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Chen G, Gu Z, Wang P, Qi Y, Dai J. Analysis of lower limb muscle strength characteristics of amateur runners with patellofemoral pain: A cross-sectional study. PLoS One 2024; 19:e0305141. [PMID: 38857250 PMCID: PMC11164326 DOI: 10.1371/journal.pone.0305141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 05/25/2024] [Indexed: 06/12/2024] Open
Abstract
To analyze the lower limb muscle strength characteristics of amateur runners with patellofemoral pain (PFP). Sixty amateur runners (30 in the knee pain group, 30 in the control group) underwent measurements of hip abduction strength, knee extension strength, and knee flexion strength. Additionally, the hamstring/quadriceps ratio and limb strength symmetry index were calculated for all participants. Statistical analyses were conducted using linear mixed models. The hip abduction and knee extensors strength of amateur runners with PFP was significantly lower than that of the control group. The hamstring/quadriceps ratio was significantly higher in the male knee pain group compared to the control group, while no significant difference was found between the female knee pain group and the control group. Furthermore, both the hip abduction strength symmetry index and knee extensors symmetry index were significantly lower in the knee pain group compared to the control group. Amateur runners with PFP exhibit distinct lower limb strength characteristics compared to non-knee pain runners. Additionally, differences in lower limb strength characteristics between male and female amateur runners with PFP were observed. These findings emphasize the importance of considering functional and gender differences in PFP rehabilitation training.
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Affiliation(s)
- Gangrui Chen
- Learning and Training Integration Center, Nanjing Sport Institute, Nanjing, China
| | - Zhongke Gu
- Department of Sports and Health Science, Nanjing Sport Institute, Nanjing, China
| | - Peixun Wang
- Department of Sports and Health Science, Nanjing Sport Institute, Nanjing, China
| | - Yuxuan Qi
- School of Physical Education, Performance and Sport Leadership, Springfield College, Springfield, Massachusetts, United States of America
| | - Jiansong Dai
- Department of Sports and Health Science, Nanjing Sport Institute, Nanjing, China
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2
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Selkowitz DM, Beneck GJ, Powers CM. Persons with patellofemoral pain exhibit altered hip abductor muscle recruitment while performing hip abductor exercises. Physiother Theory Pract 2024; 40:11-20. [PMID: 35880404 DOI: 10.1080/09593985.2022.2101167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 07/09/2022] [Indexed: 10/16/2022]
Abstract
INTRODUCTION Strengthening of the hip abductors has been advocated for persons with patellofemoral pain (PFP). It is not clear if these individuals activate the hip abductor muscles appropriately to achieve the desired therapeutic effects. OBJECTIVE To compare activation of the hip abductor muscles between persons with and without PFP during the performance of hip abductor exercises. METHODS Thirty-two individuals participated (12 with PFP and 20 without PFP). The average age (± standard deviation) was 29.7 ± 5.9 years for the PFP group and 28.1 ± 6.9 for the control group. Electromyographic (EMG) signals from the gluteus medius (GMED), superior gluteus maximus (SUP-GMAX), and tensor fascia lata (TFL) were obtained using fine-wire electrodes while participants performed 11 different exercises. Normalized EMG activity of each muscle was compared between groups across all exercises. RESULTS When averaged across all exercises, persons with PFP exhibited significantly greater EMG activity of TFL (mean = 25.3% MVIC; 95% CI = 19.2, 31.3) compared to those without PFP (mean = 17.6% MVIC; 95% CI = 12.8, 22.4) and significantly lower EMG activity of SUP-GMAX (mean = 16.4% MVIC; 95% CI = 11.0, 22.0) compared to those without PFP (mean = 25.4% MVIC; 95% CI = 21.0, 29.8). Persons with PFP exhibited lower EMG activity of GMED, but only for 3 out of the 11 exercises evaluated (hip abduction, hip hike, step-up). CONCLUSION Compared to persons without PFP, those with PFP exhibited activation differences during the performance of exercises used to target the hip abductors. Our results highlight the need for activation training prior to the initiation of strengthening exercises to achieve desired therapeutic effects.
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Affiliation(s)
- David M Selkowitz
- Department of Physical Therapy, MGH Institute of Health Professions, Boston, MA, USA
| | - George J Beneck
- Department of Physical Therapy, California State University, Long Beach, CA, USA
| | - Christopher M Powers
- Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, USA
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3
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Pizol GZ, Ferro Moura Franco K, Cristiane Miyamoto G, Maria Nunes Cabral C. Is there hip muscle weakness in adults with chronic non-specific low back pain? A cross-sectional study. BMC Musculoskelet Disord 2023; 24:798. [PMID: 37805476 PMCID: PMC10559475 DOI: 10.1186/s12891-023-06920-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 09/26/2023] [Indexed: 10/09/2023] Open
Abstract
BACKGROUND Patients with chronic low back pain may present changes in hip muscles. However, there is still limited and controversial evidence of the association between hip muscle weakness and chronic low back pain and whether this weakness can be assessed with functional tests. The purpose of this study was to assess whether there is hip muscle weakness in patients with non-specific chronic low back pain and whether there is an association between the positive Trendelenburg and Step-Down tests and hip muscle strength. METHODS This cross-sectional study included 40 patients with chronic low back pain and 40 healthy participants, assessed in an outpatient clinic in Vitória, Espírito Santo, Brazil. Muscle strength was measured for the hip abductors, adductors, extensors, internal rotators, and external rotators using isometric manual dynamometry and functional stability was measured by the Trendelenburg and Step-Down tests. Muscle strength was compared using the t test for independent samples and the chi-square test. The association between the tests and strength was performed using a binary logistic regression analysis. RESULTS Healthy participants showed a statistically significant greater muscle strength for the right hip abductors (mean difference [MD]: 28.1%, 95% confidence interval [CI]: 9.4 to 46.9), right adductors (MD: 18.7%, 95% CI: 6.2 to 31.2), right internal rotators (MD: 8.7%, 95% CI: 1.5 to 15.8), right extensors (MD: 21.1%, 95% CI: 6.2 to 31.2), left abductors (MD: 30.4%, 95% CI: 11.9 to 49), left adductors (MD: 18.4%, 95% CI: 3.7 to 33.2), and left extensors (MD: 21.6%, 95% CI: 6.6 to 36.5). There was no difference between groups for the positive functional tests, and there was no association between the tests and hip muscle strength. CONCLUSION Patients with chronic low back pain tend to have hip abductors, adductors, and extensors weakness. Furthermore, the functional tests should not be associated to hip muscle strength in patients with chronic low back pain.
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Affiliation(s)
- Gustavo Zanotti Pizol
- Master's and Doctoral Program in Physical Therapy, Universidade Cidade de São Paulo, Rua Cesário Galeno 475, São Paulo, 03071-000, Brazil.
| | - Katherinne Ferro Moura Franco
- Master's and Doctoral Program in Physical Therapy, Universidade Cidade de São Paulo, Rua Cesário Galeno 475, São Paulo, 03071-000, Brazil
| | - Gisela Cristiane Miyamoto
- Master's and Doctoral Program in Physical Therapy, Universidade Cidade de São Paulo, Rua Cesário Galeno 475, São Paulo, 03071-000, Brazil
| | - Cristina Maria Nunes Cabral
- Master's and Doctoral Program in Physical Therapy, Universidade Cidade de São Paulo, Rua Cesário Galeno 475, São Paulo, 03071-000, Brazil
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Mazzella N, Fox A, Saunders N, Trowell D, Vicenzino B, Bonacci J. Protocol for a randomised, assessor-blinded, parallel group feasibility trial of flat flexible school shoes for adolescents with patellofemoral pain. J Foot Ankle Res 2022; 15:52. [PMID: 35791018 PMCID: PMC9254449 DOI: 10.1186/s13047-022-00558-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 06/28/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
There are limited evidence-based treatment options for adolescents with patellofemoral pain (PFP). Flat, flexible footwear have been shown to reduce patellofemoral joint loading and pain in adults with PFP. The efficacy of this intervention in adolescents with PFP is not established. The primary aim of this study is to determine the feasibility of conducting a large-scale randomised controlled trial (RCT) of the effect of flat, flexible school footwear, when compared to traditional school footwear, in adolescents with PFP. The secondary aim is to describe changes in self-reported outcome measures for adolescents with PFP while wearing flat, flexible footwear when compared to traditional school shoes.
Methods
Twenty-four adolescents with PFP will be recruited from the community. Following baseline assessment, participants will be randomly allocated to receive either (i) flat, flexible school footwear or, (ii) traditional school footwear. Participants will wear the shoe as per school requirements throughout a 12-week intervention period. Feasibility will be assessed with (i) ≥ 75% adherence to allocated shoe wear of their total weekly school wear time, (ii) a recruitment rate of one participant per fortnight, and (iii) a dropout rate of ≤ 20%. Patient reported outcome measures will describe changes in knee pain, function, quality of life and global rating of change at 6 and 12 weeks. Descriptive statistics will be used for the primary outcomes of feasibility.
Discussion
This study will determine the feasibility of conducting a large scale RCT evaluating the effect of flat, flexible school shoes for adolescents with PFP. A full-scale study will guide evidence-based management of adolescent PFP.
Trial registration
Australian New Zealand Clinical Trials Registry reference: ACTRN12621001525875, Date registered: 9th November 2021.
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Alsaleh SA, Murphy NA, Miller SC, Morrissey D, Lack SD. Local neuromuscular characteristics associated with patellofemoral pain: A systematic review and meta-analysis. Clin Biomech (Bristol, Avon) 2021; 90:105509. [PMID: 34678670 DOI: 10.1016/j.clinbiomech.2021.105509] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 09/28/2021] [Accepted: 10/03/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Local neuromuscular deficits have been reported in people with patellofemoral pain. We synthesised the neuromuscular characteristics associated with patellofemoral pain to help identify interventional targets and potential mechanisms. METHODS Five databases were searched for local neuromuscular characteristics in case-control studies. Electromyography, flexibility, muscle performance and cross-sectional area data were derived from functional or isolated task investigations and synthesised accordingly. An evidence gap map was constructed. FINDINGS Sixty-seven studies were included. In functional tasks, electromyographic investigations showed moderate evidence of small effect for vastus medialis onset-delays relative to vastus lateralis (0.44 [0.03, 0.85]) during stepping/stair negotiation tasks, and higher biceps femoris mean excitation amplitudes (0.55 [0.06, 1.04]) in single-leg triple-hop test. In isolated tasks, we found moderate evidence of medium effect for lower Hoffman-reflex amplitude of vastus medialis (-1.12 [-1.56, -0.67]). Muscle performance investigations showed; strong evidence with medium and small effects for lower extensors concentric (-0.61 [-0.81, -0.40]) and eccentric (-0.56 [-0.79, -0.33]) strength, and moderate evidence of medium effect of lower isometric (-0.64 [-0.87, -0.41]) strength, moderate evidence with small effect for rate of force development to 30% (-0.55[-0.89, -0.21]), 60% (-0.57[-0.90, -0.25]) and medium effect to 90% (-0.76[-1.43, -0.10]) of maximum voluntary contraction, and small effect for lower flexors concentric strength (-0.46 [-0.74, -0.19]) and extensors total work (-0.48 [-0.90, -0.07]). Flexibility investigations showed tighter hamstrings (-0.57 [-0.99, -0.14]). INTERPRETATION Differences within quadriceps and hamstrings motor-control, hamstrings tightness, and quadriceps and hamstrings weakness are associated with patellofemoral pain, and can be used to guide investigations of treatment effects.
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Affiliation(s)
- S A Alsaleh
- Sports and Exercise Medicine, Queen Mary, University of London, London, United Kingdom; Medical Services Authority, Ministry of Defence, Kuwait.
| | - N A Murphy
- Sports and Exercise Medicine, Queen Mary, University of London, London, United Kingdom
| | - S C Miller
- Sports and Exercise Medicine, Queen Mary, University of London, London, United Kingdom
| | - D Morrissey
- Sports and Exercise Medicine, Queen Mary, University of London, London, United Kingdom; Physiotherapy Department, Barts Health NHS Trust, London, UK
| | - S D Lack
- Sports and Exercise Medicine, Queen Mary, University of London, London, United Kingdom; Pure Sports Medicine, London, UK
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6
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Pan W, Zhou J, Lin Y, Zhang Z, Wang Y. Elasticity of the Achilles Tendon in Individuals With and Without Plantar Fasciitis: A Shear Wave Elastography Study. Front Physiol 2021; 12:686631. [PMID: 34234693 PMCID: PMC8257043 DOI: 10.3389/fphys.2021.686631] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Accepted: 05/31/2021] [Indexed: 12/03/2022] Open
Abstract
The elastic properties of the Achilles tendon (AT) are altered in local injury or other diseases and in response to changes in mechanical load. Recently, elastography has been used to evaluate variations in tendon elastic properties, mainly among healthy individuals or athletes. Therefore, this study evaluated the biomechanical changes in ATs in individuals with and without plantar fasciitis (PF). The purposes were as follows: (1) to evaluate the passive stiffness of three regions of the AT which defined as 0 (AT0 cm), 3 (AT3 cm), and 6 cm (AT6 cm) above the calcaneal tuberosity in participants with and without PF, (2) to investigate the interplay between the passive stiffness in patients with PF and pain, (3) to detect optimal cut-off points of stiffness of the AT in assessing individuals with chronic PF, and (4) to determine the correlation between the plantar fascia thickness (PFT) and pain. This cross-sectional study included 40 participants (mean age = 51 ± 13 years). When the ankle was in a relaxed position, patients with PF experienced increased passive stiffness in AT0 cm (p = 0.006) and AT3 cm (P = 0.003), but not in the neutral position. Significant correlations were observed between pain and stiffness of AT (AT0 cm r = 0.489, P = 0.029; AT3 cm r = 487, P = 0.030; AT6 cm r = 0.471, P = 0.036), but not in the PFT (P = 0.557). Optimal cut-off stiffness was AT (452 kPa) in the relaxed ankle position. The plantar fascia of patients with PF was significantly thicker than that of the controls (P < 0.001). Findings from the present study demonstrate that tendon stiffness is a good indicator of the clinical situation of patients with PF. Monitoring passive tendon stiffness may provide additional information to assess severity of the condition and guide therapeutic. The treatment programs for PF should also be tailored to the distal AT, as conventional therapy might not be targeted to tight tendons.
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Affiliation(s)
- Weiyi Pan
- Shenzhen Dapeng New District Nan'ao People's Hospital, Branch of the First Affiliate of Shenzhen University, Shenzhen, China
| | - Jiping Zhou
- Shenzhen Dapeng New District Nan'ao People's Hospital, Branch of the First Affiliate of Shenzhen University, Shenzhen, China
| | - Yuyi Lin
- Shenzhen Dapeng New District Nan'ao People's Hospital, Branch of the First Affiliate of Shenzhen University, Shenzhen, China
| | - Zhijie Zhang
- Luoyang Orthopedics Hospital of Henan Province, Luoyang, China
| | - Yulong Wang
- ShenZhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
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Barton CJ, De Oliveira Silva D, Morton S, Collins NJ, Rathleff MS, Vicenzino B, van Middelkoop M, Crossley KM, Callaghan MJ, Selfe J, Holden S, Lack S, Macri EM, Bazett-Jones DM, Earl-Boehm JE, Riel H, Powers CM, Davis IS, Morrissey D. REPORT-PFP: a consensus from the International Patellofemoral Research Network to improve REPORTing of quantitative PatelloFemoral Pain studies. Br J Sports Med 2021; 55:1135-1143. [PMID: 34127482 DOI: 10.1136/bjsports-2020-103700] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/24/2021] [Indexed: 12/12/2022]
Abstract
Patellofemoral pain is a common and often debilitating musculoskeletal condition. Clinical translation and evidence synthesis of patellofemoral pain research are compromised by heterogenous and often inadequately reported study details. This consensus statement and associated checklist provides standards for REPORTing of quantitative PatelloFemoral Pain (REPORT-PFP) research to enhance clinical translation and evidence synthesis, and support clinician engagement with research and data collection. A three-stage Delphi process was initiated at the 2015 International Patellofemoral Research Network (iPFRN) retreat. An initial e-Delphi activity (n=24) generated topics and items, which were refined at the 2017 iPFRN retreat, and voted on prior to and following the 2019 iPFRN retreat (n=51 current and past retreat participants). Voting criteria included 'strongly recommended' (essential), 'recommended' (encouraged) and uncertain/unsure. An item was included in the checklist if ≥70% respondents voted 'recommended'. Items receiving ≥70% votes for 'strongly recommended' were labelled as such. The final REPORT-PFP checklist includes 31 items (11 strongly recommended, 20 recommended), covering (i) demographics (n=2,4); (ii) baseline symptoms and previous treatments (n=3,7); (iii) outcome measures (2,4); (iv) outcomes measure description (n=1,2); (v) clinical trial methodology (0,3) and (vi) reporting study results (n=3,0). The REPORT-PFP checklist is ready to be used by researchers and clinicians. Strong stakeholder engagement from clinical academics during development means consistent application by the international patellofemoral pain research community is likely. Checklist adherence will improve research accessibility for clinicians and enhance future evidence synthesis.
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Affiliation(s)
- Christian J Barton
- Department of Physiotherapy, Podiatry and Prosthetics and Orthotics, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia .,La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia.,Department of Surgery, St Vincent's Hospital, University of Melbourne, Melbourne, Victoria, Australia
| | - Danilo De Oliveira Silva
- Department of Physiotherapy, Podiatry and Prosthetics and Orthotics, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia.,La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia
| | - Sarah Morton
- Sports and Exercise Medicine, Queen Mary University of London, London, UK
| | - Natalie J Collins
- Physiotherapy, The University of Queensland, School of Health and Rehabilitation Sciences, St Lucia, Queensland, Australia
| | - Michael Skovdal Rathleff
- Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark.,Centre for General Practice, Aalborg University, Aalborg, Denmark.,Department of Occupational therapy and Physiotherapy, Aalborg University Hospital, Aalborg, Denmark
| | - Bill Vicenzino
- Physiotherapy, The University of Queensland, School of Health and Rehabilitation Sciences, St Lucia, Queensland, Australia
| | - Marienke van Middelkoop
- Department of General Practice, Erasmus MC Medical University Center, Rotterdam, The Netherlands
| | - Kay M Crossley
- Department of Physiotherapy, Podiatry and Prosthetics and Orthotics, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia.,La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia
| | - Michael J Callaghan
- Medical Department, Manchester United Football Club Ltd, Manchester, UK.,Manchester University NHS Foundation Trust, Manchester, UK.,Department of Health Professions, Manchester Metropolitan University, Manchester, UK
| | - James Selfe
- Department of Health Professions, Manchester Metropolitan University, Manchester, UK
| | - Sinead Holden
- Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark.,Centre for General Practice, Aalborg University, Aalborg, Denmark
| | - Simon Lack
- Sports and Exercise Medicine, Queen Mary University of London, London, UK.,Pure Sports Medicine, London, UK
| | - Erin M Macri
- Department of Orthopaedics and Sports Medicine, Erasmus MC, Rotterdam, The Netherlands
| | | | - Jennifer E Earl-Boehm
- Department of Kinesiology, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
| | - Henrik Riel
- Centre for General Practice, Aalborg University, Aalborg, Denmark
| | | | - Irene S Davis
- Spaulding National Running Center, Department of Physical Medicine and Rehabilitation, Harvard Medical School, Cambridge, Massachusetts, USA
| | - Dylan Morrissey
- Sports and Exercise Medicine, Queen Mary University of London, London, UK.,Physiotherapy Department, Barts Health NHS Trust, London, UK
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INFLUENCE OF AN ACUTE BOUT OF SELF-MYOFASCIAL RELEASE ON KNEE EXTENSION FORCE OUTPUT AND ELECTRO-MECHANICAL ACTIVATION OF THE QUADRICEPS. Int J Sports Phys Ther 2020; 15:732-743. [PMID: 33110692 DOI: 10.26603/ijspt20200732] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background In contrast to static stretching (SS), previous research has demonstrated increases in flexibility after an acute bout of self-myofascial release (SMR) without any subsequent decreases in force output. Previous research has utilized measures of surface electromyography (sEMG) and mechanomyography (MMG) to examine the influence of SS on the electrical and mechanical processes of muscle activation, respectively. However, there is a lack of research examining the potential changes in electro-mechanical muscle activation post-SMR. Purpose To examine the influence of SMR, via an acute bout of foam rolling (FR) to the vastus lateralis (VL), on the expression of knee extension force output and the inter-muscular electro-mechanical activation of the quadriceps musculature. Study Design Randomized crossover trial. Methods Twenty (10 males, 10 females) recreationally-active participants with prior FR experience completed both SMR and control (CON) testing protocols during separate testing sessions that were conducted in a randomized order 48 hours apart. During the SMR protocol, participants performed 3 sets of 60 seconds of FR over the VL portion of their quadriceps musculature, with 60 seconds of rest between sets. During the CON protocol, participants quietly sat upright for 10 minutes. Peak knee extension force output -(Forcepeak) data, as well as sEMG and MMG data from the VL and the rectus femoris (RF) were collected during maximal voluntary isometric contractions (MVICs) before and after both testing protocols. Root mean square sEMG and MMG amplitudes were calculated to represent electro-mechanical muscle activation of the VL (VL-sEMGRMS, VL-MMGRMS) and RF (RF-sEMGRMS, RF-MMGRMS) musculature. Results Repeated measures analyses of variance (RM ANOVAs) identified a significant (p < 0.05) increase in Forcepeak within the SMR protocol among males, but no change among females. No statistically significant changes in any electro-mechanical muscle activation measures were identified pre-to-post-SMR within either sex. Conclusion In contrast to the SS literature body, these results suggest that SMR does not influence the electro-mechanical aspects of muscle activation during MVICs. These results provide support for the absence of decreases in force output post-SMR, but further examination regarding the potential muscle mass influence of SMR on electro-mechanical muscle function remains warranted. Level of Evidence 2c.
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Zeitoune G, Leporace G, Batista LA, Metsavaht L, Lucareli PRG, Nadal J. Do hip strength, flexibility and running biomechanics predict dynamic valgus in female recreational runners? Gait Posture 2020; 79:217-223. [PMID: 32442897 DOI: 10.1016/j.gaitpost.2020.05.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 04/22/2020] [Accepted: 05/05/2020] [Indexed: 02/02/2023]
Abstract
BACKGOUND Dynamic valgus has been the focus of many studies to identify its association to an increased risk of running-related injuries. However, it is not known which physical and biomechanical variables are associated with this movement dysfunction. RESEARCH QUESTION This study aimed to test the correlation between strength, flexibility and biomechanical variables and dynamic valgus in female runners. METHODS Twenty-nine healthy females ran on a treadmill at 2.92 m/s and performed strength, range of motion and endurance tests. Pelvic, hip and ankle kinematics were measured with a 3D motion analysis system. Six multiple linear regression models were used to identify the ability of physical and biomechanical variables to predict excursion and peak of contralateral pelvic drop, hip adduction and internal rotation. RESULTS Contralateral pelvic drop and hip adduction were positively correlated to ankle eversion and step cadence. Hip internal rotation had a negative correlation with ankle eversion. Despite significance, predictor variables explained less than 30% of dynamic valgus variance during running. No interest variable had significant correlation with the hip strength and hip and ankle passive range of motion. SIGNIFICANCE The results showed that distal joint kinematics and spatiotemporal variables should be considered during biomechanical running analysis to identify their possible relationship with joint overload caused by dynamic valgus. Caution should be taken when linking hip disorders during running to posterolateral hip strength and stiffness, core endurance, and ankle dorsiflexion range of motion since no correlation occurred amongstthese variables in this sample of female runners.
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Affiliation(s)
- Gabriel Zeitoune
- Instituto Brasil de Tecnologias da Saúde, Rua Visconde de Pirajá 595, room 1201, Ipanema, 22410-003, Rio de Janeiro, Brazil; Programa de Engenharia Biomédica, Universidade Federal do Rio de Janeiro, Brazil
| | - Gustavo Leporace
- Instituto Brasil de Tecnologias da Saúde, Rua Visconde de Pirajá 595, room 1201, Ipanema, 22410-003, Rio de Janeiro, Brazil; Programa de Pós Graduação em Radiologia Clínica, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil.
| | - Luiz Alberto Batista
- Laboratório de Biomecânica e Comportamento Motor, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Leonardo Metsavaht
- Instituto Brasil de Tecnologias da Saúde, Rua Visconde de Pirajá 595, room 1201, Ipanema, 22410-003, Rio de Janeiro, Brazil; Programa de Pós Graduação em Radiologia Clínica, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Jurandir Nadal
- Programa de Engenharia Biomédica, Universidade Federal do Rio de Janeiro, Brazil
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Nunes GS, Barton CJ, Serrão FV. Impaired Knee Muscle Capacity Is Correlated With Impaired Sagittal Kinematics During Jump Landing in Women With Patellofemoral Pain. J Strength Cond Res 2020; 36:1264-1270. [PMID: 32341245 DOI: 10.1519/jsc.0000000000003616] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Nunes, GS, Barton, CJ, and Serrão, FV. Impaired knee muscle capacity is correlated with impaired sagittal kinematics during jump landing in women with patellofemoral pain. J Strength Cond Res XX(X): 000-000, 2020-Knee and hip muscle capacity is impaired in women with patellofemoral pain (PFP), but little is known about the rate of force development (RFD) at the knee. Impaired muscle capacity may contribute to reduced sagittal plane movement at the knee and hip during jump landing in women with PFP. This study aimed to (a) compare knee extensor muscle capacity (including RFD), and hip abductor and extensor muscle capacity between women with and without PFP; and (b) evaluate the relationship between hip/knee muscle capacity and sagittal kinematics during single-legged drop jump landing in women with PFP. Fifty-two physically active women (26 with PFP and 26 controls) participated. Rate of force development (in %/ms), isometric, concentric, and eccentric torque (in N·m·kg × 100) were evaluated using isokinetic dynamometry, and knee and hip kinematics were evaluated using three-dimensional motion capture. Compared with the control group (CG), the PFP group (PFPG) presented lower isometric (12%, PFPG = 217.2 ± 46.0; CG = 246.5 ± 38.8; p = 0.02), concentric (21%, PFPG = 133.0 ± 42.6; CG = 169.2 ± 28.8; p < 0.01), and eccentric (17%, PFPG = 172.9 ± 56.7; CG = 208.4 ± 59.4; p = 0.03) knee extension torque; lower RFD until 30% (30%, PFPG = 0.57 ± 0.27; CG = 0.83 ± 0.37; p < 0.01) and 60% (31%, PFPG = 0.47 ± 0.24; CG = 0.67 ± 0.33; p = 0.01) of maximal isometric torque; and lower concentric hip abduction (13%, PFPG = 94.7 ± 19.1; CG = 108.4 ± 17.5; p = 0.01) and extension (17%, PFPG = 134.4 ± 34.3; CG = 162.6 ± 38.0; p < 0.01) torque. Significant correlations between reduced RFD for knee extension and reduced sagittal plane knee/hip range of motion during landing were identified (r = 0.39-0.49). In conclusion, women with PFP have impaired knee extensor isometric and dynamic strength, and RFD. Impaired knee extensor RFD is associated with a stiffer landing strategy (reduced movement).
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Affiliation(s)
- Guilherme S Nunes
- Department of Physiotherapy, São Carlos Federal University, São Carlos, Brazil.,La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia
| | - Christian J Barton
- La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia.,Department of Surgery, St Vincent's Hospital, University of Melbourne, Melbourne, Australia
| | - Fábio V Serrão
- Department of Physiotherapy, São Carlos Federal University, São Carlos, Brazil
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Simultaneous ice and transcutaneous electrical nerve stimulation decrease anterior knee pain during running but do not affect running kinematics or associated muscle inhibition. Clin Biomech (Bristol, Avon) 2020; 72:1-7. [PMID: 31765839 DOI: 10.1016/j.clinbiomech.2019.11.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/08/2019] [Accepted: 11/15/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Runners often experience anterior knee pain and this pain is associated with altered running neuromechanics. The purpose of this study was to examine potential therapeutic benefits (reduced pain and restored running neuromechanics) of simultaneously applied ice and transcutaneous electrical nerve stimulation on experimentally-induced anterior knee pain. METHODS Nineteen healthy subjects completed a sham and treatment data collection session. For both sessions, hypertonic saline was infused into the infrapatellar fat pad for approximately 80 min to induce experimental anterior knee pain. Perceived pain levels were measured every two minutes and running neuromechanics were recorded at four time points: pre-pain, pain before treatment, pain immediately post-treatment, and pain 20 min post-treatment. FINDINGS The saline infusion significantly increased perceived knee pain from 0 to 2.8 cm. The ice/transcutaneous electrical nerve stimulation treatment significantly reduced perceived knee pain by 35%, six minutes after the treatment initiation. Perceived knee pain remained reduced until eight minutes after the treatment termination. The knee pain significantly decreased peak gluteus medius, vastus lateralis, and vastus medialis activation during running, each by an average of 17% plus/minus 6%; however, none of these decreases were resolved via the therapeutic treatment. Neither the knee pain nor the therapeutic treatment significantly affected peak gluteus maximus activation or peak hip adduction angle. INTERPRETATION The experimental pain model effectively produced anterior knee pain and decreased muscle activation during running. The simultaneous ice/transcutaneous electrical nerve stimulation treatment effectively decreased anterior knee pain, but did not restore running neuromechanics that were altered due to the pain.
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Nunes GS, Barton CJ, Viadanna Serrão F. Females with patellofemoral pain have impaired impact absorption during a single-legged drop vertical jump. Gait Posture 2019; 68:346-351. [PMID: 30579038 DOI: 10.1016/j.gaitpost.2018.12.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/22/2018] [Accepted: 12/08/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND Females with patellofemoral pain (PFP) have been reported to land with altered biomechanics in some, but not all studies. Kinematic alterations previously reported may indicate, and relate to potential impairments in absorbing impact. RESEARCH QUESTION To compare vertical ground reaction force (vGRF) and lower limb kinematics during single-legged drop vertical jumps in females with and without PFP; and establish the relationship between vGRF and kinematics during this task. METHODS Fifty-two physically active females (26 with PFP and 26 controls) participated in the present cross-sectional study. Peak of vGRF was evaluated during landing; and lower limb kinematics in the sagittal and frontal planes during deceleration (landing) and acceleration (take-off) phases were evaluated. RESULTS The PFP group had 11% greater vGRF (p < 0.01); and 13-24% lower hip, knee and ankle excursion in the sagittal plane during acceleration and deceleration phases (p ≤ 0.02) compared to the control group. No significant between group differences (p > 0.05) for hip, knee and ankle excursion in the frontal plane were identified. Greater impact was significantly correlated with reduced knee (r = -0.56), hip (r = -0.50) and ankle (r = -0.41) excursion in the sagittal plane during the acceleration phase in the control group, but not in the PFP group. No significant correlations were found between vGRF and kinematics variables during the deceleration phase in either group. SIGNIFICANCE Impaired ability to absorb load and reduced lower limb movement in the sagittal plane during landing in females with PFP may provide separate treatment targets during rehabilitation.
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Affiliation(s)
- Guilherme S Nunes
- Department of Physiotherapy, São Carlos Federal University, São Carlos, Brazil; La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, La Trobe University, Melbourne, Australia.
| | - Christian John Barton
- La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, La Trobe University, Melbourne, Australia; Department of Surgery, St Vincent's Hospital, University of Melbourne, Australia
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13
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Relationship Between Lower-Extremity Strength and Subjective Function in Individuals With Patellofemoral Pain. J Sport Rehabil 2018; 27:327-333. [DOI: 10.1123/jsr.2016-0177] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Objective: Evaluate the relationship between subjective knee function and lower-extremity strength in individuals with patellofemoral pain (PFP). Design: Cohort. Setting: Laboratory. Participants: Participants were 30 individuals with PFP (20 females and 10 males; 76.02 [17.88] kg, 173.04 [7.58] cm, and 24.9 [7] y). Main Outcome Measures: Subjects completed the Activities of Daily Living Scale (ADLS) and had lower-extremity hip and knee isometric strength assessed. Strength was compared between low and high subjective functioning ADLS groups. Correlations for strength and subjective function were assessed, with a linear regression utilized to determine if strength predicted subjective function. Results: Quadriceps strength was significantly greater in the high subjective function group (38.5 [13.9] percent body mass) than in the low subjective function group (27.88 [8.96] percent body mass, P = .02). Significant correlations were seen between the ADLS and all 5 lower-extremity strength measures (r = .376–.535). Quadriceps strength was a strong predictor of subjective function in those with PFP, explaining 28.6% of the total variance in the ADLS. Conclusions: Quadriceps strength was a strong predictor of subjective function when assessed by the ADLS in patients with PFP and significantly greater in those with higher subjective function. A strong relationship exists between self-reported function and lower-extremity strength, suggesting the need to evaluate and treat lower-extremity weakness.
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Earl-Boehm JE, Bolgla LA, Emory C, Hamstra-Wright KL, Tarima S, Ferber R. Treatment Success of Hip and Core or Knee Strengthening for Patellofemoral Pain: Development of Clinical Prediction Rules. J Athl Train 2018; 53:545-552. [PMID: 29893604 DOI: 10.4085/1062-6050-510-16] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
CONTEXT Patellofemoral pain (PFP) is a common injury that interferes with quality of life and physical activity. Clinical subgroups of patients may exist, one of which is caused by proximal muscle dysfunction. OBJECTIVES To develop clinical prediction rules that predict a positive outcome after either a hip and core- or knee-focused strengthening program for individuals with PFP. DESIGN Secondary analysis of data from a randomized control trial. SETTING Four university laboratories. PATIENTS OR OTHER PARTICIPANTS A total of 199 participants with PFP. INTERVENTION(S) Participants were randomly allocated to either a hip and core-focused (n = 111) or knee-focused (n = 88) rehabilitation group for a 6-week program. MAIN OUTCOME MEASURE(S) Demographics, self-reported knee pain (visual analog scale) and function (Anterior Knee Pain Scale), hip strength, abdominal muscle endurance, and hip range of motion were evaluated at baseline. Treatment success was defined as a decrease in visual analog scale score by ≥2 cm or an increase in the Anterior Knee Pain Scale score by ≥8 points or both. Bivariate relationships between the outcome (treatment success) and the predictor variables were explored, followed by a forward stepwise logistic regression to predict a successful outcome. RESULTS Patients with more pain, better function, greater lateral core endurance, and less anterior core endurance were more likely to have a successful outcome after hip and core strengthening (88% sensitivity and 54% specificity). Patients with lower weight, weaker hip internal rotation, stronger hip extension, and greater trunk-extension endurance were more likely to have success after knee strengthening (82% sensitivity and 58% specificity). CONCLUSION The patients with PFP who have more baseline pain and yet maintain a high level of function may experience additional benefit from hip and core strengthening. The clinical prediction rules from this study remain in the developmental phase and should be applied with caution until externally validated.
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Affiliation(s)
| | - Lori A Bolgla
- Department of Physical Therapy, Augusta University, GA
| | - Carolyn Emory
- Faculty of Kinesiology, University of Calgary, Alberta, Canada
| | | | - Sergey Tarima
- Department of Biostatistics, Medical College of Wisconsin, Milwaukee
| | - Reed Ferber
- Faculty of Kinesiology, University of Calgary, Alberta, Canada
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Ferrari D, Briani RV, de Oliveira Silva D, Pazzinatto MF, Ferreira AS, Alves N, de Azevedo FM. Higher pain level and lower functional capacity are associated with the number of altered kinematics in women with patellofemoral pain. Gait Posture 2018; 60:268-272. [PMID: 28712512 DOI: 10.1016/j.gaitpost.2017.07.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 07/05/2017] [Accepted: 07/07/2017] [Indexed: 02/02/2023]
Abstract
This study investigated whether women with patellofemoral pain (PFP) present kinematic alterations in proximal, local, and distal factors simultaneously, and determined the association between the number of kinematic alterations, pain level, and functional status. A three-dimensional motion analysis system was used to analyze the peak hip adduction, peak knee flexion, and peak rearfoot eversion, addressing the proximal, local, and distal factors, respectively, in fifty women. Functional status and pain level were assessed using the anterior knee pain scale (AKPS) and a visual analogic scale. Receiver operating characteristic curves were calculated to identify participants with and without kinematic alterations and the number of them was obtained for each participant. Associations between the number of kinematic alterations, pain level, and AKPS score were determined by the Pearson correlation. Results showed that 52% of women with PFP presented at least two kinematic alterations of which 24% were local/proximal, 16% local/distal, and 12% proximal/distal. Three kinematic alterations were found in 48% of the women with PFP. A strong positive correlation was found between the number of kinematic alterations and pain (r=0.78; p<0.001). A strong negative correlation was found between the number of altered kinematics and functional status (r=-0.79; p<0.001). Findings revealed that women with PFP presented at least two kinematic alterations and a higher number of kinematic alterations was associated with higher pain levels and lower functional status. Clinicians should carefully assess movement pattern of women with PFP as it could indicate a more severe condition, which is associated with a poor prognosis.
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Affiliation(s)
- Deisi Ferrari
- University of São Paulo, Post-Graduation Program Interunits Bioengineering EESC/FMRP/IQSC-USP, São Carlos, Brazil; Educational Faculty of Francisco Beltrão, Physical Therapy Department, Francisco Beltrão, Brazil.
| | - Ronaldo Valdir Briani
- University of São Paulo State, School of Science and Technology, Physical Therapy Department, Presidente Prudente, Brazil.
| | - Danilo de Oliveira Silva
- University of São Paulo State, School of Science and Technology, Physical Therapy Department, Presidente Prudente, Brazil.
| | - Marcella Ferraz Pazzinatto
- University of São Paulo State, School of Science and Technology, Physical Therapy Department, Presidente Prudente, Brazil.
| | - Amanda Schenatto Ferreira
- University of São Paulo State, School of Science and Technology, Physical Therapy Department, Presidente Prudente, Brazil.
| | - Neri Alves
- University of São Paulo, Post-Graduation Program Interunits Bioengineering EESC/FMRP/IQSC-USP, São Carlos, Brazil; University of São Paulo State, School of Science and Technology, Physical Therapy Department, Presidente Prudente, Brazil.
| | - Fábio Mícolis de Azevedo
- University of São Paulo State, School of Science and Technology, Physical Therapy Department, Presidente Prudente, Brazil.
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Spiker AM, Rotter BZ, Chang B, Mintz DN, Kelly BT. Clinical presentation of intra-articular osteoid osteoma of the hip and preliminary outcomes after arthroscopic resection: a case series. J Hip Preserv Surg 2017; 5:88-99. [PMID: 29423256 PMCID: PMC5798088 DOI: 10.1093/jhps/hnx042] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 09/26/2017] [Indexed: 01/01/2023] Open
Abstract
Intra-articular osteoid osteoma (IAOO) of the hip is a relatively rare diagnosis, but one that can closely mimic symptomatic presentation of femoroacetabular impingement (FAI). Although there are multiple case reports of osteoid osteoma (OO) in the hip, we present the largest case series of hip IAOO treated with hip arthroscopy and discuss limited patient-reported outcomes after treatment with hip arthroscopy. We retrospectively identified patients diagnosed with IAOO of the hip with confirmatory computed tomography, magnetic resonance imaging or biopsy diagnoses of OO. We analyzed lesion location, main presenting symptoms, symptom duration and treatment undertaken. For the patients who underwent hip arthroscopy for treatment of their IAOO, we reviewed patient-reported outcome scores when available. Forty patients with confirmed IAOO were identified. Thirteen underwent excision with hip arthroscopy. The most common presenting symptom was groin pain. In limited patients who had pre- and post-operative outcome scores, we found significant improvements in modified Harris Hip Score (mHHS), Hip Outcome Score-Activity of Daily Living (HOS-ADL) and international Hip Outcomes Tool (iHot33) scores. Compared with patients undergoing hip arthroscopy for FAI alone, baseline mHHS, HOS-ADL, Hip Outcome Score–Sport-Specific Subscale and iHot33 scores were almost identical. We found that the presenting symptoms of hip IAOO closely mimic symptomatic FAI, including groin pain and anterior hip pain, so it is important to keep IAOO of the hip in the differential diagnosis of hip pain. Based on our experience, arthroscopy can be an effective treatment option for excision of intra-articular OO and is especially effective in patients with concomitant FAI in treating both pathologies.
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Affiliation(s)
- Andrea M Spiker
- Department of Orthopedic Surgery, Sports Medicine and Hip Preservation, University of Wisconsin-Madison, Madison, WI, USA
| | - Ben-Zion Rotter
- Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 E. 70th St, New York, NY 10021, USA and
| | - Brenda Chang
- Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 E. 70th St, New York, NY 10021, USA and
| | - Douglas N Mintz
- Department of Radiology, Hospital for Special Surgery, 535 E. 70th St, New York, NY 10021, USA
| | - Bryan T Kelly
- Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 E. 70th St, New York, NY 10021, USA and
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Trajectory of self-reported pain and function and knee extensor muscle strength in young patients undergoing arthroscopic surgery for meniscal tears: A systematic review and meta-analysis. J Sci Med Sport 2017; 20:712-717. [PMID: 28233675 DOI: 10.1016/j.jsams.2017.02.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 01/24/2017] [Accepted: 02/06/2017] [Indexed: 12/14/2022]
Abstract
OBJECTIVES To investigate the trajectory of patient reported pain and function and knee extensor muscle strength over time in young individuals undergoing arthroscopic meniscal surgery. DESIGN Systematic review and meta-analysis METHODS: Six databases were searched up to October 13th, 2016. PATIENTS AND INTERVENTION People aged 30 years or younger undergoing surgery for a meniscal tear. OUTCOMES and comparator: (1) Self-reported pain and function in patients undergoing meniscal surgery compared to a non-operative control group (2). Knee extensor strength in the leg undergoing surgery compared to a healthy control group or the contra-lateral leg. Methodological quality was assessed using the SIGN 50 guidelines. RESULTS No studies were found on patient reported pain and function. Six studies, including 137 patients were included in the analysis on knee extensor muscle strength. Knee extensor muscle strength was impaired in the injured leg prior to surgery and was still reduced compared with control data up to 12 months after surgery (SMD: -1.16) (95% CI: -1.83; -0.49). All included studies were assessed to have a high risk of bias. CONCLUSIONS No studies were found comparing the trajectory of self-reported pain and function in patients undergoing arthroscopic surgery compared with non-operative treatments for young patients with meniscal tears. Knee extensor strength seemed to be impaired up to 12 months after surgery in young patients undergoing surgery for meniscal tears. The results of the present study should be interpreted with caution due to a limited number of available studies with high risk of bias including relatively few patients.
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Thomson C, Krouwel O, Kuisma R, Hebron C. The outcome of hip exercise in patellofemoral pain: A systematic review. ACTA ACUST UNITED AC 2016; 26:1-30. [DOI: 10.1016/j.math.2016.06.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 04/10/2016] [Accepted: 06/06/2016] [Indexed: 12/31/2022]
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Abstract
Patellofemoral pain is a common knee pathology that affects a wide range of active individuals. These individuals often seek medical care, with 25% of all patients seen in sports medicine clinics being treated for patellofemoral pain. While conservative treatment produce beneficial short-term results, individuals with patellofemoral pain often have long-term pain and decreased quality of life for many years following their diagnosis. One of the challenges for treating this chronic condition is the heterogeneous presentation of impairments across patients, ranging from soft tissue restriction, muscle weakness, altered movement patterns during functional tasks, and weak core stability. Clinicians need to identify these impairments and develop an individualized impairment-based model for treating patients with PFP. The aim of this review it to provide guidance and recommendations for clinicians who treat PFP in hopes to improve long-term outcomes for the conservative treatment of PFP.
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Affiliation(s)
- Neal R Glaviano
- a Department of Kinesiology , University of Virginia Ringgold standard institution , Charlottesville , VA , USA
| | - Susan Saliba
- a Department of Kinesiology , University of Virginia Ringgold standard institution , Charlottesville , VA , USA
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Almonroeder TG, Benson LC. Sex differences in lower extremity kinematics and patellofemoral kinetics during running. J Sports Sci 2016; 35:1575-1581. [PMID: 27571504 DOI: 10.1080/02640414.2016.1225972] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The incidence of patellofemoral pain (PFP) is 2 times greater in females compared with males of similar activity levels; however, the exact reason for this discrepancy remains unclear. Abnormal mechanics of the hip and knee in the sagittal, frontal, and transverse planes have been associated with an increased risk of PFP. The purpose of this study was to compare the mechanics of the lower extremity in males and females during running in order to better understand the reason(s) behind the sex discrepancy in PFP. Three-dimensional kinematic and kinetic data were collected as male and female participants completed overground running trials at a speed of 4.0 m · s-1 (±5%). Patellofemoral joint stress (PFJS) was estimated using a sagittal plane knee model. The kinematics of the hip and knee in the frontal and transverse planes were also analysed. Male participants demonstrated significantly greater sagittal plane peak PFJS in comparison with the female participants (P < .001, ES = 1.9). However, the female participants demonstrated 3.5° greater peak hip adduction and 3.4° greater peak hip internal rotation (IR). As a result, it appears that the sex discrepancy in PFP is more likely to be related to differences in the kinematics of the hip in the frontal and transverse planes than differences in sagittal plane PFJS.
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Affiliation(s)
- Thomas G Almonroeder
- a Musculoskeletal Injury Biomechanics Laboratory, Department of Kinesiology , University of Wisconsin - Milwaukee , Milwaukee , WI , USA
| | - Lauren C Benson
- a Musculoskeletal Injury Biomechanics Laboratory, Department of Kinesiology , University of Wisconsin - Milwaukee , Milwaukee , WI , USA
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21
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Zhang ZJ, Ng GYF, Lee WC, Fu SN. Increase in passive muscle tension of the quadriceps muscle heads in jumping athletes with patellar tendinopathy. Scand J Med Sci Sports 2016; 27:1099-1104. [DOI: 10.1111/sms.12749] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/14/2016] [Indexed: 12/01/2022]
Affiliation(s)
- Z. J. Zhang
- Guangdong-Hongkong Joint Sports Rehabilitation and Research Center; Guangdong Provincial Work Injury Rehabilitation Hospital; Guangzhou China
- Department of Rehabilitation Sciences; The Hong Kong Polytechnic University, Hung Hom; Kowloon Hong Kong
- Center of Rehabilitation Medicine; Henan Provincial Orthopedic Hospital; Luoyang China
| | - G. Y. F. Ng
- Department of Rehabilitation Sciences; The Hong Kong Polytechnic University, Hung Hom; Kowloon Hong Kong
| | - W. C. Lee
- Department of Rehabilitation Sciences; The Hong Kong Polytechnic University, Hung Hom; Kowloon Hong Kong
| | - S. N. Fu
- Department of Rehabilitation Sciences; The Hong Kong Polytechnic University, Hung Hom; Kowloon Hong Kong
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