 PMCID: PMC8473525 DOI: 10.1186/s40634-021-00397-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 08/27/2021] [Indexed: 12/31/2022] Open
Abstract
Purpose Our primary objectives were to (1) describe current approaches for kinetic measurements in individuals following anterior cruciate ligament reconstruction (ACLR) and (2) suggest considerations for methodological reporting. Secondarily, we explored the relationship between kinetic measurement system findings and patient-reported outcome measures (PROMs). Methods We followed the PRISMA extension for scoping reviews and Arksey and O’Malley’s 6-stage framework. Seven electronic databases were systematically searched from inception to June 2020. Original research papers reporting parameters measured by kinetic measurement systems in individuals at least 6-months post primary ACLR were included. Results In 158 included studies, 7 kinetic measurement systems (force plates, balance platforms, pressure mats, force-measuring treadmills, Wii balance boards, contact mats connected to jump systems, and single-sensor insoles) were identified 4 main movement categories (landing/jumping, standing balance, gait, and other functional tasks). Substantial heterogeneity was noted in the methods used and outcomes assessed; this review highlighted common methodological reporting gaps for essential items related to movement tasks, kinetic system features, justification and operationalization of selected outcome parameters, participant preparation, and testing protocol details. Accordingly, we suggest considerations for methodological reporting in future research. Only 6 studies included PROMs with inconsistency in the reported parameters and/or PROMs. Conclusion Clear and accurate reporting is vital to facilitate cross-study comparisons and improve the clinical application of kinetic measurement systems after ACLR. Based on the current evidence, we suggest methodological considerations to guide reporting in future research. Future studies are needed to examine potential correlations between kinetic parameters and PROMs. Supplementary Information The online version contains supplementary material available at 10.1186/s40634-021-00397-0.
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Nakao Y, Uchiyama Y, Honda K, Hasegawa Y, Nanto T, Jomoto W, Domen K. Tongue pressure waveform analysis for ascertaining the influence of tongue muscle composition on articulation. J Oral Rehabil 2021; 48:1347-1353. [PMID: 34491591 DOI: 10.1111/joor.13255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 08/19/2021] [Accepted: 09/01/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Rate force development is associated with performance and muscle composition in whole-body muscle. Although rate force development on tongue muscle can be examined using tongue pressure waveform, there have been only few investigations on this topic. OBJECTIVES This study's main purpose was to investigate the reliability of tongue pressure waveform analysis and its relationship with articulation and tongue muscle composition. In addition, we also investigated the association between tongue muscle composition and articulation. METHODS Forty-five community-dwelling individuals aged >20 years participated. We analysed tongue pressure waveform, including maximum tongue pressure (MTP), time to peak, mean rate of tongue force development and peak rate of tongue force development (PRTFD). We also assessed oral diadochokinesis. Magnetic resonance imaging of the tongue provided data on tongue muscle composition, including tongue volume, fat mass, lean muscle mass and fat percentage. We evaluated the reliability of tongue pressure waveform analysis. Moreover, we examined the coefficients between tongue pressure waveform analysis, oral diadochokinesis and tongue composition. RESULTS We detected a high reliability of MTP and PRTFD. MTP and PRTFD were significantly correlated with tongue muscle composition. MTP was not significantly correlated with oral diadochokinesis. PRTFD was significantly positively correlated with oral diadochokinesis. Tongue fat mass and fat percentage were negatively correlated with oral diadochokinesis of /ta/ and /ka/. CONCLUSIONS Peak rate of tongue force development is a highly reliable method for tongue pressure analysis and is useful for elucidating the functional importance of tongue muscle function on articulation. We speculated that fatty infiltration of the tongue adversely affects articulation.
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Affiliation(s)
- Yuta Nakao
- Department of Rehabilitation, Hyogo College of Medicine College Hospital, Nishinomiya, Japan.,Department of Rehabilitation Therapy, Kurashiki Central Hospital, Kurashiki, Japan
| | - Yuki Uchiyama
- Department of Rehabilitation Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Kosuke Honda
- Department of Dentistry and Oral Surgery, Hyogo College of Medicine, Nishinomiya, Japan
| | - Yoko Hasegawa
- Department of Dentistry and Oral Surgery, Hyogo College of Medicine, Nishinomiya, Japan.,Division of Comprehensive Prosthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Tomoki Nanto
- Department of Rehabilitation, Hyogo College of Medicine College Hospital, Nishinomiya, Japan
| | - Wataru Jomoto
- Department of Radiological Technology, Hyogo College of Medicine College Hospital, Nishinomiya, Japan
| | - Kazuhisa Domen
- Department of Rehabilitation Medicine, Hyogo College of Medicine, Nishinomiya, Japan
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Kim S, Park J. Patients with chronic unilateral anterior knee pain experience bilateral deficits in quadriceps function and lower quarter flexibility: a cross-sectional study. Physiother Theory Pract 2021; 38:2531-2543. [PMID: 34253159 DOI: 10.1080/09593985.2021.1946871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Background: Little is known about how chronic unilateral anterior knee pain (AKP) affects bilateral quadriceps function and lower quarter flexibility. Objective: To determine if patients with chronic unilateral AKP present bilateral deficits in quadriceps function and lower quarter flexibility. Methods: Twenty-two patients with chronic unilateral AKP (pain duration: 48.6 months) and 22 matched healthy controls were evaluated. Pain perception and functional outcomes were obtained. Knee joint and thigh circumferences, quadriceps subcutaneous tissue thickness and function (i.e. maximal and explosive strength, activation, and endurance), and lower quarter flexibility (i.e. hamstrings and iliopsoas/rectus femoris muscle) in both legs were compared across conditions. Results: Knee joint and thigh circumferences, and quadriceps subcutaneous tissue thickness were not different between conditions (P ≥ .39). Compared with matched healthy controls, patients with chronic unilateral AKP showed: 1) greater pain perception (0.0 versus 4.4 cm, P < .0001); 2) a lower score for functional outcomes (79.6 versus 53.9, P < .0001); 3) less bilateral quadriceps maximal (3.5 versus 2.8 Nm/kg, P < .0001) and explosive (10.8 versus 8.7 Nm/kg/s, P = .01) strength, activation (0.95 versus 0.83, P < .0001), and endurance (1.66 versus 1.52 Nm/kg, P = .02); and 4) less bilateral hamstrings (86.8 versus 72.6°, P = .002) and iliopsoas/rectus femoris (11.6 versus 7.8°, P < .05) flexibility. Conclusion: Patients with chronic unilateral AKP (without knee joint effusion or quadriceps muscle atrophy) appear to have bilateral deficits in quadriceps function and lower quarter flexibility, which should be addressed with pain reduction.
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Affiliation(s)
- Sungwan Kim
- Department of Physical Education, Athletic Training Laboratory, Kyung Hee University, Yongin, Korea
| | - Jihong Park
- Department of Sports Medicine, Athletic Training Laboratory, Kyung Hee University, Yongin, Korea
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Hannon JP, Wang-Price S, Goto S, Singleton S, Dietrich L, Bothwell J, Bush C, Garrison C. Twelve-Week Quadriceps Strength as A Predictor of Quadriceps Strength At Time Of Return To Sport Testing Following Bone-Patellar Tendon-Bone Autograft Anterior Cruciate Ligament Reconstruction. Int J Sports Phys Ther 2021; 16:681-688. [PMID: 34123520 PMCID: PMC8169016 DOI: 10.26603/001c.23421] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 01/05/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Restoration of quadriceps strength following anterior cruciate ligament reconstruction (ACL-R) continues to challenge both patients and clinicians. Failure to adequately restore quadriceps strength has been linked to decreased patients' self-reported outcomes and an increased risk for re-injury. Early identification of quadriceps strength deficits may assist in tailoring early interventions to better address impairments. PURPOSE The purpose of this study was to assess the relationship between early (12 weeks following ACL-R) isokinetic peak torque and isokinetic peak torque at time of return to sport (RTS) testing. STUDY DESIGN Cohort Study. METHODS A total of 120 participants (males = 55; females =65) were enrolled in the study (age = 16.1±1.4 yrs; height = 1.72±10.5 m; mass = 70.7±16.3 kg). All participants were level 1 or 2 cutting and pivoting sport athletes who underwent a primary bone-patellar tendon-bone autograft ACL-R. Participants were tested at two time points: 12 weeks following surgery and again at time of RTS testing. A linear regression model was carried out to investigate the relationship between age, sex, and isokinetic peak torque at 12 weeks following ACL-R and isokinetic peak torque at time of RTS testing. RESULTS When 12-week isokinetic peak torque was entered first for the hierarchy regression analysis, this factor was predictive of the peak torque at the time of RTS testing, F(1, 118) = 105.6, p < 0.001, R 2 = 0.472, indicating that the 12-week quadriceps strength accounted for 47% of the variance in the quadriceps strength at the time of RTS testing. When age and sex were added in the regression analysis, both factors only added 0.8% of variance for the quadriceps strength at the time of RTS testing. CONCLUSION Isokinetic peak torque at 12 weeks following surgery was shown to be a significantly strong predictor (47%) for isokinetic quadriceps strength recovery at time of RTS. This finding underscores the importance of early restoration of quadriceps strength and that while non-modifiable factors such as sex and age are important, early restoration of quadriceps strength most strongly influences late stage quadriceps strength. LEVEL OF EVIDENCE 3.
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de Britto MA, Lemos AL, Dos Santos CS, Maroneze BM, Stoelben KJ, Carpes FP. Effects of a rebound shoe to reduce impact forces in jump-landing tasks. J Bodyw Mov Ther 2021; 26:77-83. [PMID: 33992301 DOI: 10.1016/j.jbmt.2020.12.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/01/2020] [Accepted: 12/19/2020] [Indexed: 10/22/2022]
Abstract
OBJECTIVES Impact forces are risk factors for injuries during jump-landing tasks. Rebound shoes could reduce impact forces and show potential applications in training and rehabilitation programs. Here, we determine the capacity of a rebound shoe in attenuating impact forces during different motor tasks involving foot landing. DESIGN Crossover laboratory research design. SETTINGS Women not trained for jump-landing tasks performed different exercises while the vertical ground reaction force impact peak, time to peak, and asymmetries were determined. They were wearing a commercial rebound shoe and a control running shoe. Paired t-tests were used to compare the shoes and asymmetries. PARTICIPANTS Fifteen physically active women (average age of 23 years old, height of 1.64 m, and body mass of 63 kg). MAIN OUTCOME MEASURES Ground reaction forces. RESULTS The rebound shoe reduced the impact peak force and elicited slight asymmetries between the legs. The rebound shoe also showed a longer time to peak. CONCLUSIONS The rebound shoe tested reduced impact forces during jump-landing tasks, which is a potential application in training sessions and rehabilitation programs, requiring lower impact forces to the lower extremity. The effects of long-term use of these shoes still need to be investigated.
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Affiliation(s)
- Morgana A de Britto
- Applied Neuromechanics Research Group, Federal University of Pampa, Uruguaiana, RS, Brazil
| | - Andressa L Lemos
- Applied Neuromechanics Research Group, Federal University of Pampa, Uruguaiana, RS, Brazil
| | | | - Bruno M Maroneze
- Applied Neuromechanics Research Group, Federal University of Pampa, Uruguaiana, RS, Brazil
| | - Karine Jv Stoelben
- Applied Neuromechanics Research Group, Federal University of Pampa, Uruguaiana, RS, Brazil
| | - Felipe P Carpes
- Applied Neuromechanics Research Group, Federal University of Pampa, Uruguaiana, RS, Brazil.
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Blackburn T, Padua DA, Pietrosimone B, Schwartz TA, Spang JT, Goodwin JS, Dewig DR, Johnston CD. Vibration improves gait biomechanics linked to posttraumatic knee osteoarthritis following anterior cruciate ligament injury. J Orthop Res 2021; 39:1113-1122. [PMID: 32757272 DOI: 10.1002/jor.24821] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 06/24/2020] [Accepted: 07/13/2020] [Indexed: 02/04/2023]
Abstract
Anterior cruciate ligament reconstruction (ACLR) incurs a high risk of posttraumatic knee osteoarthritis (PTOA). Aberrant gait biomechanics contribute to PTOA and are attributable in part to quadriceps dysfunction. Vibration improves quadriceps function following ACLR, but its effects on gait biomechanics are unknown. The purpose of this study was to evaluate the effects of whole-body vibration (WBV) and local muscle vibration (LMV) on gait biomechanics in individuals with ACLR. Seventy-five volunteers (time since ACLR 27 ± 16 months) were randomized to WBV, LMV, or Control interventions. Walking biomechanics were assessed prior to and following a single exposure to the interventions. Outcomes included pre-post change scores in the ACLR limb for the peak vertical ground reaction force (vGRF) and its loading rate, peak internal knee extension (KEM) and abduction moments, and peak knee flexion and varus angles. LMV produced a significant decrease in the vGRF loading rate (-3.6 BW/s) that was greater than the changes in the WBV (-0.3 BW/s) and Control (0.5 BW/s) groups. Additionally, WBV produced an increase in the peak KEM (0.27% BW × Ht) that was greater than the change in the Control group (-0.17% BW × Ht) but not the LMV group (0.01% BW × Ht). Lower KEM and greater loading rates have been linked to declines in joint health following ACLR. WBV acutely increased the peak KEM and LMV decreased loading rates. These data suggest that vibration has the potential to mitigate aberrant gait biomechanics, and may represent an effective approach for reducing PTOA risk following ACLR.
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Affiliation(s)
- Troy Blackburn
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.,Department of Allied Health Sciences, Program in Human Movement Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Darin A Padua
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.,Department of Allied Health Sciences, Program in Human Movement Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Brian Pietrosimone
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.,Department of Allied Health Sciences, Program in Human Movement Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Todd A Schwartz
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Jeffrey T Spang
- Department of Orthopaedics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | | | - Derek R Dewig
- Department of Allied Health Sciences, Program in Human Movement Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Chris D Johnston
- Department of Athletic Training, High Point University, North Carolina
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Rosteius T, Jettkant B, Brinkemper A, Rausch V, Lotzien S, Geßmann J, Schildhauer TA, Königshausen M. Long-term follow up of extensor tendon ruptures of the knee using electromyography and three-dimensional gait analysis. Knee 2021; 29:251-261. [PMID: 33676320 DOI: 10.1016/j.knee.2021.02.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 01/09/2021] [Accepted: 02/08/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND The aim of this study was to analyze the long-term outcomes of extensor tendon ruptures of the knee using exact measuring tools. METHODS The results of patients treated for extensor tendon rupture with a minimum follow up of 10 years were reviewed. Electromyography (EMG) and three-dimensional (3D) gait analyses were performed and compared with the healthy side of each patient and with the gait patterns of 20 healthy controls. Functional outcome scores were assessed using the Lysholm score and Knee Injury and Osteoarthritis Outcome Score (KOOS). RESULTS After a mean of 13.4 ± 3 years, 23 patients were available for follow up. The mean Lysholm score was 86.6, and the KOOS averaged 78.1. Gait analysis showed no major kinematic differences between these patients compared with healthy controls. In the squat test, the mean peak amplitude of the rectus femoris muscle was significantly smaller on the injured side than on the healthy side (140.21 ± 66.13 μV vs. 168.25 ± 91.77 μV; P = 0.01). The mean peaks of the vastus lateralis and medialis EMG signals were also lower on the injured side (P = 0.63; P = 0.08). Correspondingly, the thigh girth at 20 cm and 10 cm above the knee was significantly lower on the injured side. One patient had re-rupture after patella tendon repair. CONCLUSION At long-term follow up the patients reached good clinical outcomes and exhibited mainly physiological gait patterns after rupture of knee extensor tendons. However, the thigh muscles showed hypotrophy and a significantly smaller EMG signal amplitude during a high-intensity task on the formerly injured side.
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Affiliation(s)
- Thomas Rosteius
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Bochum, Germany
| | - Birger Jettkant
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Bochum, Germany
| | - Alexis Brinkemper
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Bochum, Germany
| | - Valentin Rausch
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Bochum, Germany
| | - Sebastian Lotzien
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Bochum, Germany
| | - Jan Geßmann
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Bochum, Germany
| | | | - Matthias Königshausen
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Bochum, Germany
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Oh J, Kuenze C, Signorile JF, Andersen MS, Letter M, Best TM, Ripic Z, Emerson C, Eltoukhy M. Estimation of ground reaction forces during stair climbing in patients with ACL reconstruction using a depth sensor-driven musculoskeletal model. Gait Posture 2021; 84:232-237. [PMID: 33383533 DOI: 10.1016/j.gaitpost.2020.12.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 12/16/2020] [Accepted: 12/21/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND Although stair ambulation should be included in the rehabilitation of the long-term effects of ACL injury on knee function, the assessment of kinetic parameter in the situation where stair gait can only be established using costly and cumbersome force platforms via conventional inverse dynamic analysis. Therefore, there is a need to develop a practical laboratory setup as an assessment tool of the stair gait abnormalities in lower extremity that arise from an ACL deficiency. RESEARCH QUESTION Can the use of a single depth sensor-driven full-body musculoskeletal gait model be considered an accurate assessment tool of the ground reaction forces (GRFs) during stair climbing for patients following ACL reconstruction (ACLR) surgery? METHODS A total of 15 patients who underwent ACLR participated in this study. GRFs data during stair climbing was collected using a custom-built 3-step staircase with two embedded force platforms. A single depth sensor, commercially available and cost effective, was used to obtain participants' depth map information to extract the full-body skeleton information. The AnyBody TM GaitFullBody model was utilized to estimate GRFs attained by 25 artificial muscle-like actuators placed under each foot. Mean differences between the measured and estimated GRFs were compared using paired samples t-tests. The ensemble curves of the GRFs were compared between both approaches during stance phase of the gait cycle. RESULTS The findings of this study showed that the estimation of the GRFs produced during staircase gait using a depth sensor-driven musculoskeletal model can produce acceptable results when compared to the traditional inverse dynamics modelling approach as an alternative tool in clinical settings for individuals who had undergone ACLR. SIGNIFICANCE The introduced approach of full-body musculoskeletal modelling driven by a single depth sensor has the potential to be a cost-effective stair gait analysis tool for patients with ACL injury.
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Affiliation(s)
- Jeonghoon Oh
- Department of Kinesiology and Sport Sciences, School of Education & Human Development, University of Miami, Coral Gables, FL, 33143, USA
| | - Christopher Kuenze
- Department of Kinesiology, School of Education, Michigan State University, East Lansing, MI, 48824, USA
| | - Joseph F Signorile
- Department of Kinesiology and Sport Sciences, School of Education & Human Development, University of Miami, Coral Gables, FL, 33143, USA; Center on Aging, Miller School of Medicine, University of Miami, Coral Gables, FL, 33146, USA
| | - Michael S Andersen
- Department of Materials and Production, Aalborg University, Fibigerstraede 16, 9220, Aalborg East, Denmark
| | - Michael Letter
- Orthopedic Sports Medicine, Miller School of Medicine, University of Miami, Coral Gables, FL, 33146, USA
| | - Thomas M Best
- Orthopedic Sports Medicine, Miller School of Medicine, University of Miami, Coral Gables, FL, 33146, USA
| | - Zachary Ripic
- Department of Kinesiology and Sport Sciences, School of Education & Human Development, University of Miami, Coral Gables, FL, 33143, USA
| | - Christopher Emerson
- Orthopedic Sports Medicine, Miller School of Medicine, University of Miami, Coral Gables, FL, 33146, USA
| | - Moataz Eltoukhy
- Department of Kinesiology and Sport Sciences, School of Education & Human Development, University of Miami, Coral Gables, FL, 33143, USA.
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Arhos EK, Capin JJ, Buchanan TS, Snyder-Mackler L. Quadriceps Strength Symmetry Does Not Modify Gait Mechanics After Anterior Cruciate Ligament Reconstruction, Rehabilitation, and Return-to-Sport Training. Am J Sports Med 2021; 49:417-425. [PMID: 33373534 PMCID: PMC7863565 DOI: 10.1177/0363546520980079] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND After anterior cruciate ligament (ACL) reconstruction (ACLR), biomechanical asymmetries during gait are highly prevalent, persistent, and linked to posttraumatic knee osteoarthritis. Quadriceps strength is an important clinical measure associated with preoperative gait asymmetries and postoperative function and is a primary criterion for return-to-sport clearance. Evidence relating symmetry in quadriceps strength with gait biomechanics is limited to preoperative and early rehabilitation time points before return-to-sport training. PURPOSE/HYPOTHESIS The purpose was to determine the relationship between symmetry in isometric quadriceps strength and gait biomechanics after return-to-sport training in athletes after ACLR. We hypothesized that as quadriceps strength symmetry increases, athletes will demonstrate more symmetric knee joint biomechanics, including tibiofemoral joint loading during gait. STUDY DESIGN Cross-sectional study; Level of evidence, 3. METHODS Of 79 athletes enrolled in the ACL-SPORTS Trial, 76 were participants in this study after completing postoperative rehabilitation and 10 return-to-sport training sessions (mean ± SD, 7.1 ± 2.0 months after ACLR). All participants completed biomechanical walking gait analysis and isometric quadriceps strength assessment using an electromechanical dynamometer. Quadriceps strength was calculated using a limb symmetry index (involved limb value / uninvolved limb value × 100). The biomechanical variables of interest included peak knee flexion angle, peak knee internal extension moment, sagittal plane knee excursion at weight acceptance and midstance, quadriceps muscle force at peak knee flexion angle, and peak medial compartment contact force. Spearman rank correlation (ρ) coefficients were used to determine the relationship between limb symmetry indexes in quadriceps strength and each biomechanical variable; alpha was set to .05. RESULTS Of the 76 participants, 27 (35%) demonstrated asymmetries in quadriceps strength, defined by quadriceps strength symmetry <90% (n = 23) or >110% (n = 4) (range, 56.9%-131.7%). For the biomechanical variables of interest, 67% demonstrated asymmetry in peak knee flexion angle; 68% and 83% in knee excursion during weight acceptance and midstance, respectively; 74% in internal peak knee extension moment; 57% in medial compartment contact force; and 74% in quadriceps muscle force. There were no significant correlations between quadriceps strength index and limb symmetry indexes for any biomechanical variable after return-to-sport training (P > .129). CONCLUSION Among those who completed return-to-sport training after ACLR, subsequent quadriceps strength symmetry was not correlated with the persistent asymmetries in gait biomechanics. After a threshold of quadriceps strength is reached, restoring strength alone may not ameliorate gait asymmetries, and current clinical interventions and return-to-sport training may not adequately target gait.
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Affiliation(s)
- Elanna K. Arhos
- Biomechanics and Movement Science Program, University of Delaware, Newark, DE, USA,Department of Physical Therapy, University of Delaware, Newark, DE, USA
| | - Jacob J. Capin
- Biomechanics and Movement Science Program, University of Delaware, Newark, DE, USA,Department of Physical Therapy, University of Delaware, Newark, DE, USA,Physical Therapy Program, Department of Physical Medicine and Rehabilitation, University of Colorado, Aurora, CO,Eastern Colorado Veterans Affairs (VA) Geriatric Research Education and Clinical Center (GRECC), Aurora, CO
| | - Thomas S. Buchanan
- Biomechanics and Movement Science Program, University of Delaware, Newark, DE, USA,Department of Mechanical Engineering, University of Delaware, Newark, DE, USA,Department of Biomedical Engineering, University of Delaware, Newark, DE, USA,Delaware Rehabilitation Institute, University of Delaware, Newark, DE, USA
| | - Lynn Snyder-Mackler
- Biomechanics and Movement Science Program, University of Delaware, Newark, DE, USA,Department of Physical Therapy, University of Delaware, Newark, DE, USA,Department of Biomedical Engineering, University of Delaware, Newark, DE, USA,Delaware Rehabilitation Institute, University of Delaware, Newark, DE, USA
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Pietrosimone B, Davis-Wilson HC, Seeley MK, Johnston C, Spang JT, Creighton RA, Kamath GM, Blackburn JT. Gait Biomechanics in Individuals Meeting Sufficient Quadriceps Strength Cutoffs Following Anterior Cruciate Ligament Reconstruction. J Athl Train 2021; 56:960-966. [PMID: 33481020 DOI: 10.4085/425-20] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
CONTEXT Quadriceps weakness is associated with disability and aberrant gait biomechanics following anterior cruciate ligament reconstruction (ACLR). Strength sufficiency cutoff scores, that normalize quadriceps strength to the mass of an individual, are capable of predicting individuals who will report better function following ACLR. Yet, it remains unknown if gait biomechanics differ between individuals who meet a strength sufficiency cutoff (strong) compared to those who do not (weak). OBJECTIVE Determine if vertical ground reaction force (vGRF), knee flexion angle (KFA) and internal knee extension moment (KEM) differ between strong and weak individuals with an ACLR throughout stance phase of walking. DESIGN Comparison-control. SETTING Laboratory Participants: Individuals who received unilateral ACLR ≥12 months prior to testing were dichotomized into strong (n=31) and weak groups (n=116). MAIN OUTCOME MEASURES Maximal isometric quadriceps strength was collected at 90° of knee flexion using an isokinetic dynamometer and normalized to body mass. Individuals demonstrating ≥3.0Nm/kg were considered strong. Three-dimensional gait biomechanics were collected at a self-selected walking speed. Biomechanical data were time-normalized to 100% of stance phase. vGRF were normalized to body weight (BW), and KEM was normalized to BW*height. Pairwise comparison functions were calculated for each outcome to identify between-group differences for each percentile of stance. RESULTS vGRF was significantly greater in weak participants for the first 22% of stance (average difference of 6.2% BW) and lesser in weak participants between 36-43% of stance (1.4% BW). KFA was significantly greater (i.e., more flexion) in strong participants between 6-62% of stance (2.3°) and lesser (i.e., less flexion) between 68-79% of stance (1.0°). KEM was significantly greater in strong participants between 7-62% of stance (0.007 BW*height). CONCLUSIONS ACLR individuals able to generate knee extension torque ≥3.0Nm/kg exhibit different biomechanical gait profiles compared to weak individuals, which may allow for better energy attenuation following ACLR.
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Affiliation(s)
- Brian Pietrosimone
- 1MOTION Science Institute, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States.,2Human Movement Science Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States.,3Department of Orthopaedics, School of Medicine, University of North Carolina at Chapel Hill, North Carolina, United States
| | - Hope C Davis-Wilson
- 1MOTION Science Institute, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States.,2Human Movement Science Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States
| | - Matthew K Seeley
- 4Department of Exercise Sciences, Brigham Young University, Provo, Utah, United States
| | - Christopher Johnston
- 1MOTION Science Institute, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States.,2Human Movement Science Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States
| | - Jeffrey T Spang
- 3Department of Orthopaedics, School of Medicine, University of North Carolina at Chapel Hill, North Carolina, United States
| | - R Alexander Creighton
- 3Department of Orthopaedics, School of Medicine, University of North Carolina at Chapel Hill, North Carolina, United States
| | - Ganesh M Kamath
- 3Department of Orthopaedics, School of Medicine, University of North Carolina at Chapel Hill, North Carolina, United States
| | - J Troy Blackburn
- 1MOTION Science Institute, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States.,2Human Movement Science Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States.,3Department of Orthopaedics, School of Medicine, University of North Carolina at Chapel Hill, North Carolina, United States
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Davis-Wilson HC, Pfeiffer SJ, Johnston CD, Seeley MK, Harkey MS, Blackburn JT, Fockler RP, Spang JT, Pietrosimone B. Bilateral Gait 6 and 12 Months Post-Anterior Cruciate Ligament Reconstruction Compared with Controls. Med Sci Sports Exerc 2020; 52:785-794. [PMID: 31809411 DOI: 10.1249/mss.0000000000002208] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE To compare gait biomechanics throughout stance phase 6 and 12 months after unilateral anterior cruciate ligament reconstruction (ACLR) between ACLR and contralateral limbs and compared with controls. METHODS Vertical ground reaction force (vGRF), knee flexion angle (KFA), and internal knee extension moment (KEM) were collected bilaterally 6 and 12 months post-ACLR in 30 individuals (50% female, 22 ± 3 yr, body mass index = 23.8 ± 2.2 kg·m) and at a single time point in 30 matched uninjured controls (50% female, 22 ± 4 yr, body mass index = 23.6 ± 2.1 kg·m). Functional analyses of variance were used to evaluate the effects of limb (ACLR, contralateral, and control) and time (6 and 12 months) on biomechanical outcomes throughout stance. RESULTS Compared with the uninjured controls, the ACLR group demonstrated bilaterally lesser vGRF (ACLR, 9% body weight [BW]; contralateral, 4%BW) during early stance and greater vGRF during midstance (ACLR, 5%BW; contralateral, 4%BW) 6 months post-ACLR. Compared to the uninjured controls, the ACLR group demonstrated bilaterally lesser vGRF (ACLR, 10%BW; contralateral, 8%BW) during early stance and greater vGRF during midstance (ACLR, 5%BW; contralateral, 5%BW) 12 months post-ACLR. Compared with controls, the ACLR limb demonstrated lesser KFA during early stance at 6 (2.3°) and 12 months post-ACLR (2.0°), and the contralateral limb demonstrated lesser KFA during early stance at 12 months post-ACLR (2.8°). Compared with controls, the ACLR limb demonstrated lesser KEM during early stance at both 6 months (0.011BW × height) and 12 months (0.007BW × height) post-ACLR, and the contralateral limb demonstrated lesser KEM during early stance only at 12 months (0.006BW × height). CONCLUSIONS Walking biomechanics are altered bilaterally after ACLR. During the first 12 months post-ACLR, both the ACLR and contralateral limbs demonstrate biomechanical differences compared with control limbs. Differences between the contralateral and control limbs increase from 6 to 12 months post-ACLR.
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Affiliation(s)
| | | | | | - Matthew K Seeley
- Department of Exercise Sciences, Brigham Young University, Provo, UT
| | | | | | - Ryan P Fockler
- MOTION Science Institute, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Jeffrey T Spang
- Department of Orthopaedics, School of Medicine, University of North Carolina at Chapel Hill, NC
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Troy Blackburn J, Dewig DR, Johnston CD. Time course of the effects of vibration on quadriceps function in individuals with anterior cruciate ligament reconstruction. J Electromyogr Kinesiol 2020; 56:102508. [PMID: 33302006 DOI: 10.1016/j.jelekin.2020.102508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/16/2020] [Accepted: 11/23/2020] [Indexed: 11/18/2022] Open
Abstract
Quadriceps dysfunction is a common, chronic complication following anterior cruciate ligament reconstruction (ACLR) that contributes to aberrant gait biomechanics and poor joint health. Vibration enhances quadriceps function in individuals with ACLR, but the duration of these effects is unknown. This study evaluated the time course of the effects of whole body vibration (WBV) and local muscle vibration (LMV) on quadriceps function. Twenty-four volunteers with ACLR completed 3 testing sessions during which quadriceps isometric peak torque, rate of torque development, and EMG amplitude were assessed prior to and immediately, 10, 20, 30, 45, and 60 min following a WBV, LMV, or control intervention. WBV and LMV (30 Hz, 2g) were applied during six one-minute bouts. WBV increased peak torque 5-11% relative to baseline and control at all post-intervention time points. LMV increased peak torque 6% relative to baseline at 10 min post-intervention and 4-6% relative to control immediately, 10 min, and 20 min post-intervention. The interventions did not influence EMG amplitudes or rate of torque development. The sustained improvements in quadriceps following vibration, especially WBV, suggest that it could be applied at the beginning of rehabilitation sessions to "prime" the central nervous system, potentially improving the efficacy of ACLR rehabilitative exercise.
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Affiliation(s)
- J Troy Blackburn
- Department of Exercise and Sport Science, High Point University, USA; Program in Human Movement Science, High Point University, USA.
| | - Derek R Dewig
- Program in Human Movement Science, High Point University, USA
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Washabaugh EP, Augenstein TE, Ebenhoeh AM, Qiu J, Ford KA, Krishnan C. Design and Preliminary Assessment of a Passive Elastic Leg Exoskeleton for Resistive Gait Rehabilitation. IEEE Trans Biomed Eng 2020; 68:1941-1950. [PMID: 33201805 DOI: 10.1109/tbme.2020.3038582] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVE This article aimed to develop a unique exoskeleton to provide different types of elastic resistances (i.e., resisting flexion, extension, or bidirectionally) to the leg muscles during walking. METHODS We created a completely passive leg exoskeleton, consisting of counteracting springs, pulleys, and clutches, to provide different types of elastic resistance to the knee. We first used a benchtop setting to calibrate the springs and validate the resistive capabilities of the device. We then tested the device's ability to alter gait mechanics, muscle activation, and kinematic aftereffects when walking on a treadmill under the three resistance types. RESULTS Benchtop testing indicated that the device provided a nearly linear torque profile and could be accurately configured to alter the angle where the spring system was undeformed (i.e., the resting position). Treadmill testing indicated the device could specifically target knee flexors, extensors, or both, and increase eccentric loading at the joint. Additionally, these resistance types elicited different kinematic aftereffects that could be used to target user-specific spatiotemporal gait deficits. CONCLUSION These results indicate that the elastic device can provide various types of targeted resistance training during walking. SIGNIFICANCE The proposed elastic device can provide a diverse set of resistance types that could potentially address user-specific muscle weaknesses and gait deficits through functional resistance training.
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Huang YL, Chang E, Johnson ST, Pollard CD, Hoffman MA, Norcross MF. Explosive Quadriceps Strength and Landing Mechanics in Females with and without Anterior Cruciate Ligament Reconstruction. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E7431. [PMID: 33065986 PMCID: PMC7599476 DOI: 10.3390/ijerph17207431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 10/02/2020] [Accepted: 10/10/2020] [Indexed: 11/18/2022]
Abstract
Lower explosive quadriceps strength, quantified as rate of torque development (RTD), may contribute to landing mechanics associated with anterior cruciate ligament (ACL) injury risk. However, the association between quadriceps RTD and landing mechanics during high demand tasks remains unclear. Therefore, this study investigated the influence of quadriceps RTD on sagittal plane landing mechanics during double-leg jump landings (DLJL) and single-leg jump cuts (SLJC) in females with and without ACL reconstruction (ACLR). Quadriceps RTD was measured during isometric muscle contractions. Landing mechanics were collected during DLJL and SLJC tasks. Separate stepwise multiple linear regression models determined the amount of variance in sagittal plane landing mechanics that could be explained by quadriceps RTD, group (ACLR or Control), and their interaction. The results indicate that greater quadriceps RTD is associated with lower loading rate (p = 0.02) and longer time to peak vertical ground reaction force (p = 0.001) during SLJC, regardless of ACLR status. As greater loading rate may lead to higher risk of ACL injuries and post-traumatic knee osteoarthritis post-ACLR, explosive muscle strength interventions might be useful for individuals with and without ACLR to facilitate the use of safer landing mechanics.
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Affiliation(s)
- Yu-Lun Huang
- Department of Kinesiology, College of Education and Human Sciences, University of Wisconsin–Eau Claire, Eau Claire, WI 54702, USA
| | - Eunwook Chang
- Department of Kinesiology, Inha University, Incheon 22212, Korea
| | - Samuel T. Johnson
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR 97331, USA; (S.T.J.); (M.A.H.); (M.F.N.)
| | - Christine D. Pollard
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University-Cascades, Bend, OR 97701, USA;
| | - Mark A. Hoffman
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR 97331, USA; (S.T.J.); (M.A.H.); (M.F.N.)
| | - Marc F. Norcross
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR 97331, USA; (S.T.J.); (M.A.H.); (M.F.N.)
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Central Activation Ratio Is a Reliable Measure for Gluteal Neuromuscular Function. J Sport Rehabil 2020; 29:956-962. [PMID: 31775118 DOI: 10.1123/jsr.2019-0243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 08/12/2019] [Accepted: 09/20/2019] [Indexed: 11/18/2022]
Abstract
CONTEXT Central activation ratio (CAR) is a common outcome measure used to quantify gross neuromuscular function of the quadriceps using the superimposed burst technique, yet this outcome measure has not been validated in the gluteal musculature. OBJECTIVE To quantify gluteus medius (GMed) and gluteus maximus (GMax) CAR in a healthy population and evaluate its validity and reliability over a 1-week period. DESIGN Descriptive. SETTING Laboratory. PATIENTS OR OTHER PARTICIPANTS A total of 20 healthy participants (9 males and 11 females; age 22.2 [1.4] y, height 173.4 [11.1] cm, mass 84.8 [25.8] kg) were enrolled in this study. INTERVENTIONS Participants were assessed at 2 sessions, separated by 1 week. Progressive electrical stimuli (25%, 50%, 75%, and 100%) were delivered to the GMed and GMax at rest, and 100% stimuli were delivered during progressive hip abduction and extension contractions (25%, 50%, 75%, and 100% maximal voluntary isometric contraction). MAIN OUTCOME MEASURES GMed and GMax CAR, and hip abduction and hip extension maximal voluntary isometric contraction torque. Line of best fit and coefficient of determination (r2) were used to assess the relationship between torque output and CAR at varying levels of stimuli. Intraclass correlation coefficients, ICCs(3,k), were used to assess the between-session reliability. RESULTS GMed CAR was 96.1% (3.4%) and 96.6% (3.2%), on visits 1 and 2, respectively, whereas GMax CAR was 86.5% (7.5%) and 87.2% (10.7%) over the 2 sessions. A third-order polynomial demonstrated the best line of fit between varying superimposed burst intensities at rest for both GMed (r2 = .156) and GMax (r2 = .602). Linear relationships were observed in the CAR during progressive contractions with a maximal superimposed burst, GMed (r2 = .409) and GMax (r2 = .639). Between-session reliability was excellent for GMed CAR, ICC(3,k) = .911, and moderate for GMax CAR, ICC(3,k) = .704. CONCLUSION CAR appears to be an acceptable measure of GMed and GMax neuromuscular function in healthy individuals. Gluteal CAR measurements are reliable measures over a 1-week test period.
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Munsch AE, Pietrosimone B, Franz JR. The effects of knee extensor moment biofeedback on gait biomechanics and quadriceps contractile behavior. PeerJ 2020; 8:e9509. [PMID: 32714665 PMCID: PMC7353917 DOI: 10.7717/peerj.9509] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 06/18/2020] [Indexed: 12/20/2022] Open
Abstract
Individuals with knee joint pathologies exhibit quadriceps dysfunction that, during walking, manifests as smaller peak knee extensor moment (pKEM) and reduced knee flexion excursion. These changes persist despite muscle strengthening and may alter stance phase knee joint loading considered relevant to osteoarthritis risk. Novel rehabilitation strategies that more directly augment quadriceps mechanical output during functional movements are needed to reduce this risk. As an important first step, we tested the efficacy of real-time biofeedback during walking to prescribe changes of ±20% and ±40% of normal walking pKEM values in 11 uninjured young adults. We simultaneously recorded knee joint kinematics, ground reaction forces, and, via ultrasound, vastus lateralis (VL) fascicle length change behavior. Participants successfully responded to real-time biofeedback and averaged up to 55% larger and 51% smaller than normal pKEM values with concomitant and potentially favorable changes in knee flexion excursion. While the VL muscle-tendon unit (MTU) lengthened, VL fascicles accommodated weight acceptance during walking largely through isometric, or even slight concentric, rather than eccentric action as is commonly presumed. Targeted pKEM biofeedback may be a useful rehabilitative and/or scientific tool to elicit desirable changes in knee joint biomechanics considered relevant to the development of osteoarthritis.
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Affiliation(s)
- Amanda E Munsch
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC, United States of America
| | - Brian Pietrosimone
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States of America
| | - Jason R Franz
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC, United States of America
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The Relationship Between Vertical Ground Reaction Force, Loading Rate, and Sound Characteristics During a Single-Leg Landing. J Sport Rehabil 2020; 29:541-546. [DOI: 10.1123/jsr.2018-0260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 01/31/2019] [Accepted: 03/10/2019] [Indexed: 11/18/2022]
Abstract
Context:Landing kinetic outcomes are associated with injury risk and may be persistently altered after anterior cruciate ligament injury or reconstruction. However, it is challenging to assess kinetics clinically. The relationship between sound characteristics and kinetics during a limited number of functional tasks has been supported as a potential clinical alternative.Objective:To assess the relationship between kinetics and sound characteristics during a single-leg landing task.Design:ObservationalSetting:Laboratory.Participants:There was total of 26 healthy participants (15 males/11 females, age = 24.8 [3.6] y, height = 176.0 [9.1] cm, mass = 74.9 [14.4] kg, Tegner Activity Scale = 6.1 [1.1]).Intervention:Participants completed single-leg landings onto a force plate while audio characteristics were recorded.Main Outcome Measures:Peak vertical ground reaction force, linear loading rate, instantaneous loading rate, peak sound magnitude, sound frequency were measured. Means and SDs were calculated for each participant’s individual limbs. Spearman rho correlations were used to assess the relationships between audio characteristics and kinetic outcomes.Results:Peak sound magnitude was positively correlated with normalized peak vertical ground reaction force (ρ = .486,P = .001); linear loading rate (ρ = .491,P = .001); and instantaneous loading rate (ρ = .298,P = .03). Sound frequency was negatively correlated with instantaneous loading rate (ρ = −.444,P = .001).Conclusions:Peak sound magnitude may be more helpful in providing feedback about an individual’s normalized vertical ground reaction force and linear loading rate, and sound frequency may be more helpful in providing feedback about instantaneous loading rate. Further refinement in sound measurement techniques may be required before these findings can be applied in a clinical population.
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Turpeinen J, Freitas TT, Rubio‐Arias JÁ, Jordan MJ, Aagaard P. Contractile rate of force development after anterior cruciate ligament reconstruction—a comprehensive review and meta‐analysis. Scand J Med Sci Sports 2020; 30:1572-1585. [DOI: 10.1111/sms.13733] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 05/17/2020] [Accepted: 05/18/2020] [Indexed: 01/01/2023]
Affiliation(s)
| | - Tomás T. Freitas
- UCAM Research Center for High Performance Sport Murcia Spain
- NAR—Nucleus of High Performance in Sport São Paulo Brazil
| | - Jacobo Ángel Rubio‐Arias
- UCAM Research Center for High Performance Sport Murcia Spain
- LFE Research Group Department of Health and Human Performance Faculty of Physical Activity and Sport Science‐INEF Universidad Politécnica de Madrid Madrid Spain
| | | | - Per Aagaard
- Department of Sports Science and Clinical Biomechanics SDU Muscle Research Cluster (SMRC) University of Southern Denmark Odense M Denmark
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Effect of rocker-sole footwear on knee joint biomechanics while walking in people with ACL-reconstructed knees: a cross-sectional biomechanical study. CURRENT ORTHOPAEDIC PRACTICE 2020. [DOI: 10.1097/bco.0000000000000881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Paoli A, Moro T, Lorenzetti S, Seiler J, Lüthy F, Gross M, Roggio F, Chaabene H, Musumeci G. The " Journal of Functional Morphology and Kinesiology" Journal Club Series: Resistance Training. J Funct Morphol Kinesiol 2020; 5:jfmk5020025. [PMID: 33467241 PMCID: PMC7739424 DOI: 10.3390/jfmk5020025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 11/16/2022] Open
Abstract
We are glad to introduce the Second Journal Club of Volume Five, Second Issue. This edition is focused on relevant studies published in the last few years in the field of resistance training, chosen by our Editorial Board members and their colleagues. We hope to stimulate your curiosity in this field and to share with you the passion for the sport, seen also from the scientific point of view. The Editorial Board members wish you an inspiring lecture.
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Affiliation(s)
- Antonio Paoli
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy
| | - Tatiana Moro
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy
| | - Silvio Lorenzetti
- Swiss Federal Institute of Sport Magglingen (SFISM), 2532 Magglingen, Switzerland
| | - Jan Seiler
- Swiss Federal Institute of Sport Magglingen (SFISM), 2532 Magglingen, Switzerland
| | - Fabian Lüthy
- Swiss Federal Institute of Sport Magglingen (SFISM), 2532 Magglingen, Switzerland
| | - Micah Gross
- Swiss Federal Institute of Sport Magglingen (SFISM), 2532 Magglingen, Switzerland
| | - Federico Roggio
- Department of Biomedical and Biotechnological Sciences, Anatomy, Histology and Movement Sciences Section, School of Medicine, University of Catania, Via S. Sofia 87, 95123 Catania, Italy
| | - Helmi Chaabene
- Division of Training and Movement Sciences, University of Potsdam, Am Neuen Palais 10, 14469 Potsdam, Germany
| | - Giuseppe Musumeci
- Department of Biomedical and Biotechnological Sciences, Anatomy, Histology and Movement Sciences Section, School of Medicine, University of Catania, Via S. Sofia 87, 95123 Catania, Italy
- Research Center on Motor Activities (CRAM), University of Catania, 95123 Catania, Italy
- Department of Biology, Sbarro Institute for Cancer Research and Molecular Medicine, College of Science and Technology, Temple University, Philadelphia, PA 19122, USA
- Correspondence: ; Tel.: +39-095-378-2043
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Knee Joint and Quadriceps Dysfunction in Individuals With Anterior Knee Pain, Anterior Cruciate Ligament Reconstruction, and Meniscus Surgery: A Cross-Sectional Study. J Sport Rehabil 2020; 30:112-119. [PMID: 32234996 DOI: 10.1123/jsr.2018-0482] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/01/2020] [Accepted: 01/26/2020] [Indexed: 11/18/2022]
Abstract
CONTEXT While arthrogenous muscle inhibition associated with knee injuries is evident, the relative magnitude of functional deficiency related to each individual knee pathology is unclear. OBJECTIVE To compare the knee joint and quadriceps dysfunction among patients with anterior knee pain (AKP) without surgical history and those with surgical history (anterior cruciate ligament reconstruction [ACLR]; meniscus surgery) without current AKP, with matched healthy controls. DESIGN Cross-sectional study. SETTING Laboratory. PARTICIPANTS A total of 66 patients with knee pathologies and 30 controls. MAIN OUTCOME MEASURES Pain perception and lower-extremity functional outcomes were assessed. Knee joint function was measured by replication tests. Quadriceps function was measured by strength, voluntary activation, and torque-generating capacity. RESULTS Patients with AKP reported greater pain perception compared with the other knee conditions (4.3 vs 0.1 of 10 in Numeric Pain Rating Scale, P < .0001). Compared with the controls: (1) patients with AKP showed a greater error on knee-flexion replications at 75° (2.9° vs 5.4°, P = .002), (2) patients with AKP and ACLR showed less quadriceps strength (AKP: 3.3 vs 2.6 N·m/kg, P = .002; ACLR: 3.3 vs 2.7 N·m/kg, P = .02) and voluntary activation (AKP: 0.982 vs 0.928, P < .0001; ACLR: 0.982 vs 0.946, P = .003), and (3) all knee pathologies reported lower scores on functional outcomes (79 vs 65 of 80 points in Lower-Extremity Functional Scale, P < .0001) and showed less quadriceps torque-generating capacity (10.7 vs 7.8 N·m/s/kg, P < .0001). Among the knee pathologies, patients with AKP showed less quadriceps voluntary activation compared with the patients with meniscus surgery (0.928 vs 0.964, P = .03). CONCLUSION As patients with AKP had an additional impairment in knee joint flexion replications and reported a less score in functional outcomes, knee pain may produce a greater impact on functional deficiency.
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