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Dzidotor GK, Moorhead JB, Ude CC, Ogueri KS, Ghosh D, Laurencin CT. Functions and Effectiveness of Unloader, Patellofemoral, and Knee Sleeve Orthoses: A Review. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2024; 10:147-171. [PMID: 38983777 PMCID: PMC11233114 DOI: 10.1007/s40883-023-00313-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 05/18/2023] [Accepted: 07/06/2023] [Indexed: 07/11/2024]
Abstract
Background Knee orthoses have been extensively used as a nonsurgical approach to improving knee deficiencies. Currently, arthritic knee conditions remain the leading cause of disability, and this number is expected to increase. As the use of knee orthoses varies widely, so has their effectiveness which is still largely debatable. Here, we present the functions and effectiveness of the three most prominent knee orthotic models dedicated to supporting knee osteoarthritis-unloader, patellofemoral, and knee sleeves. Purpose/Research Question Considering the depth and diversity of the many clinical studies and documented laboratory reports published to date, this literature review was created to educate the clinician, patient, and researcher on common knee orthoses used for the management of arthritic knee conditions. In doing so, we discuss their design, biomechanical effects, and clinical efficacy, as well as broader outcomes, limitations, and recommendations for use. Results/Synthesis The knee orthoses discussed within the scope of this paper are dedicated to protecting the knee against strenuous compressive loads that may affect the patellofemoral and tibiofemoral joints of the knee. Since the knee has multiple axes of motion and articulating surfaces that experience different loads during functional activities, it can be implied that, to a large extent, knee brace designs can differ drastically. Unloader knee orthoses are designed to decrease tibiofemoral and patellofemoral joint pressures. Patellofemoral knee orthoses are designed to decrease strain on the patellofemoral and quadriceps tendons while stabilizing the patella. Knee sleeves are designed to stabilize movements, reduce pain in joints, and improve proprioception across the knee joint. Conclusion Although patients often report benefits from wearing braces, these benefits have not been confirmed by clinicians and scientific investigators. Results from these three orthosis types show that clinical efficacy is still elusive due to the different methodologies used by researchers. Layman Summary Knee orthoses also referred to as knee brace are commonly used for support and stability of the knee. Unloader knee braces are designed to relieve and support those suffering from knee osteoarthritis by improving physical impairment and reducing pain. Patellofemoral knee braces aim to help patients manage patellofemoral pain syndrome. Rehabilitative compression sleeves, also known as knee sleeves, are often used to assist patients suffering from knee pain and laxity. Important findings on the three knee braces discussed show discrepancies in results. Their effectiveness and validity are yet to be understood.
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Affiliation(s)
- Godwin K. Dzidotor
- The Cato T. Laurencin Institute for Regenerative Engineering, University of Connecticut Health, Farmington, CT, USA
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Mansfield Rd, Storrs, CT, USA
| | - Jeffrey B. Moorhead
- The Cato T. Laurencin Institute for Regenerative Engineering, University of Connecticut Health, Farmington, CT, USA
| | - Chinedu C. Ude
- The Cato T. Laurencin Institute for Regenerative Engineering, University of Connecticut Health, Farmington, CT, USA
- Department of Orthopaedic Surgery, University of Connecticut Health, Farmington, CT, USA
| | - Kenneth S. Ogueri
- The Cato T. Laurencin Institute for Regenerative Engineering, University of Connecticut Health, Farmington, CT, USA
- Institute of Materials Science, University of Connecticut, Mansfield Rd, Storrs, CT, USA
- Department of Materials Science and Engineering, University of Connecticut, Mansfield Rd, Storrs, CT, USA
| | - Debolina Ghosh
- The Cato T. Laurencin Institute for Regenerative Engineering, University of Connecticut Health, Farmington, CT, USA
| | - Cato T. Laurencin
- The Cato T. Laurencin Institute for Regenerative Engineering, University of Connecticut Health, Farmington, CT, USA
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Mansfield Rd, Storrs, CT, USA
- Department of Orthopaedic Surgery, University of Connecticut Health, Farmington, CT, USA
- Institute of Materials Science, University of Connecticut, Mansfield Rd, Storrs, CT, USA
- Department of Materials Science and Engineering, University of Connecticut, Mansfield Rd, Storrs, CT, USA
- Department of Biomedical Engineering, University of Connecticut, Mansfield Rd, Storrs, CT, USA
- Department of Craniofacial Sciences, School of Dental Medicine, University of Connecticut Health, Farmington, CT, USA
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Ackerman DR, Ptasinski AM, Edmond T, Dunleavy ML, Gallo RA. Prophylactic Knee Bracing in Offensive Linemen of the National Football League: A Retrospective Analysis of Usage Trends, Player Performance, and Major Knee Injury. Orthop J Sports Med 2023; 11:23259671231191767. [PMID: 37655245 PMCID: PMC10467376 DOI: 10.1177/23259671231191767] [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] [Received: 03/22/2023] [Accepted: 05/03/2023] [Indexed: 09/02/2023] Open
Abstract
Background Offensive linemen in American football are prone to high-energy valgus forces to the knee, leading to associated injuries. Some offensive linemen in the National Football League (NFL) wear prophylactic knee braces (PKB) to prevent ligamentous injury. Purpose/Hypothesis This purpose of the study was to compare injury rates and performance between NFL offensive linemen who wear PKB and those who do not. It was hypothesized that brace wear would be associated with fewer major knee injuries and no difference in gameplay performance. Study Design Cohort study; Level of evidence, 3. Methods For the 2014 through 2020 NFL seasons, offensive linemen with at least 200 game snaps per regular season were identified. Players were grouped by PKB status (bracers vs nonbracers) based on visualization of bilateral, dual-hinged metal knee braces as part of gameday uniforms on publicly available imaging databases and/or game videos. Major knee injuries, defined as those requiring the missing of games, were identified using publicly available data. Performance was assessed with Pro Football Focus grades for each season. Rates of major knee injury were compared between groups with the 2-sample Z test for proportions, and performance grades were compared with the unpaired t test. Results For the cumulative study period, bracers demonstrated a significantly lower rate of major knee injuries than nonbracers (0.013 vs 0.049 injuries per player, respectively; P = .04). Isolated MCL injury was the most common injury for nonbracers. There was no group difference in performance for the cumulative study period or during most individual seasons. Yearly prevalence of PKB usage declined steadily from 16.3% in 2014 to 5.6% in 2020. A subgroup analysis of rookie players demonstrated an overall downtrend in usage during the study period as well. Conclusion Results indicated that knee brace prophylaxis by NFL offensive linemen was associated with a reduced risk of major knee injury without a significant difference in performance when compared with nonbracers. Despite this, the prevalence of PKB declined over the study period.
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Affiliation(s)
- Devon R. Ackerman
- College of Medicine, The Pennsylvania State University, Hershey, Pennsylvania, USA
| | - Anna M. Ptasinski
- College of Medicine, The Pennsylvania State University, Hershey, Pennsylvania, USA
| | - Travis Edmond
- College of Medicine, The Pennsylvania State University, Hershey, Pennsylvania, USA
| | - Mark L. Dunleavy
- College of Medicine, The Pennsylvania State University, Hershey, Pennsylvania, USA
| | - Robert A. Gallo
- College of Medicine, The Pennsylvania State University, Hershey, Pennsylvania, USA
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Clinical Research Progress of Internal Brace Ligament Augmentation Technique in Knee Ligament Injury Repair and Reconstruction: A Narrative Review. J Clin Med 2023; 12:jcm12051999. [PMID: 36902785 PMCID: PMC10004357 DOI: 10.3390/jcm12051999] [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: 01/24/2023] [Revised: 02/26/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
Knee ligament injuries are most common in sports injuries. In general, ligament repair or reconstruction is necessary to restore the stability of the knee joint and prevent secondary injuries. Despite advances in ligament repair and reconstruction techniques, a number of patients still experience re-rupture of the graft and suboptimal recovery of motor function. Since Dr. Mackay's introduction of the internal brace technique, there has been continuous research in recent years using the internal brace ligament augmentation technique for knee ligament repair or reconstruction, particularly in the repair or reconstruction of the anterior cruciate ligament. This technique focuses on increasing the strength of autologous or allograft tendon grafts through the use of braided ultra-high-molecular-weight polyethylene suture tapes to facilitate postoperative rehabilitation and avoid re-rupture or failure. The purpose of this review is to present detailed research progress in the internal brace ligament enhancement technique of knee ligament injury repair as well as the reconstruction from biomechanical and histological research and clinical studies and to comprehensively assess the value of the application of this technique.
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Biomechanical Effects of Prophylactic Knee Bracing on Anterior Cruciate Ligament Injury Risk: A Systematic Review. Clin J Sport Med 2023; 33:78-89. [PMID: 36599362 DOI: 10.1097/jsm.0000000000001052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 04/27/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Prophylactic knee braces (PKBs) are widely used by athletes in pivoting and landing sports and have the potential to influence knee movement and alignment, thus modulating anterior cruciate ligament (ACL) injury risk. This systematic review analyses current evidence on the biomechanical effects that PKBs have in the prevention of ACL injuries. DATA SOURCES The review was conducted in accordance with Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. Searches were conducted on PubMed, Web of Science, Scopus, Ovid MEDLINE, EMBASE, Cochrane, and CINAHL for studies published from inception until May 31, 2021. Included studies assessed the effects of PKBs on biomechanical variables associated with ACL injuries in landing or pivoting tasks, comparing between braced and unbraced conditions. MAIN RESULTS A total of 234 articles were identified; from which, 14 controlled, laboratory, biomechanical studies were included in this review. The effects of PKBs on knee biomechanics could be divided into kinematic variables in the coronal, sagittal, and transverse planes; and common kinetic variables, such as ground reaction force (GRF) and ACL load/strain. Also, PKBs were found to have protective effects in coronal and transverse plane kinematics, but results in the sagittal plane were inconclusive. Assessing knee kinetics, PKBs were advantageous in decreasing ACL load/strain but had no significant effect on GRF. CONCLUSIONS Prophylactic knee braces may serve to reduce ACL injury risk by modulating knee coronal and transverse plane movements and ACL load/strain during high-risk maneuvres. Precise recommendations are limited by study heterogeneity. More prospective studies are needed to assess ACL injury risk during high-risk sports using specific PKBs.
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Prescription of knee braces after anterior cruciate ligament reconstruction: Fact or fiction? Turk J Phys Med Rehabil 2022; 68:355-363. [DOI: 10.5606/tftrd.2022.8906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 08/22/2021] [Indexed: 11/25/2022] Open
Abstract
Objectives: This study aims to compare the clinical results of patients rehabilitated with or without a rehabilitative knee brace (RKB) after anterior cruciate ligament (ACL) reconstruction.
Patients and methods: This retrospective, comparative study was conducted at between January 2013 and December 2017. A total of 119 patients (112 males, 7 females; mean age: 32.0±8.6 years; range, 18 to 45 years) with acute ACL ruptures treated with arthroscopic ACL reconstruction and rehabilitated with (n=56) or without RKB (n=63) participated in the study. The minimum follow-up time was 24 months. The ACL quality of life (QoL) questionnaire, Lysholm Knee Scoring Scale, and Tegner Activity Level Scale were used for the evaluation of the QoL, knee function, and activity level, respectively. The time to return to sports was recorded. The side-to-side difference in the anterior translation of the tibia was measured using a KT-1000 arthrometer.
Results: The mean follow-up time was 38.4±9.1 (range, 24 to 56) months. Baseline demographics and clinical characteristics were similar between groups. Regarding QoL, knee function, and activity level, no significant difference was observed between patients who used RKB and those who did not use it at the postoperative 12th month (p=0.95, p=0.56, p=0.98, respectively) and the latest follow-up (p=0.21, p=0.73, p=0.99, respectively). The mean time to return to sports (nearly 11 months for both groups) and side-to-side difference in the anterior tibial translation at the latest follow-up was also similar between groups (p=0.15 and p=0.15, respectively). There was no graft rupture during the follow-up in both groups. The complication rates were 7.9% and 7.1% for no brace and brace groups, respectively, without a statistically significant difference (p=0.87).
Conclusion: According to the results of this study, there was no significant difference between the rehabilitative brace and no brace groups in clinical outcomes after ACL reconstruction.
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Mattu AT, Ghali B, Linton V, Zheng A, Pike I. Prevention of Non-Contact Anterior Cruciate Ligament Injuries among Youth Female Athletes: An Umbrella Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19084648. [PMID: 35457516 PMCID: PMC9027388 DOI: 10.3390/ijerph19084648] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 04/06/2022] [Accepted: 04/09/2022] [Indexed: 02/01/2023]
Abstract
Anterior cruciate ligament (ACL) injuries account for a large percentage of knee injuries, disproportionately affecting female athletes. To help health professionals stay current, we performed an umbrella review to evaluate the effectiveness of ACL injury prevention programs in reducing non-contact ACL injury rates, determine the effective components within interventions, and provide clinical recommendations. Twelve databases (Medline, Embase, Cochrane Database of Systematic Reviews, SPORTDiscus, Cumulative Index to Nursing and Allied Health Literature, PEDro, Web of Science Core Collection, Epistemonikos, TRIP, BC Guidelines and Protocols, CPG Infobase, ProQuest Dissertations and Theses Global) were searched in May 2021 to identify relevant systematic reviews and meta-analyses. Four databases were searched again in September 2021 to identify recent primary literature. Non-contact ACL injury data were extracted to calculate incidence rate ratios (IRRs) and these were combined using an inverse variance random-effects model. A qualitative assessment of included reviews was performed. The methodological quality of the studies was assessed using a Measurement Tool to Assess Systematic Reviews 2 (AMSTAR 2) or Cochrane Risk-of-Bias Tool for Randomized Trials (RoB 2). Sixteen reviews and two primary studies met the inclusion criteria. Across 11 primary studies, prevention programs were effective in reducing non-contact ACL injuries by 64% (IRR = 0.36 (95% CI: 0.18–0.70)). A multi-faceted exercise program, beginning in the pre-season and containing at least three exercise types, may be beneficial in reducing ACL injury risk.
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Affiliation(s)
- Anmol T. Mattu
- MD Undergraduate Program, Faculty of Medicine, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
- Correspondence:
| | - Brianna Ghali
- Undergraduate Medical Education, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada;
| | - Vanessa Linton
- BC Injury Research and Prevention Unit, BC Children’s Hospital Research Institute, Vancouver, BC V6H 3V4, Canada; (V.L.); (A.Z.); (I.P.)
| | - Alex Zheng
- BC Injury Research and Prevention Unit, BC Children’s Hospital Research Institute, Vancouver, BC V6H 3V4, Canada; (V.L.); (A.Z.); (I.P.)
| | - Ian Pike
- BC Injury Research and Prevention Unit, BC Children’s Hospital Research Institute, Vancouver, BC V6H 3V4, Canada; (V.L.); (A.Z.); (I.P.)
- Department of Pediatrics, Faculty of Medicine, University of British Columbia, Vancouver, BC V6H 3V4, Canada
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Czamara A, Krzemińska K, Widuchowski W, Dragan SL. The Muscle Strength of the Knee Joint after ACL Reconstruction Depends on the Number and Frequency of Supervised Physiotherapy Visits. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:10588. [PMID: 34682334 PMCID: PMC8536018 DOI: 10.3390/ijerph182010588] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 10/02/2021] [Accepted: 10/05/2021] [Indexed: 01/05/2023]
Abstract
The aim of this study in anterior cruciate ligament reconstruction (ACLR) patients was to assess the effect of six months of supervised physiotherapy with a higher number of visits (SPHNV) compared to supervised physiotherapy with a lower number of visits (SPLNV) on the maximal peak torque (PT) and isometric torque (IT) of values obtained for hamstring (H) and quadriceps (Q) muscles of the knee joints under isokinetic and isometric conditions. Hypothesis: SPHNV improves IT and PT more than SPLNV. Group I had ACLR with a higher number of visits (n = 20), Group II had ACLR with a lower number of visits (n = 20), and Group III served as the control (n = 20). In Groups I and II, IT values were measured for quadriceps and hamstring muscles of the knee joints in the 13th and 24th weeks and for PT in the 18th and 24th weeks after ACLR (60 and 180 °/s). In group III, the measurements were taken once. The isometric torque and isokinetic peak torque values were measured in N*m and they were normalized to body mass as relative IT (RIT) and relative PT (RPT) were expressed in N*m/kg. Results: In both ACLR groups, the RIT and RPT values obtained from the operated knee joints significantly increased in the 24 weeks following ACLR compared to the uninvolved side. Group II had significantly lower RIT and RPT values for quadriceps and hamstring muscles of the operated limbs compared with the uninvolved limbs (p = 0.008, p = 0.001). In group I, the larger number of visits positively correlated with the higher PT for quadriceps and hamstring muscles of the operated and uninvolved knees (from r = 0.506; p = 0.023 too r = 0.566; p = 0.009), respectively. Six months of SPHNV positively correlated with and improved the IT and PT values in patients after ACLR much more significantly than six months of SPLNV.
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Affiliation(s)
- Andrzej Czamara
- Department of Physiotherapy, The College of Physiotherapy in Wroclaw, 50-038 Wroclaw, Poland
| | - Katarzyna Krzemińska
- Center of Rehabilitation and Medical Education in Wroclaw, 50-038 Wroclaw, Poland;
| | - Wojciech Widuchowski
- District Hospital of Orthopedics and Trauma Surgery, 41-940 Piekary Slaskie, Poland;
| | - Szymon Lukasz Dragan
- Department of Regenerative and Restorative Medicine in Orthopaedics, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland;
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Knee Pads Do Not Affect Physical Performance in Young Female Volleyball Players. CHILDREN-BASEL 2021; 8:children8090748. [PMID: 34572180 PMCID: PMC8470544 DOI: 10.3390/children8090748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 11/23/2022]
Abstract
Knee pads have become increasingly popular among volleyball players. Given the fact high-intensity activities that are crucial to successfully playing this sport lead to an increased risk of a knee injury, the primary use of knee pads is to prevent potential injury. However, no research has been carried out to explain the effects of knee pads on the most important physical abilities in volleyball players, thus directly affecting performance. This study was undertaken to determine the effects of knee pads on the explosive power of the lower extremities, linear speed, and agility in young female volleyball players. In two separated sessions, 84 female volleyball players (age: 14.83 ± 0.72 years; height: 163.19 ± 8.38 cm; body mass: 53.64 ± 10.42 kg; VE: 5.30 ± 3.39 years) completed squat jumps (SJ), countermovement jumps (CMJ) with and without arm swing, linear sprints at 5-m and 10-m, modified t-test, and 5-10-5 shuttle test. Data analyses included descriptive statistics, paired sample T-tests and use of effect size (ES). There was no statistical difference between the two conditions for SJ (p = 0.156; ES = 0.18), CMJ (p = 0.817; ES = 0.03), CMJ with arm swing (p = 0.194; ES = 0.14), linear sprint at 5 m (p = 0.789; ES = 0.03) and 10 m (p = 0.907; ES = −0.01), modified t-test (p = 0.284; ES = 0.13), and 5-10-5 shuttle test (p = 0.144; ES = 0.19). Wearing knee pads has neither an inhibitory nor positive effects on explosive power of the lower extremities, linear speed, and agility in young female volleyball players.
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Marois B, Tan XW, Pauyo T, Dodin P, Ballaz L, Nault ML. Can a Knee Brace Prevent ACL Reinjury: A Systematic Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18147611. [PMID: 34300065 PMCID: PMC8303933 DOI: 10.3390/ijerph18147611] [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: 05/26/2021] [Revised: 07/13/2021] [Accepted: 07/14/2021] [Indexed: 12/03/2022]
Abstract
This systematic review aimed to investigate whether the use of a knee brace when returning to sport (RTS) could prevent a second injury after anterior cruciate ligament reconstruction (ACLR). This study was registered with the PROSPERO database and followed PRISMA guidelines. A systematic search of PubMed, Ovid Medline, Ovid All EBM Reviews, Ovid Embase, EBSCO Sportdiscus and ISI Web of Science databases for meta-analysis, randomized controlled trials and prospective cohort studies published before July 2020 was undertaken. The inclusion criteria were: (1) Comparing with and without a brace at RTS, (2) follow up of at least 18 months after ACLR, (3) reinjury rates included in the outcomes. Two reviewers independently extracted the data. Quality appraisal analyses were performed for each study using the Cochrane Collaboration tools for randomized and nonrandomized trials. A total of 1196 patients in three studies were included. One study showed a lower rate of reinjury when wearing a knee brace at RTS. One study found the knee brace to have a significant protective effect for younger patients (≤17 years). The effectiveness of knee bracing when RTS remains ambiguous. Current data cannot support that using a knee brace when RTS will decrease the rate of reinjury after ACL reconstruction.
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Affiliation(s)
- Bianca Marois
- CHU Ste-Justine, 7905-3175 Côte Ste-Catherine, Montréal, QC H3T 1C5, Canada; (B.M.); (P.D.); (L.B.)
| | - Xue Wei Tan
- Department of Surgery, Université de Montréal, 2900 boul. Edouard-Montpetit, Montreal, QC H3T 1J4, Canada;
| | - Thierry Pauyo
- Shriners Hospital, McGill University Health Center, 1003 Decarie Blvd, Montreal, QC H4A 0A9, Canada;
| | - Philippe Dodin
- CHU Ste-Justine, 7905-3175 Côte Ste-Catherine, Montréal, QC H3T 1C5, Canada; (B.M.); (P.D.); (L.B.)
| | - Laurent Ballaz
- CHU Ste-Justine, 7905-3175 Côte Ste-Catherine, Montréal, QC H3T 1C5, Canada; (B.M.); (P.D.); (L.B.)
| | - Marie-Lyne Nault
- CHU Ste-Justine, 7905-3175 Côte Ste-Catherine, Montréal, QC H3T 1C5, Canada; (B.M.); (P.D.); (L.B.)
- Department of Surgery, Université de Montréal, 2900 boul. Edouard-Montpetit, Montreal, QC H3T 1J4, Canada;
- Correspondence: ; Tel.: +1-514-345-6672
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Meredith SJ, Rauer T, Chmielewski TL, Fink C, Diermeier T, Rothrauff BB, Svantesson E, Hamrin Senorski E, Hewett TE, Sherman SL, Lesniak BP, Symposium P. Return to sport after anterior cruciate ligament injury: Panther Symposium ACL Injury Return to Sport Consensus Group. J ISAKOS 2021; 6:138-146. [PMID: 34006577 DOI: 10.1136/jisakos-2020-000495] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/21/2020] [Indexed: 11/03/2022]
Abstract
OBJECTIVES A precise and consistent definition of return to sport (RTS) after anterior cruciate ligament (ACL) injury is lacking, and there is controversy surrounding the process of returning patients to sports and their previous activity level. The aim of the Panther Symposium ACL Injury RTS Consensus Group was to provide a clear definition of RTS after ACL injury and description of the RTS continuum, as well as provide clinical guidance on RTS testing and decision-making. METHODS An international, multidisciplinary group of ACL experts convened as part of a consensus meeting. Consensus statements were developed using a modified Delphi method. Literature review was performed to report the supporting evidence. RESULTS Key points include that RTS is characterised by achievement of the preinjury level of sport and involves a criteria-based progression from return to participation to RTS, and ultimately return to performance. Purely time-based RTS decision-making should be abandoned. Progression occurs along an RTS continuum with decision-making by a multidisciplinary group that incorporates objective physical examination data and validated and peer-reviewed RTS tests, which should involve functional assessment as well as psychological readiness. Consideration should be given to biological healing, contextual factors and concomitant injuries. CONCLUSION The resultant consensus statements and scientific rationale aim to inform the reader of the complex process of RTS after ACL injury that occurs along a dynamic continuum. Research is needed to determine the ideal RTS test battery, the best implementation of psychological readiness testing and methods for the biological assessment of healing and recovery.
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Affiliation(s)
- Sean J Meredith
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA .,Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Thomas Rauer
- Klinik für Traumatologie, UniversitätsSpital Zürich, Zurich, Switzerland
| | | | - Christian Fink
- Gelenkpunkt-Sports and Joint Surgery Innsbruck, Innsbruck, Austria
| | - Theresa Diermeier
- Department of Sportorthopedic, Technical University of Munich, Munchen, Germany
| | - Benjamin B Rothrauff
- Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Eleonor Svantesson
- Department of Orthopedics, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden.,Gothenburg Sport Trauma Research Center, Gothenburg, Sweden
| | - Eric Hamrin Senorski
- Gothenburg Sport Trauma Research Center, Gothenburg, Sweden.,Department of Health and Rehabilitation, University of Gothenburg, Gothenburg, Sweden
| | | | - Seth L Sherman
- Department of Orthopaedic Surgery, Stanford Medicine, Stanford, California, USA
| | - Bryson P Lesniak
- Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Panther Symposium
- Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
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Machek SB, Cardaci TD, Wilburn DT, Cholewinski MC, Latt SL, Harris DR, Willoughby DS. Neoprene Knee Sleeves of Varying Tightness Augment Barbell Squat One Repetition Maximum Performance Without Improving Other Indices of Muscular Strength, Power, or Endurance. J Strength Cond Res 2021; 35:S6-S15. [PMID: 33201154 DOI: 10.1519/jsc.0000000000003869] [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: 11/08/2022]
Abstract
ABSTRACT Machek, SB, Cardaci, TD, Wilburn, DT, Cholewinski, MC, Latt, SL, Harris, DR, and Willoughby, DS. Neoprene knee sleeves of varying tightness augment barbell squat one repetition maximum performance without improving other indices of muscular strength, power, or endurance. J Strength Cond Res 35(2S): S6-S15, 2021-Neoprene knee sleeves are commonly used by powerlifters and recreational users but are heavily under-researched. Furthermore, no data exist on whether knee sleeves of varying compressive tightness impact muscular performance similar to commonly used knee wraps, which are both generally effective and more so when increasingly constrictive. Fifteen resistance trained, knee sleeve naive, recreational weight lifting men (22.1 ± 4.1 years; 177.5 ± 5.9 cm; 87.8 ± 7.8 kg) visited the laboratory on 3 separate occasions one week apart, assigned in a randomized, crossover, and counterbalanced fashion to either a minimally supportive control sleeve (CS) condition, a manufacturer-recommended sizing neoprene knee sleeve ("normal" sleeve; NS), or a one size smaller (than NS) neoprene knee sleeve (tighter sleeve [TS]). On each visit, subjects sequentially completed vertical jump (countermovement and squat jumps for both peak and mean power), one repetition maximum (1RM) barbell squat, and GymAware assessments (peak power, peak velocity, and dip) at 90% (reported) and 100% (tested) 1RM as well as one-leg extension (1RM, repetitions to failure, and total volume load at 75% 1RM) tests. All data were analyzed using one-way repeated measures analysis of variance at p < 0.05. Analysis revealed a significant condition effect on barbell squat 1RM (p = 0.003; η2 = 0.339), whereby both NS (p = 0.044; 166 ± 24 kg) and TS (p = 0.019; 166 ± 21 kg) outperformed CS (161 ± 22 kg), with no difference between neoprene sleeves. Conversely, no other tested parameters differed between knee sleeve conditions (p ≥ 0.05). The present results demonstrate that neoprene knee sleeves may function independent of tightness, relative to recommended sizing and ultimately unlike knee wraps. Furthermore, the singular benefits observed on barbell squat maximal strength potentially suggests an exercise-specific benefit yet to be fully elucidated.
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Affiliation(s)
- Steven B Machek
- Exercise and Biochemical Nutrition Laboratory, Baylor University, Waco, Texas
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas
| | - Thomas D Cardaci
- Exercise and Biochemical Nutrition Laboratory, Baylor University, Waco, Texas
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas
- Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina; and
| | - Dylan T Wilburn
- Exercise and Biochemical Nutrition Laboratory, Baylor University, Waco, Texas
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas
| | | | - Scarlett Lin Latt
- Exercise and Biochemical Nutrition Laboratory, Baylor University, Waco, Texas
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas
| | - Dillon R Harris
- Exercise and Biochemical Nutrition Laboratory, Baylor University, Waco, Texas
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas
| | - Darryn S Willoughby
- Exercise and Biochemical Nutrition Laboratory, Baylor University, Waco, Texas
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas
- Mayborn College of Health Sciences, School of Exercise and Sport Science, University of Mary Hardin-Baylor, Belton, Texas
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Dickerson LC, Peebles AT, Moskal JT, Miller TK, Queen RM. Physical Performance Improves With Time and a Functional Knee Brace in Athletes After ACL Reconstruction. Orthop J Sports Med 2020; 8:2325967120944255. [PMID: 32851108 PMCID: PMC7425272 DOI: 10.1177/2325967120944255] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 02/24/2020] [Indexed: 12/23/2022] Open
Abstract
Background: Athletes who return to sport (RTS) after anterior cruciate ligament reconstruction (ACLR) often have reduced physical performance and a high reinjury rate. Additionally, it is currently unclear how physical performance measures can change during the RTS transition and with the use of a functional knee brace. Purpose/Hypothesis: The purpose of this study was to examine the effects of time since surgery (at RTS and 3 months after RTS) and of wearing a brace on physical performance in patients who have undergone ACLR. We hypothesized that physical performance measures would improve with time and would not be affected by brace condition. Study Design: Controlled laboratory study. Methods: A total of 28 patients who underwent ACLR (9 males, 19 females) completed physical performance testing both after being released for RTS and 3 months later. Physical performance tests included the modified agility t test (MAT) and vertical jump height, which were completed with and without a knee brace. A repeated-measures analysis of variance determined the effect of time and bracing on performance measures. Results: The impact of the knee brace was different at the 2 time points for the MAT side shuffle (P = .047). Wearing a functional knee brace did not affect any other physical performance measure. MAT times improved for total time (P < .001) and backpedal (P < .001), and vertical jump height increased (P = .002) in the 3 months after RTS. Conclusion: The present study showed that physical performance measures of agility and vertical jump height improved in the first 3 months after RTS. This study also showed that wearing a knee brace did not hinder physical performance. Clinical Relevance: Wearing a functional knee brace does not affect physical performance, and therefore a brace could be worn during the RTS transition without concern. Additionally, physical performance measures may still improve 3 months past traditional RTS, therefore justifying delayed RTS.
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Affiliation(s)
- Laura C Dickerson
- Kevin P. Granata Biomechanics Lab, Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, Virginia, USA
| | - Alexander T Peebles
- Kevin P. Granata Biomechanics Lab, Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, Virginia, USA
| | - Joseph T Moskal
- Department of Orthopaedic Surgery, Virginia Tech Carilion School of Medicine, Roanoke, Virginia, USA
| | - Thomas K Miller
- Department of Orthopaedic Surgery, Virginia Tech Carilion School of Medicine, Roanoke, Virginia, USA
| | - Robin M Queen
- Kevin P. Granata Biomechanics Lab, Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, Virginia, USA.,Department of Orthopaedic Surgery, Virginia Tech Carilion School of Medicine, Roanoke, Virginia, USA
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Meredith SJ, Rauer T, Chmielewski TL, Fink C, Diermeier T, Rothrauff BB, Svantesson E, Hamrin Senorski E, Hewett TE, Sherman SL, Lesniak BP. Return to sport after anterior cruciate ligament injury: Panther Symposium ACL Injury Return to Sport Consensus Group. Knee Surg Sports Traumatol Arthrosc 2020; 28:2403-2414. [PMID: 32347344 DOI: 10.1007/s00167-020-06009-1] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 04/16/2020] [Indexed: 01/07/2023]
Abstract
PURPOSE A precise and consistent definition of return to sport (RTS) after anterior cruciate ligament (ACL) injury is lacking, and there is controversy surrounding the process of returning patients to sports and their previous activity level. The aim of the Panther Symposium ACL Injury RTS Consensus Group was to provide a clear definition of RTS and description of the RTS continuum, as well as to provide clinical guidance on RTS testing and decision-making. METHODS An international, multidisciplinary group of ACL experts convened as part of a consensus meeting. Consensus statements were developed using a modified Delphi method. Literature review was performed to report the supporting evidence. RESULTS Key points include that RTS is characterized by achievement of the pre-injury level of sport and involves a criteria-based progression from return to participation to return to sport, and ultimately return to performance. Purely time-based RTS decision-making should be abandoned. Progression occurs along a RTS continuum with decision-making by a multidisciplinary group that incorporates objective physical examination data and validated and peer-reviewed RTS tests, which should involve functional assessment as well as psychological readiness. Consideration should be given to biological healing, contextual factors and concomitant injuries. CONCLUSION The resultant consensus statements and scientific rationale aim to inform the reader of the complex process of RTS after ACL injury that occurs along a dynamic continuum. Research is needed to determine the ideal RTS test battery, the best implementation of psychological readiness testing and methods for the biologic assessment of healing and recovery. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Sean J Meredith
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD, USA.
- UPMC Freddie Fu Sports Medicine Center, Department of Orthopaedic Surgery, University of Pittsburgh, 3200 S Water St, Pittsburgh, 15203, PA, USA.
| | - Thomas Rauer
- UPMC Freddie Fu Sports Medicine Center, Department of Orthopaedic Surgery, University of Pittsburgh, 3200 S Water St, Pittsburgh, 15203, PA, USA
- Department of Trauma Surgery, University Hospital Zurich, Zurich, Switzerland
| | | | - Christian Fink
- Gelenkpunkt-Sports and Joint Surgery Innsbruck, Innsbruck, Austria
- Research Unit for Orthopaedic Sports Medicine and Injury Prevention (OSMI), UMIT, Hall in Tirol, Austria
| | - Theresa Diermeier
- Department of Sportorthopedics, Klinikum rechts der Isar Technische Universitat Munchen, Munchen, Germany
| | - Benjamin B Rothrauff
- UPMC Freddie Fu Sports Medicine Center, Department of Orthopaedic Surgery, University of Pittsburgh, 3200 S Water St, Pittsburgh, 15203, PA, USA
| | - Eleonor Svantesson
- Department of Orthopedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Sport Trauma Research Center, Gothenburg, Sweden
| | - Eric Hamrin Senorski
- Gothenburg Sport Trauma Research Center, Gothenburg, Sweden
- Department of Health and Rehabilitation, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | | | - Seth L Sherman
- Department of Orthopaedic Surgery, Stanford Medicine, Stanford, CA, USA
| | - Bryson P Lesniak
- UPMC Freddie Fu Sports Medicine Center, Department of Orthopaedic Surgery, University of Pittsburgh, 3200 S Water St, Pittsburgh, 15203, PA, USA
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Meredith SJ, Rauer T, Chmielewski TL, Fink C, Diermeier T, Rothrauff BB, Svantesson E, Hamrin Senorski E, Hewett TE, Sherman SL, Lesniak BP, Bizzini M, Chen S, Cohen M, Villa SD, Engebretsen L, Feng H, Ferretti M, Fu FH, Imhoff AB, Kaeding CC, Karlsson J, Kuroda R, Lynch AD, Menetrey J, Musahl V, Navarro RA, Rabuck SJ, Siebold R, Snyder-Mackler L, Spalding T, van Eck C, Vyas D, Webster K, Wilk K. Return to Sport After Anterior Cruciate Ligament Injury: Panther Symposium ACL Injury Return to Sport Consensus Group. Orthop J Sports Med 2020; 8:2325967120930829. [PMID: 32647735 PMCID: PMC7328222 DOI: 10.1177/2325967120930829] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 04/20/2020] [Indexed: 12/28/2022] Open
Abstract
Background A precise and consistent definition of return to sport (RTS) after anterior cruciate ligament (ACL) injury is lacking, and there is controversy surrounding the process of returning patients to sport and their previous activity level. Purpose The aim of the Panther Symposium ACL Injury Return to Sport Consensus Group was to provide a clear definition of RTS after ACL injury and a description of the RTS continuum as well as provide clinical guidance on RTS testing and decision-making. Study Design Consensus statement. Methods An international, multidisciplinary group of ACL experts convened as part of a consensus meeting. Consensus statements were developed using a modified Delphi method. Literature review was performed to report the supporting evidence. Results Key points include that RTS is characterized by achievement of the preinjury level of sport and involves a criteria-based progression from return to participation to RTS and, ultimately, return to performance. Purely time-based RTS decision-making should be abandoned. Progression occurs along an RTS continuum, with decision-making by a multidisciplinary group that incorporates objective physical examination data and validated and peer-reviewed RTS tests, which should involve functional assessment as well as psychological readiness. Consideration should be given to biological healing, contextual factors, and concomitant injuries. Conclusion The resultant consensus statements and scientific rationale aim to inform the reader of the complex process of RTS after ACL injury that occurs along a dynamic continuum. Research is needed to determine the ideal RTS test battery, the best implementation of psychological readiness testing, and methods for the biological assessment of healing and recovery.
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Affiliation(s)
- Sean J Meredith
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Thomas Rauer
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Terese L Chmielewski
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Christian Fink
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Theresa Diermeier
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Benjamin B Rothrauff
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Eleonor Svantesson
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Eric Hamrin Senorski
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Timothy E Hewett
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Seth L Sherman
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Bryson P Lesniak
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | | | - Mario Bizzini
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Shiyi Chen
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Moises Cohen
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Stefano Della Villa
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Lars Engebretsen
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Hua Feng
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Mario Ferretti
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Freddie H Fu
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Andreas B Imhoff
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Christopher C Kaeding
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Jon Karlsson
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Ryosuke Kuroda
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Andrew D Lynch
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Jacques Menetrey
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Volker Musahl
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Ronald A Navarro
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Stephen J Rabuck
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Rainer Siebold
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Lynn Snyder-Mackler
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Tim Spalding
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Carola van Eck
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Dharmesh Vyas
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Kate Webster
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Kevin Wilk
- Investigation performed at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
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The Effect of Functional Knee Braces on Muscular Contributions to Joint Rotational Stiffness in Anterior Cruciate Ligament-Deficient and -Reconstructed Patients. J Appl Biomech 2019; 35:344-352. [PMID: 31541064 DOI: 10.1123/jab.2018-0227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 05/15/2019] [Accepted: 06/25/2019] [Indexed: 11/18/2022]
Abstract
Functional knee braces are frequently prescribed by physicians to ameliorate the function of individuals with anterior cruciate ligament (ACL) injuries. These braces have been shown in the literature to potentially enhance knee stability by augmenting muscle activation patterns and the timing of muscle response to perturbations. However, very few techniques are available in the literature to quantify how those modifications in lower-limb muscle activity influence stability of the knee. The aim of the present study was to quantify the effect of an off-the-shelf functional knee brace on muscle contributions to knee joint rotational stiffness in ACL-deficient and ACL-reconstructed patients. Kinematic, electromyography, and kinetic data were incorporated into an electromyography-driven model of the lower extremity to calculate individual and total muscle contributions to knee joint rotational stiffness about the flexion-extension axis, for 4 independent variables: leg condition (contralateral uninjured, unbraced ACL injured, and braced ACL injured); knee flexion (5°-10°, 20°-25°, and 30°-35°); squat stability condition (stable and unstable); and injury status (ACL deficient and ACL reconstructed). Participants had significantly higher (P < .05, η2 = .018) total knee joint rotational stiffness values while wearing the brace compared with the control leg. A 2-way interaction effect between stability and knee flexion (P < .05, η2 = .040) for total joint rotational stiffness was also found.
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Ramstrand N, Gjøvaag T, Starholm IM, Rusaw DF. Effects of knee orthoses on kinesthetic awareness and balance in healthy individuals. J Rehabil Assist Technol Eng 2019; 6:2055668319852537. [PMID: 31428444 PMCID: PMC6683322 DOI: 10.1177/2055668319852537] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 05/02/2019] [Indexed: 11/17/2022] Open
Abstract
Introduction Conflicting evidence exists regarding the effects of knee orthoses on proprioception. One belief is that pressure applied by orthoses heightens kinesthetic awareness and that this affects balance. This study aimed to investigate the effects of two different orthosis designs on kinesthetic awareness and balance in healthy individuals. Methods Twenty individuals (13 women) participated in this case series study. Each was tested wearing 1/no orthosis, 2/soft elastic orthosis and 3/non-elastic jointed orthosis. Pressure under orthoses was recorded. Kinesthetic awareness was investigated by testing joint position sense and threshold to detection of passive motion. Balance was tested using a modified sensory organization test. Results Non-elastic jointed orthoses applied the greatest pressure to the knee. With non-elastic jointed orthoses, threshold to detection of passive motion was significantly poorer for pooled results (p = 0.02) and when the start position of the knee was 70° (mean threshold = 0.6°, 0.6°, 0.7° for no-orthosis, elastic and jointed-orthoses; p = 0.03). No major differences were observed in JPS or balance and correlation between proprioception and balance was poor. Conclusions There may be a limit to the amount of pressure that should be applied to the knee joint by an orthosis. Exceeding this limit may compromise kinesthetic awareness.
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Affiliation(s)
- Nerrolyn Ramstrand
- CHILD Research Group, Department of Rehabilitation, School of Health and Welfare, Jönköping University, Jönköping, Sweden
| | - Terje Gjøvaag
- KiM Research Group, Department of Occupational Therapy, Prosthetics and Orthotics, Oslo Metropolitan University, Oslo, Norway
| | - Inger Marie Starholm
- KiM Research Group, Department of Occupational Therapy, Prosthetics and Orthotics, Oslo Metropolitan University, Oslo, Norway
| | - David F Rusaw
- ADULT Research Group, Department of Rehabilitation, School of Health and Welfare, Jönköping, Sweden
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Bodendorfer BM, Arnold NR, Shu HT, Leary EV, Cook JL, Gray AD, Guess TM, Sherman SL. Do neoprene sleeves and prophylactic knee braces affect neuromuscular control and cutting agility? Phys Ther Sport 2019; 39:23-31. [PMID: 31203143 DOI: 10.1016/j.ptsp.2019.05.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 05/09/2019] [Accepted: 05/23/2019] [Indexed: 01/13/2023]
Abstract
OBJECTIVES To evaluate the effects of neoprene sleeves (NSs) and prophylactic knee braces (PKBs) on neuromuscular control and cutting agility. DESIGN Markerless motion-capture technology tracked subjects (1) without a brace as a control (2) with NSs and (3) with PKBs during single-leg drop vertical jump (SLDVJ), single-leg squat (SLS), Y-excursion, and cutting movements. Movements were recorded five times per bracing condition in three different sessions. SETTING University laboratory. PARTICIPANTS Ten healthy, active subjects (5 male, 5 female; age range, 22-26 years). MAIN OUTCOME MEASURES Degrees of motion and time to completion. RESULTS Use of NSs and PKBs reduced subjects' hip internal rotation in the loading phase of SLDVJ (p = 0.026, 0.02) and SLS (p = 0.005, <0.001), reduced knee flexion in the loading phase of SLDVJ (p = 0.038, <0.001), and reduced knee frontal plane abduction (FPA) with SLS (p = 0.015, 0.024) and Y-excursion (p = 0.002, 0.005) compared to control. Use of PKBs decreased subjects' hip internal rotation in the Y-excursion (p = 0.024) and reduced knee FPA in the SLDVJ loading phase (p = 0.014) compared to control. There was no difference in cutting agility for either group (p = 0.145, 0.347). CONCLUSION Both NSs and PKBs positively impacted neuromuscular control without impacting cutting agility.
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Affiliation(s)
- Blake M Bodendorfer
- Department of Orthopaedic Surgery, MedStar Georgetown University Hospital, Washington, DC, USA.
| | - Nicholas R Arnold
- Department of Internal Medicine, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
| | - Henry T Shu
- Department of Orthopaedic Surgery, MedStar Georgetown University Hospital, Washington, DC, USA
| | - Emily V Leary
- University of Missouri Health Care, Columbia, MO, USA
| | - James L Cook
- University of Missouri Health Care, Columbia, MO, USA
| | - Aaron D Gray
- University of Missouri Health Care, Columbia, MO, USA
| | - Trent M Guess
- University of Missouri Health Care, Columbia, MO, USA
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Effects of a Prophylactic Knee Sleeve on Anterior Cruciate Ligament Loading During Sport-Specific Movements. J Sport Rehabil 2019; 28:1-7. [PMID: 28714786 DOI: 10.1123/jsr.2017-0079] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 05/15/2017] [Accepted: 06/18/2017] [Indexed: 11/18/2022]
Abstract
CONTEXT Prophylactic knee bracing is extensively utilized in athletic populations to reduce the high risk from knee injuries, but its role in the attenuation of anterior cruciate ligament (ACL) pathologies is not well understood. OBJECTIVE The aim of this investigation was to explore the effects of a prophylactic knee sleeve on ACL loading parameters linked to the etiology of injury in recreational athletes. SETTING Laboratory. DESIGN Repeated measures. PARTICIPANTS Thirteen healthy male recreational athletes. INTERVENTION Participants performed run, cut, and single-leg hop movements under 2 conditions; prophylactic knee sleeve and no sleeve. MAIN OUTCOME MEASURES Biomechanical data were captured using an 8-camera 3D motion capture system and a force platform. Peak ACL force, average ACL load rate, and instantaneous ACL load rate were quantified using a musculoskeletal modeling approach. RESULTS The results showed that both average and instantaneous ACL load rates were significantly reduced when wearing the knee sleeve in the hop (sleeve = 612.45/1286.39 N/kg/s and no sleeve = 743.91/1471.42 N/kg/s) and cut (sleeve = 222.55/1058.02 N/kg/s and no sleeve = 377.38/1183.01 N/kg/s) movements. CONCLUSIONS Given the biomechanical association between ACL loading and the etiology of ACL injuries, it is proposed that athletes may be able to attenuate their risk from injury during cut and hop movements through utilization of a prophylactic knee sleeve.
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Królikowska A, Sikorski Ł, Czamara A, Reichert P. Effects of Postoperative Physiotherapy Supervision Duration on Clinical Outcome, Speed, and Agility in Males 8 Months After Anterior Cruciate Ligament Reconstruction. Med Sci Monit 2018; 24:6823-6831. [PMID: 30257259 PMCID: PMC6354637 DOI: 10.12659/msm.912162] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND We investigated whether the duration of postoperative physiotherapy supervision by a physiotherapist affects clinical outcome, speed, and agility in males 8 months after anterior cruciate ligament reconstruction (ACLR). MATERIAL AND METHODS From a group of 248 patients 8 months after ACLR, we used strict exclusion criteria to identify 2 groups of men who were well trained and frequently participated in sports pre-injury, with different durations of postoperative physiotherapy supervision: Group I (n=15; x=27.40 weeks) and Group II (n=15; x=8.07 weeks). Group III (n=30) were controls. Clinical evaluation (manual ligament assessment, knee joint and thigh circumferences, range of motion), pain assessment, and run test with maximal speed and change-of-direction manoeuvres, was performed. RESULTS No clinically significant abnormalities were noted in any studied groups in terms of clinical and pain assessments. The time of the run test was significantly increased in Group II (x=23.77 s) compared with Group I (x=21.76 s) and Group III (x=21.15 s). The average speed was significantly reduced in Group II (x=2.05 m*s-1) compared with Group I (x=2.22 m*s-1) and Group III (x=2.27 m*s-1). The duration of physiotherapy supervision was significantly negatively correlated with the time results of the run test (r=-0.353; p=0.046) and positively correlated with the average speed (r=0.360; p=0.049). CONCLUSIONS Both shorter and longer duration of postoperative physiotherapy supervision resulted in successful clinical outcomes in terms of studied features in males 8 months after ACLR. Nevertheless, longer physiotherapy supervision was more effective for improving speed and agility to the level of healthy individuals.
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Affiliation(s)
| | - Łukasz Sikorski
- The Center of Rehabilitation and Medical Education, Wrocław, Poland
| | - Andrzej Czamara
- Department of Physiotherapy, The College of Physiotherapy in Wrocław, Wrocław, Poland
| | - Paweł Reichert
- Division of Sports Medicine, Department of Physiotherapy, Faculty of Health Sciences, Wrocław Medical University, Wrocław, Poland
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Effects of Subsensory Noise and Fatigue on Knee Landing and Cross-over Cutting Biomechanics in Male Athletes. J Appl Biomech 2018; 34:205-210. [PMID: 29364038 DOI: 10.1123/jab.2017-0180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The objective of this study was to examine the effects of subsensory noise and fatigue on knee biomechanics during the athletic task of landing followed by cross-over cutting. A total of 32 healthy male athletes participated in the study. They were evenly divided into 2 groups: no fatigue group and fatigue group. Fatigue was induced to the lower extremity by a repetitive squatting exercise in the fatigue group. Subsensory noise was generated by linear miniature vibrators bilaterally placed around the knee joints. During data collection, the participants were instructed to perform landing followed by cross-over cutting in both the subsensory on and off conditions. Dependent variables were selected to assess knee biomechanics in the phases of landing and cross-over cutting, separately. Results showed that fatigue resulted in larger knee flexion during landing and larger knee internal rotation during cross-over cutting. Subsensory noise was found to reduce knee rotation impulse during cross-over cutting. These findings suggest that cross-over cutting is more dangerous than landing in the fatigue condition, and subsensory noise may lead to changes in knee biomechanics consistent with reduced risk of anterior cruciate ligament injuries, but the changes may be task-specific.
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Do Knee Braces Prevent Ski Knee Injuries? Asian J Sports Med 2017. [DOI: 10.5812/asjsm.58678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Hangalur G, Brenneman E, Nicholls M, Bakker R, Laing A, Chandrashekar N. Can a knee brace reduce the strain in the anterior cruciate ligament? A study using combined in vivo/in vitro method. Prosthet Orthot Int 2016; 40:394-9. [PMID: 25805754 DOI: 10.1177/0309364615574167] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 01/09/2015] [Indexed: 02/03/2023]
Abstract
BACKGROUND AND AIM It is unknown whether prophylactic knee braces can reduce the strain in the anterior cruciate ligament during dynamic activities. TECHNIQUE An athlete, who had characteristics of high anterior cruciate ligament injury risk, was chosen. A motion capture system (Optotrak Certus; Northern Digital, Waterloo, ON, Canada) was used to record dynamic trials during drop-landing activity of this subject with and without the knee brace being worn. A musculoskeletal model was used to estimate the muscle forces during this activity. A dynamic knee simulator then applied kinematics and muscle forces on a cadaver knee with and without the brace mounted on it. The anterior cruciate ligament strain was measured. DISCUSSION The peak strain in the anterior cruciate ligament was substantially lower for the braced (7%) versus unbraced (20%) conditions. Functional knee braces could decrease the strain in the anterior cruciate ligament during dynamic activities in a high-risk subject. However, the reduction seems to be a result of altered muscle firing pattern due to the brace. CLINICAL RELEVANCE Prophylactic knee brace could reduce the strain in the anterior cruciate ligament of high-risk subjects during drop-landing through altered muscle firing pattern associated with brace wear. This could help reduce the anterior cruciate ligament injury risk.
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Affiliation(s)
| | | | | | - Ryan Bakker
- University of Waterloo, Waterloo, ON, Canada
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Abstract
In athletes, significant advances in anterior cruciate ligament reconstruction techniques and rehabilitation have led to improved surgical outcomes and increased expectations for return to play. Although an expeditious return to sport has become an achievable and often realistic goal, the factors that most influence safe, timely, and successful return to play remain unknown. The literature offers mainly anecdotal evidence to guide the team physician in the decision-making process, with a paucity of criteria and consensus guidelines available to help determine return to sport. Attempts have been made to introduce criteria-based progression in the rehabilitation process, but validation of subjective and objective criteria has been difficult. Nevertheless, several pertinent factors in the preoperative, intraoperative, and postoperative periods may affect return to play following anterior cruciate ligament reconstruction. Further research is warranted to validate reliable, consensus guidelines with objective criteria to facilitate the return to play process.
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Brucker PU, Katzmaier P, Olvermann M, Huber A, Waibel K, Imhoff AB, Spitzenpfeil P. [Recreational and competitive alpine skiing. Typical injury patterns and possibilities for prevention]. Unfallchirurg 2015; 117:24-32. [PMID: 24445993 DOI: 10.1007/s00113-013-2464-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Alpine skiing is the most popular winter sport discipline in Germany and is performed by more than 4 million recreational sportsmen and ski racing athletes. Compared to other sports, however, the injury rate in alpine skiing is quite high. Especially the knee joint is the most commonly injured area of the musculoskeletal system. Knee injuries are classified as severe in a high percentage of cases. In this review article, epidemiologic data and typical injury patterns in recreational alpine skiing and in competitive alpine ski racing are compared. In addition, the potentials of preventive methods in alpine skiing are presented and evaluated with a special focus on orthotic devices and protection wear as injury prevention equipment.
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Affiliation(s)
- P U Brucker
- Abteilung und Poliklinik für Sportorthopädie, Klinikum rechts der Isar, Technische Universität München, Ismaninger Straße 22, 81675, München, Deutschland,
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Hosp S, Bottoni G, Heinrich D, Kofler P, Hasler M, Nachbauer W. A pilot study of the effect of Kinesiology tape on knee proprioception after physical activity in healthy women. J Sci Med Sport 2014; 18:709-13. [PMID: 25270548 DOI: 10.1016/j.jsams.2014.09.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 09/01/2014] [Accepted: 09/04/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVES Kinesiology tape has gained significant popularity in recent years and is widely used as an adjunct for treatment and prevention of musculoskeletal injuries. However, evidence regarding its influence on knee proprioception is scarce. The purpose of this study was to evaluate the effect of Kinesiology tape on knee proprioception after physical activity in healthy women. It was hypothesized that Kinesiology tape enhances knee proprioception. DESIGN Longitudinal analysis, pretest-posttest design. METHODS Twelve young women with healthy knees were tested for knee proprioception without the use of Kinesiology tape and wearing Kinesiology tape at the knee. The joint position sense was measured at the start and after a 30-min uphill walking protocol on a treadmill. Outcome was the knee angle deviation. RESULTS No significant difference of proprioceptive performance between the application with Kinesiology tape and without Kinesiology tape was found after uphill walking (p > 0.05). However, when the participants' results for knee angle deviation were graded into good (< 6.1°) and poor ( > 6.1°), Kinesiology tape significantly enhanced those with poor proprioceptive ability after uphill walking, compared to the untaped knee (p = 0.002). CONCLUSIONS This study has shown that the application of Kinesiology tape did not improve knee proprioception in a group of healthy young women. However, it also has demonstrated that Kinesiology tape provided significant proprioceptive enhancement at the knee joint after uphill walking in healthy women with poor proprioceptive ability. This may support its use in sports medicine for preventing knee injuries.
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Affiliation(s)
- Simona Hosp
- Centre of Technology of Ski and Alpine Sports, Innsbruck, Austria.
| | - Giuliamarta Bottoni
- Centre of Technology of Ski and Alpine Sports, Innsbruck, Austria; Department of Sport Science, University of Innsbruck, Austria
| | - Dieter Heinrich
- Centre of Technology of Ski and Alpine Sports, Innsbruck, Austria
| | - Philipp Kofler
- Centre of Technology of Ski and Alpine Sports, Innsbruck, Austria; Department of Sport Science, University of Innsbruck, Austria
| | - Michael Hasler
- Centre of Technology of Ski and Alpine Sports, Innsbruck, Austria
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Kaplan Y, Myklebust G, Nyska M, Palmanovich E, Victor J, Witvrouw E. The prevention of injuries in contact flag football. Knee Surg Sports Traumatol Arthrosc 2014; 22:26-32. [PMID: 23250199 DOI: 10.1007/s00167-012-2335-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Accepted: 11/27/2012] [Indexed: 10/27/2022]
Abstract
PURPOSE American flag football is a non-tackle, contact sport with many moderate to severe contact-type injuries reported. A previous prospective injury surveillance study by the authors revealed a high incidence of injuries to the fingers, face, knee, shoulder and ankle. The objectives of the study were to conduct a pilot-prospective injury prevention study in an attempt to significantly reduce the incidence and the severity of injuries as compared to a historical cohort, as well as to provide recommendations for a future prospective injury prevention study. METHODS A prospective injury prevention study was conducted involving 724 amateur male (mean age: 20.0 ± 3.1 years) and 114 female (mean age: 21.2 ± 7.2 years) players. Four prevention measures were implemented: the no-pocket rule, self-fitting mouth guards, ankle braces (for those players with recurrent ankle sprains) and an injury treatment information brochure. An injury surveillance questionnaire was administered to record all time-loss injuries sustained in game sessions. RESULTS There was a statistically significant reduction in the number of injured players, the number of finger/hand injuries, the incidence rate and the incidence proportion between the two cohorts (p < 0.05). CONCLUSIONS This one-season pilot prevention study has provided preliminary evidence that finger/hand injuries can be significantly reduced in flag football. Prevention strategies for a longer, prospective, randomised-controlled injury prevention study should include the strict enforcement of the no-pocket rule, appropriate head gear, the use of comfortable-fitting ankle braces and mouth guards, and changing the blocking rules of the game.
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Affiliation(s)
- Yonatan Kaplan
- Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Ghent, Belgium,
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The effect of knee brace and knee sleeve on the proprioception of the knee in young non-professional healthy sportsmen. Knee 2013; 20:490-2. [PMID: 23726648 DOI: 10.1016/j.knee.2013.05.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 04/29/2013] [Accepted: 05/01/2013] [Indexed: 02/02/2023]
Abstract
BACKGROUND Proprioception has been defined as the capacity to feel the position of a joint in space as sensed by the central nervous system. Prophylactic knee braces are supposed to help in knee injury prevention not just with a mechanical support of the joint but also improving proprioception. The main aim of this study was to determine the effects of a knee brace and a knee sleeve on knee proprioception. The secondary aim was to determine if different starting angles of the knee and different movement directions influence knee proprioception. METHODS We tested a group of twenty healthy male sport students without knee injuries. They were tested with the brace, with the sleeve and without support. The threshold of detection of passive knee movement with a starting knee angle of 30° and 60°, both in flexion and extension was determined. RESULTS We did not find any statistically significant change in the threshold of detection of passive knee movement wearing the brace or the sleeve compared to the unsupported condition (p=0.462, α=0.05). We found a significantly lower proprioceptive sensitivity starting at the more flexed knee angle (p=0.005, α=0.05) and moving in extension than in the other test situations (p=0.001, α=0.05). CONCLUSION Movement direction and starting position appear to influence the threshold of detection of passive knee movement. The results of this study also suggest that knee supports do not influence either positively or negatively knee proprioception of uninjured active subjects.
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Bodendorfer BM, Anoushiravani AA, Feeley BT, Gallo RA. Anterior cruciate ligament bracing: evidence in providing stability and preventing injury or graft re-rupture. PHYSICIAN SPORTSMED 2013; 41:92-102. [PMID: 24113707 DOI: 10.3810/psm.2013.09.2020] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Ligamentous knee injuries are common and costly, both in financial terms and time missed from work and recreational activities. Furthermore, ligamentous injuries appear to predispose patients to future osteoarthritis and other morbidities. Therefore, prevention strategies are important in limiting the potential impact of these injuries. Knee braces are one of the most often prescribed devices in the billion-dollar orthotic industry. Despite widespread use of prophylactic and functional knee braces, the evidence supporting their efficacy in reducing and/or preventing injury remains limited. Knee braces have been shown to be more effective in preventing medial collateral ligament injuries than anterior cruciate ligament injuries in both cadaveric and clinical studies. The use of functional braces after anterior cruciate ligament reconstruction has been supported and refuted in both postoperative and long-term studies.
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Affiliation(s)
- Blake M Bodendorfer
- Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, CA
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Mortaza N, Abu Osman NA, Jamshidi AA, Razjouyan J. Influence of functional knee bracing on the isokinetic and functional tests of anterior cruciate ligament deficient patients. PLoS One 2013; 8:e64308. [PMID: 23717593 PMCID: PMC3662704 DOI: 10.1371/journal.pone.0064308] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Accepted: 04/11/2013] [Indexed: 12/04/2022] Open
Abstract
Use of functional knee braces has been suggested to provide protection and to improve kinetic performance of the knee in Anterior cruciate ligament(ACL)-injured patients. However, many athletes might refrain from wearing the braces because of the fear of performance hindrance in the playing field. The aim of this study was to examine the effect of three functional knee brace/sleeves upon the isokinetic and functional performance of ACL-deficient and healthy subjects. Six anterior cruciate ligament deficient (29.0±5.3 yrs., 175.2±5.4 cm, and 73.0±10.0 kg) and six healthy male subjects (27.2±3.7 yrs., 176.4±6.4 cm, and 70.3±6.9 kg) were selected. The effect of a custom-made functional knee brace, and two neoprene knee sleeves, one with four metal supports and one without support were examined via the use of isokinetic and functional tests in four sets (non-braced,wearing functional knee brace,and wearing the sleeves). Cross-over hop and single leg vertical jump test were performed and jump height, and hop distance were recorded. Peak torque to body weight ratio and average power in two isokinetic velocities(60°.s−1,180°.s−1) were recorded and the brace/sleeves effect was calculated as the changes in peak torque measured in the brace/sleeves conditions, expressed as a percentage of peak torque measured in non-braced condition. Frequency content of the isokinetic torque-time curves was also analyzed. Wilcoxon signed rank test was used to compare the measured values in four test conditions within each control and ACL-deficient group,and Mann-Whitney U test was used for the comparison between the two groups. No significant differences in peak torque, average power, torque-time curve frequency content, vertical-jump and hop measurements were found within the experimental and the non-braced conditions (p>0.05). Although the examined functional knee brace/sleeves had no significant effect on the knee muscle performance, there have been some enhancement regarding the extension peak torques and power generating capacity of the ACL-deficient subjects that could be helpful in reducing the bilateral asymmetry in these patients.
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Affiliation(s)
- Niyousha Mortaza
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia.
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Al-Saeed O, Brown M, Athyal R, Sheikh M. Association of femoral intercondylar notch morphology, width index and the risk of anterior cruciate ligament injury. Knee Surg Sports Traumatol Arthrosc 2013; 21:678-82. [PMID: 22552619 DOI: 10.1007/s00167-012-2038-y] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Accepted: 04/19/2012] [Indexed: 01/12/2023]
Abstract
PURPOSE To determine the relationship between femoral notch morphology, femoral notch width index and anterior cruciate ligament tears using magnetic resonance imaging of the knee. METHODS This retrospective study was conducted on 560 patients who had magnetic resonance imaging (MRI) examinations of the knee between February 2010 and June 2011. Two morphological changes were investigated: the shape of the femoral notch and its width index. The femoral notch shape was classified into one of three types: Type A, which is a narrow (Stenotic) notch that appears narrowed from the base to the midsection as well as at the apex; Type U, in which the midsection does not taper, allowing for a wider contour to the notch than Type A; and Type W, which has the characteristics of Type U but with two apparent apices. The femoral notch width index was calculated as a ratio of central notch width and transcondylar or intercondylar width; values of 0.270 or more were considered as normal and values of 0.269 or less were considered as below normal. These measurements were correlated with the presence or absence of anterior cruciate ligament (ACL) tears. RESULTS Of 560 patients, there were 280 cases of ACL tear. Of the 560 patients, 240 had a Type A femoral notch shape and 320 had a Type U or W femoral notch shape. Of those with Type A, 73 % (176 patients) had ACL tears, and of those with Type U or W, 32 % (104 patients) had ACL tears. Statistical analysis showed that the Type A notch correlated with ACL injury (p value < 0.0001). The femoral notch width index was low in 37 % (88 subjects) with Type A notch compared with 27.5 % (88 subjects) with Type U or W notches. Of the 280 subjects with ACL tear, only 17 % (48 patients) had a reduced femoral notch index. CONCLUSION This study showed that the Type A femoral notch appears to be a risk factor for ACL injury, whereas a reduced notch index has no significant correlation to ACL injury. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Osama Al-Saeed
- Department of Radiology, Faculty of Medicine, Kuwait University, P.O.Box 24923, 13110, Safat, Kuwait.
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Abstract
OBJECTIVE To characterize the epidemiology of injuries in post-high school male and female athletes in the rapidly growing international sport of contact flag football. DESIGN Prospective injury-observational study. SETTING Kraft Stadium, Jerusalem, Israel. PARTICIPANTS A total of 1492 players, consisting of men (n = 1252, mean age, 20.49 ± 5.11) and women (n = 240, mean age, 21.32 ± 8.95 years), participated in 1028 games over a 2-season period (2007-2009). MAIN OUTCOME MEASURES All time-loss injuries sustained in game sessions were recorded by the off-the-field medical personnel and followed up by a more detailed phone injury surveillance questionnaire. RESULTS One hundred sixty-three injuries were reported, comprising 1 533 776 athletic exposures (AEs). The incidence rate was 0.11 [95% confidence interval (CI), 0.09-0.12] per 1000 AEs, and incidence proportion was 10.66% (95% CI, 9.10-12.22). Seventy-six percent of the injuries were extrinsic in nature. Thirty percent of the injuries were to the fingers, thumb, and wrist, 17% to the knee, 17% to the head/face, 13% to the ankle, and 11% to the shoulder. CONCLUSIONS Contact flag football results in a significant amount of moderate to severe injuries. These data may be used in the development of a formal American flag football injury database and in the development and implementation of a high-quality, randomized, prospective injury prevention study. This study should include the enforcement of the no-pocket rule, appropriate headgear, self-fitting mouth guards, the use of ankle braces, and changing the blocking rules of the game.
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Dai B, Herman D, Liu H, Garrett WE, Yu B. Prevention of ACL injury, part I: injury characteristics, risk factors, and loading mechanism. Res Sports Med 2012; 20:180-97. [PMID: 22742075 DOI: 10.1080/15438627.2012.680990] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The anterior cruciate ligament (ACL) injury is one of the most common injuries in sports. ACL injuries are not only costly from financial and health services consumption standpoints, but also can have devastating consequences on patients' activity levels and quality of life. Tremendous efforts have been made over the past two decades toward the goal of preventing ACL injuries. A substantial number of studies have been performed to determine the characteristics of ACL injury events, identify risk factors for ACL injury, and develop prevention strategies. The purpose of this review was to objectively summarize the current literature regarding the characteristics of ACL injury, ACL loading mechanisms, and risk factors for injury to provide a comprehensive understanding of the current state of research and how our current level of knowledge may inform clinical practice in this area.
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Affiliation(s)
- Boyi Dai
- Center for Human Movement Science, Division of Physical Therapy, University of North Carolina, Chapel Hill, North Carolina 27599, USA.
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Functional knee brace use effect on peak vertical ground reaction forces during drop jump landing. Knee Surg Sports Traumatol Arthrosc 2012; 20:2405-12. [PMID: 22293898 DOI: 10.1007/s00167-012-1911-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
PURPOSE The aim of the study was to investigate the landing strategies used by non-injured athletes while wearing functional knee braces (FKB, BR condition) during a drop jump task compared with non-injured, non-braced (NBR condition) subjects and also to ascertain whether accommodation to a FKB was possible by non-injured BR subjects. METHODS Twenty-three healthy male provincial and national basketball and field hockey athletes (age, 19.4 ± 3.0 years) were tested. Each subject was provided with a custom-fitted FKB. Five NBR testing sessions were performed over 3 days followed by five BR testing sessions also over 3 days, for a total of 17.5 h of testing per condition. Each subject performed eight trials of the drop jump task during each testing session per condition. Single-leg peak vertical ground reaction forces (PVGRF) and the time to PVGRF were recorded for each NBR and BR trail. RESULTS The BR group mean PVGRF at landing was significantly lower (1,628 ± 405 N, 2.1 ± 0.5 BW versus 1,715 ± 403 N, 2.2 ± 0.5 BW, F (1,22) = 6.83, P = 0.01) compared with NBR subjects, respectively. The group mean time to PVGRF was not statistically longer during the BR condition (F (1,22) = 0.967, P = 0.3). Further, an accommodation trend was noted as percent performance difference decreased with continued FKB use. CONCLUSIONS The significantly lower group mean PVGRF while using a FKB could keep traumatic forces from reaching the ACL until the active neuromuscular restraints are activated to provide protection to the knee joint ligaments. Also, accommodation to FKB is possible after approximately 14.0 h of brace use. The results of this paper will assist clinicians in providing information to their patients regarding a FKB ability to offer protection to an ACL-deficient knee or to address concerns about early muscle fatigue, energy expenditure, heart rate, and decrease in performance level. LEVEL OF EVIDENCE Prospective study, Level I.
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Mortaza N, Ebrahimi I, Jamshidi AA, Abdollah V, Kamali M, Abas WABW, Osman NAA. The effects of a prophylactic knee brace and two neoprene knee sleeves on the performance of healthy athletes: a crossover randomized controlled trial. PLoS One 2012. [PMID: 23185549 PMCID: PMC3503729 DOI: 10.1371/journal.pone.0050110] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Knee injury is one of the major problems in sports medicine, and the use of prophylactic knee braces is an attempt to reduce the occurrence and/or severity of injuries to the knee joint ligament(s) without inhibiting knee mobility. The aim of the present study was to examine the effect of one recently designed prophylactic knee brace and two neoprene knee sleeves upon performance of healthy athletes. Thirty-one healthy male athletes (age = 21.2 ± 1.5) volunteered as participants to examine the effect of prophylactic knee brace/sleeves on performance using isokinetic and functional tests. All subjects were tested in four conditions in a random order: 1. nonbraced (control) 2. using a neoprene knee sleeve 3. using a knee sleeve with four bilateral metal supports and 4. using a prophylactic knee brace. The study design was a crossover, randomized, controlled trial. Subjects completed single leg vertical jump, cross-over hop, and the isokinetic knee flexion and extension (at 60, 180, 300°/sec). Data were collected from the above tests and analyzed for jump height, cross-over hop distance, peak torque to body weight ratio and average power, respectively. Comparisons of these variables in the four testing conditions revealed no statistically significant difference (p>0.05). The selected prophylactic brace/sleeves did not significantly inhibit athletic performance which might verify that their structure and design have caused no complication in the normal function of the knee joint. Moreover, it could be speculated that, if the brace or the sleeves had any limiting effect, our young healthy athletic subjects were well able to generate a mean peak torque large enough to overcome this possible restriction. Further studies are suggested to investigate the long term effect of these prophylactic knee brace and sleeves as well as their possible effect on the adjacent joints to the knee.
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Affiliation(s)
- Niyousha Mortaza
- Department of Orthotics and Prosthetics, Faculty of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran.
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Trojian TH, Mohamed N. Demystifying Preventive Equipment in the Competitive Athlete. Curr Sports Med Rep 2012; 11:304-8. [DOI: 10.1249/jsr.0b013e31827558c8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Muthuri SG, McWilliams DF, Doherty M, Zhang W. History of knee injuries and knee osteoarthritis: a meta-analysis of observational studies. Osteoarthritis Cartilage 2011; 19:1286-93. [PMID: 21884811 DOI: 10.1016/j.joca.2011.07.015] [Citation(s) in RCA: 172] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Revised: 06/30/2011] [Accepted: 07/29/2011] [Indexed: 02/02/2023]
Abstract
OBJECTIVES Although knee injury has been implicated as a risk factor for the development of knee osteoarthritis (OA), there is great disparity in the magnitude of quantifiable risk. Our aim was to systematically review the relationship between history of knee injuries and knee OA. METHODS Six electronic databases were searched between August and October 2010. Relative risk estimates or odds ratio (OR) and 95% confidence intervals (95% CI) were extracted or calculated from observational studies meeting the inclusion criteria. Publication bias was determined using funnel plot and the Egger's test. Heterogeneity was examined using Cochran Q test and I(2) statistic. Random effects model was used to pool the heterogeneous results and OR was used to present the results. Subgroup analyses were performed to examine potential causes of heterogeneity. RESULTS Twenty-four observational studies (20,997 subjects) were included in the meta-analysis of which there were seven cohort, five cross-sectional and 12 case-control studies. The overall pooled OR was 4.20 (95% CI 3.11-5.66, I(2) = 81.0%). Association between history of knee injuries and knee OA was significantly different for specified injuries such as ligament or tendon injuries; meniscus damage or meniscectomy; and fracture of femur, knee or lower part of the leg (OR = 5.95, 95% 4.57-7.75), compared to unspecified injuries (OR = 3.12, 95% 2.17-4.50). CONCLUSION History of knee injury is a major risk factor for the development of knee OA irrespective of study design and definition of knee injury. As one of the few modifiable/preventable risk factors, knee injury should be part of the future prevention programme in reducing the risk of knee OA.
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Affiliation(s)
- S G Muthuri
- Academic Rheumatology, University of Nottingham, UK
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The effect of prophylactic knee bracing on performance: balance, proprioception, coordination, and muscular power. Knee Surg Sports Traumatol Arthrosc 2011; 19:1722-8. [PMID: 21468615 DOI: 10.1007/s00167-011-1491-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Accepted: 03/21/2011] [Indexed: 12/26/2022]
Abstract
PURPOSE Prophylactic knee braces are largely used in the prevention of ligament injuries, but their effectiveness on performance are still controversial. The aim of this study was to determine which brace was the most effective on functional performance. METHOD Twenty-four healthy subjects (14 men and 10 women), between the age of 18 and 22 with no prior history of lower limb injury and brace use, voluntarily participated in this study. Five different prophylactic knee braces were used. The test protocol consisted of dynamic balance, jumping performance, proprioception, coordination, and maximal force. Balance was assessed by the Y balance test; jumping performance was assessed by vertical jump and one-leg hop tests; maximal force, proprioception, and coordination were assessed by using functional squat testing. Proprioceptive test was performed by using the functional squat system machine that the participants were instructed to keep the crosshair on the line, even after the visual aid had disappeared. The subjects without a brace and with the brace by using 5 different braces (DonJoy-USA) were evaluated by five different therapists. RESULTS Hinged "H" buttress for the support of the knee brace was found to be more effective than the others in terms of balance. Drytex economy hinged knee brace had the best result in terms of proprioception and maximal force. There were no significant differences in vertical jump and one-leg hop tests (n.s.). CONCLUSION In conclusion, the hinged "H" buttress for support of the knee brace and Drytex economy hinged knee brace produced the best results on the performance parameters. The other three braces demonstrated more variable and less optimal results. Prophylactic knee braces can be used for both healthy subjects and athletes to enhance proprioception, coordination, maximal force, and balance, but it is important to choose the best proper brace to the individuals according to their fitness level. LEVEL OF EVIDENCE (Economic and decision analysis-developing an economic or decision model), Level II.
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Rishiraj N, Taunton JE, Niven B, Lloyd-Smith R, Regan W, Woollard R. Performance of healthy braced participants during aerobic and anaerobic capacity tasks. J Athl Train 2011; 46:395-402. [PMID: 21944071 DOI: 10.4085/1062-6050-46.4.395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
CONTEXT Knee braces were introduced in sports approximately 30 years ago. However, the effects of a functional knee brace (FKB) on aerobic and anaerobic performance after fatigue are unknown. OBJECTIVE To investigate whether FKB use in noninjured participants hindered performance during aerobic (Léger beep test) and anaerobic (repeated high-intensity shuttle test [RHIST]) tasks. DESIGN Crossover study. SETTING Laboratory. PATIENTS OR OTHER PARTICIPANTS Twenty-seven healthy male provincial and national basketball and field hockey athletes (age = 19.4±3.0 years, range, 17-26 years; height = 182.6±6.8 cm, range, 168-196 cm; mass = 80.0±9.1 kg, range, 66-108 kg). INTERVENTION(S) Each participant was provided a custom-fitted FKB and performed 5 nonbraced (NBR) testing sessions over 3 days, followed by 5 braced (BR) testing sessions over 3 days, for a total of 17.5 hours of testing per condition. During each testing session, participants performed 1 trial of the Léger beep test and 1 trial of the RHIST in each condition. MAIN OUTCOME MEASURE(S) Predicted maximal oxygen consumption (Vo(2) max) and time performance measures were recorded for each NBR and BR trial. RESULTS Initial performance levels were lower for BR than NBR for both the Léger beep test (BR = 44.3 mL/kg/min, NBR = 47.3 mL/kg/min; F(1,26) = 8.726; P = .007) and the RHIST (BR = 16.5 seconds, NBR = 16.2 seconds; F(1,26) = 13.98, P = .001). However, with continued FKB use, the aerobic performance measure remained higher for only the first 2 BR testing sessions (NBR = 46.9 mL/kg/min, BR = 42.4 mL/kg/min; F(3.0,79.8) = 4.95, P = .003). For the anaerobic test, no performance difference was noted between the testing conditions (NBR = 16.2 seconds, BR = 16.4 seconds; P = .7), whereas fatigue levels were lower during BR testing sessions (NBR = 33%, BR = 31%). After 14.0 hours of FKB use, performance levels were almost equal between the testing conditions (NBR = 47.6 mL/kg/min, BR = 46.1 mL/kg/min). CONCLUSIONS We found an initial decrement in performance when the FKB was used during an aerobic or anaerobic task. However, after 14.0 hours of FKB use, accommodation to the FKB was possible.
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Affiliation(s)
- Neetu Rishiraj
- ACTIN Health & Rehabilitation, Inc, Vancouver, BC, Canada.
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Abstract
The knee plays a significant role in ambulation and the activities of daily living. During the course of these activities and its role in weight bearing, the knee is susceptible to a variety of different forces and the emergency physician should be familiar with the diagnosis and treatment of the injuries that result. In addition to following basic trauma protocols, thorough neurovascular and musculoskeletal examinations should be performed and supplemented with appropriate imaging. Emergency physicians should also consider recent developments in knee anatomy and function when evaluating the patient with an acutely injured knee.
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Affiliation(s)
- Moira Davenport
- Department of Emergency Medicine, Allegheny General Hospital, Drexel University College of Medicine, 320 EN Avenue, Pittsburgh, PA 15212, USA.
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Ratzlaff CR, Liang MH. New developments in osteoarthritis. Prevention of injury-related knee osteoarthritis: opportunities for the primary and secondary prevention of knee osteoarthritis. Arthritis Res Ther 2010; 12:215. [PMID: 20815918 PMCID: PMC2945059 DOI: 10.1186/ar3113] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Where risk factors have been identified in knee and hip osteoarthritis (OA), with few exceptions, no prevention strategies have proven beneficial. The major risk factors for knee OA are advanced age, injury and obesity. However, there is limited or no evidence that they are modifiable or to what degree modifying them is effective in preventing development of knee OA or in preventing symptoms and progressive disease in persons with early OA. The notable exception is the growing epidemic of (sports) injury related knee OA. This review details the biological and clinical data indicating the efficacy of interventions targeting neuromuscular and biomechanical factors that make this subset of OA an attractive public health target, and highlights research opportunities for the future.
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Affiliation(s)
- Charles R Ratzlaff
- University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3.
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