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Mozafaripour E, Shirvani H, Alikhani S, Bayattork M, Yaghoubitajani Z, Andersen LL. The effect of a suspension training on physical fitness, lower extremity biomechanical factors, and occupational health in Navy personnel: a randomized controlled trial. Sci Rep 2024; 14:11192. [PMID: 38755263 PMCID: PMC11099111 DOI: 10.1038/s41598-024-61933-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 05/11/2024] [Indexed: 05/18/2024] Open
Abstract
Optimal physical fitness is essential for military personnel to effectively meet their rigorous physical demands. This study aimed to investigate the effectiveness of a suspension training program on physical fitness, biomechanical risk factors for lower extremity injury, mental health, and work-related factors in Navy personnel. A total of 50 young men participated in a randomized controlled trial. The participants were randomly assigned to two groups (n = 25): the intervention group and the control group. The intervention group performed an eight-week suspension training session three times per week, while the control group maintained their daily duties. The primary outcome was physical performance. The secondary outcomes were determined biomechanical risk factors for lower extremity injuries, mental health, and work-related factors. The data were analyzed using the analysis of covariance (ANCOVA). Compared with the control group, the intervention group showed significant improvements in physical performance, biomechanical risk for lower extremity injuries, and work-related factors from baseline to follow-up (p ≤ 0.05). However, there was no improvement in mental health. Based on these findings, suspension training positively impacted physical fitness, reduced injury risk, and enhanced the work-related factors of Navy personnel. This study provides new insights for various related experts and military coaches because it is an easy-to-use and feasible method with minimal facilities.
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Affiliation(s)
- Esmaeil Mozafaripour
- Health and Sports Medicine Department, Faculty of Physical Education and Sport Sciences, University of Tehran, between 15th and 16th St., North Kargar st., Tehran, Iran.
| | - Hossein Shirvani
- Exercise Physiology Research Center Research Institute for Life Style Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Sobhan Alikhani
- Faculty of Sport Sciences, Shahid Rajaee Teacher Training University, Tehran, Iran
| | - Mohammad Bayattork
- Sport Sciences and Physical Education, Faculty of Humanities Science, University of Hormozgan, Bandar Abbas, Iran
| | - Zohreh Yaghoubitajani
- Department of Health and Sport Rehabilitation, Faculty of Sport Sciences and Health, Shahid Beheshti University, Tehran, Iran
| | - Lars Louis Andersen
- National Research Centre for the Working Environment, Copenhagen, Denmark
- Department of Health Science and Technology, Aalborg University, 9220, Aalborg, Denmark
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Dalos D, Marshall PR, Lissy M, Maas KJ, Henes FO, Kaul MG, Kleinertz H, Frings J, Krause M, Frosch KH, Welsch GH. Influence of leg axis alignment on MRI T2* mapping of the knee in young professional soccer players. BMC Musculoskelet Disord 2024; 25:144. [PMID: 38360606 PMCID: PMC10868071 DOI: 10.1186/s12891-024-07233-3] [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: 08/29/2023] [Accepted: 01/26/2024] [Indexed: 02/17/2024] Open
Abstract
BACKGROUND Investigation of the association between leg axis alignment and biochemical MRI in young professional soccer players in order to identify a potential influence of the leg axis on cartilage regions at risk. METHODS Sixteen professional soccer players (21 ± 3 years) underwent static and dynamic leg axis analysis via radiation free DIERS formetric 4 D as well as 3-T MRI examination of both knees. Quantitative T2* mapping of the knee cartilage was performed and T2* values were evaluated as 144 regions of interest. Subgroup analysis was performed in players with severe varus alignment (> 6°). RESULTS Analysis of the leg axis geometry revealed a mean static alignment of 6.6° ± 2.5 varus and a mean dynamic alignment of 5.1° ± 2.6 varus. Quantitative T2* mapping showed significantly increased T2* values in the superficial cartilage layer compared to the deeper region (p < 0.001) as well as a significant increase in relaxation times in the femoral cartilage from anterior to intermediate to posterior (p < 0.001). Combination of both methods revealed a significant correlation for the degree of varus alignment and the femoral, posterior, deep region of the medial knee compartment (r = 0.4; p = 0.03). If severe varus alignment was present this region showed a significant increase in relaxation time compared to players with a less pronounced leg axis deviation (p = 0.003). CONCLUSION This study demonstrates that varus alignment in young soccer players is associated with elevated T2* relaxation times in the deep cartilage layer of the medial, posterior, femoral compartment and might therefore be a contributing factor in the early pathogenesis of manifest cartilage lesions. Therefore, these findings should be considered in the development of preventive training programs.
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Affiliation(s)
- D Dalos
- Center for Athletic Medicine, UKE Athleticum, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
- Institute of Interdisciplinary Exercise Science and Sports Medicine, MSH Medical School Hamburg, Hamburg, Germany.
- Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - P R Marshall
- RasenBallsport Leipzig GmbH, Leipzig, Germany
- Department of Orthopaedic and Trauma Surgery, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - M Lissy
- Center for Athletic Medicine, UKE Athleticum, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - K J Maas
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - F O Henes
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Diagnostic and Interventional Radiology, BG Hospital Hamburg, Hamburg, Germany
| | - M G Kaul
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - H Kleinertz
- Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - J Frings
- Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - M Krause
- Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - K H Frosch
- Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Trauma Surgery, Orthopaedics and Sports Traumatology, BG Hospital Hamburg, Hamburg, Germany
| | - G H Welsch
- Center for Athletic Medicine, UKE Athleticum, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Mozafaripour E, Sadati SKM, Najafi L, Zoghi M. The Effect of Motor Imaginary Combined with Transcranial Direct Current Stimulation (tDCS) on Balance in Middle-Aged Women with High Fall Risk: A Double-Blind Randomized Controlled Trial. Neural Plast 2023; 2023:9680371. [PMID: 37035217 PMCID: PMC10081897 DOI: 10.1155/2023/9680371] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 01/19/2023] [Accepted: 02/07/2023] [Indexed: 04/03/2023] Open
Abstract
Introduction. The risk of falling and its subsequent injuries increases with aging. Impaired balance and gait are important contributing factors to the increased risk of falling. A wide range of methods was examined to improve balance, but these interventions might produce small effects or be inapplicable for this population. The current study aimed at investigating the effect of motor imaginary (MI) training combined with transcranial direct current stimulation (tDCS) over the cerebellum on balance in middle-aged women with high fall risk. Methods. Thirty subjects aged 40-65 years old were divided into two groups including intervention (
) and sham control (
). The participants completed a 4-week program 3 times per week. The intervention group performed MI training combined with tDCS over the cerebellum, and the control group performed MI training combined with sham tDCS over the cerebellum. Static and dynamic balance were measured at baseline and after completing the 4-week program using balance error scoring system (BESS) and Y balance testing, respectively. Result. A one-way analysis of covariance and paired
-tests were used to analyze the data. Significant improvement was observed in both balance tests in the intervention group after the implementation of the 4-week intervention program compared to the control group. The within-group analysis showed that both static and dynamic balance improved significantly from the baseline values only in the intervention group (
) and not in the control group (
). Conclusion. The results of the study indicate that MI training combined with tDCS over the cerebellum can lead to balance improvement in middle-aged women with high fall risk.
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Affiliation(s)
- Esmaeil Mozafaripour
- Department of Health and Sports Medicine, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
| | - Seyed Kazem Mousavi Sadati
- Department of Physical Education and Sport Science, East Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Leila Najafi
- Department of Physical Education and Sport Science, East Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Maryam Zoghi
- Discipline of Physiotherapy, Institute of Health and Wellbeing, Federation University Australia, Victoria, Australia
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Holder J, van Drongelen S, Uhlrich SD, Herrmann E, Meurer A, Stief F. Peak knee joint moments accurately predict medial and lateral knee contact forces in patients with valgus malalignment. Sci Rep 2023; 13:2870. [PMID: 36806297 PMCID: PMC9938879 DOI: 10.1038/s41598-023-30058-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 02/15/2023] [Indexed: 02/19/2023] Open
Abstract
Compressive knee joint contact force during walking is thought to be related to initiation and progression of knee osteoarthritis. However, joint loading is often evaluated with surrogate measures, like the external knee adduction moment, due to the complexity of computing joint contact forces. Statistical models have shown promising correlations between medial knee joint contact forces and knee adduction moments in particularly in individuals with knee osteoarthritis or after total knee replacements (R2 = 0.44-0.60). The purpose of this study was to evaluate how accurately model-based predictions of peak medial and lateral knee joint contact forces during walking could be estimated by linear mixed-effects models including joint moments for children and adolescents with and without valgus malalignment. Peak knee joint moments were strongly correlated (R2 > 0.85, p < 0.001) with both peak medial and lateral knee joint contact forces. The knee flexion and adduction moments were significant covariates in the models, strengthening the understanding of the statistical relationship between both moments and medial and lateral knee joint contact forces. In the future, these models could be used to evaluate peak knee joint contact forces from musculoskeletal simulations using peak joint moments from motion capture software, obviating the need for time-consuming musculoskeletal simulations.
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Affiliation(s)
- Jana Holder
- Movement Analysis Laboratory, Department of Orthopedics (Friedrichsheim), University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt/Main, Germany. .,Department of Sport and Exercise Science, University of Salzburg, Salzburg, Austria.
| | - Stefan van Drongelen
- Dr. Rolf M. Schwiete Research Unit for Osteoarthritis, Department of Orthopedics (Friedrichsheim), University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt/Main, Germany
| | - Scott David Uhlrich
- grid.168010.e0000000419368956Department of Bioengineering, Stanford University, Stanford, CA USA ,grid.280747.e0000 0004 0419 2556Musculoskeletal Research Lab, VA Palo Alto Healthcare System, Palo Alto, CA USA
| | - Eva Herrmann
- grid.7839.50000 0004 1936 9721Institute of Biostatistics and Mathematical Modeling, Goethe University Frankfurt, Frankfurt/Main, Germany
| | - Andrea Meurer
- Department of Orthopedics (Friedrichsheim), University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt/Main, Germany ,Present Address: Medical Park St. Hubertus Klinik, Bad Wiessee, Germany
| | - Felix Stief
- Movement Analysis Laboratory, Department of Orthopedics (Friedrichsheim), University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt/Main, Germany ,Dr. Rolf M. Schwiete Research Unit for Osteoarthritis, Department of Orthopedics (Friedrichsheim), University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt/Main, Germany
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Braun S, Brenneis M, Holder J, Meurer A, Stief F. Intra- and interobserver reliability analysis of pediatric lower limb parameters on digital long leg radiographs. J Orthop Surg Res 2023; 18:69. [PMID: 36707864 PMCID: PMC9881281 DOI: 10.1186/s13018-023-03552-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 01/19/2023] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Malalignments of the lower extremity are common reasons for orthopedic consultation because it may lead to osteoarthritis in adulthood. An accurate and reliable radiological assessment of lower limb alignment in children and adolescents is essential for clinical decision-making on treatment of limb deformities and for regular control after a surgical intervention. OBJECTIVE First, does the analysis of full-length standing anteroposterior radiographs show a good intra- and interobserver reliability? Second, which parameter is most susceptible to observer-dependent errors? Third, what is the Standard Error of Measurement (SEM95%) of the absolute femoral and tibial length? METHODS Two observers evaluated digital radiographs of 144 legs from 36 children and adolescents with pathological valgus alignment before a temporary hemiepiphysiodesis and before implant removal. Parameters included Mechanical Femorotibial Angle (MFA), Mechanical Axis Deviation (MAD), mechanical Lateral Distal Femoral Angle (mLDFA), mechanical Medial Proximal Tibial Angle (mMPTA), mechanical Lateral Proximal Femoral Angle (mLPFA), mechanical Lateral Distal Tibial Angle (mLDTA), Joint Line Convergence Angle (JLCA), femur length, tibial length. Intra- and interobserver reliability (ICC2,1), SEM95% and proportional errors were calculated. RESULTS The intra- and interobserver reliability for almost all measurements was found to be good to excellent (Intra-ICC2,1: 0.849-0.999; Inter-ICC2,1: 0.864-0.996). The SEM95% of both observers was found to be ± 1.39° (MFA), ± 3.31 mm (MAD), ± 1.06° (mLDFA) and ± 1.29° (mMPTA). The proportional error of MAD and MFA is comparable (47.29% vs. 46.33%). The relevant knee joint surface angles show a lower proportional error for mLDFA (42.40%) than for mMPTA (51.60%). JLCA has a proportional error of 138%. Furthermore, the SEM95% for the absolute values of the femoral and tibial length was 4.53 mm for the femur and 3.12 mm for the tibia. CONCLUSIONS In conclusion, a precise malalignment measurement and the knowledge about SEM95% of the respective parameters are crucial for correct surgical or nonsurgical treatment. The susceptibility to error must be considered when interpreting malalignment analysis and must be considered when planning a surgical intervention. The results of the present study elucidate that MAD and MFA are equally susceptible to observer-dependent errors. This study shows good to excellent intra- and interobserver ICCs for all leg alignment parameters and joint surface angles, except for JLCA. TRIAL REGISTRATION This study was registered with DRKS (German Clinical Trials Register) under the number DRKS00015053. LEVEL OF EVIDENCE I, Diagnostic Study.
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Affiliation(s)
- Sebastian Braun
- grid.411088.40000 0004 0578 8220Department of Orthopedics (Friedrichsheim), University Hospital Frankfurt, Goethe University, 60528 Frankfurt/Main, Germany
| | - Marco Brenneis
- grid.411088.40000 0004 0578 8220Department of Orthopedics (Friedrichsheim), University Hospital Frankfurt, Goethe University, 60528 Frankfurt/Main, Germany
| | - Jana Holder
- grid.411088.40000 0004 0578 8220Department of Orthopedics (Friedrichsheim), University Hospital Frankfurt, Goethe University, 60528 Frankfurt/Main, Germany ,grid.7039.d0000000110156330Department of Sports and Exercise Science, University of Salzburg, 5020 Salzburg, Austria
| | - Andrea Meurer
- grid.411088.40000 0004 0578 8220Department of Orthopedics (Friedrichsheim), University Hospital Frankfurt, Goethe University, 60528 Frankfurt/Main, Germany ,Medical Park St. Hubertus Klinik, Bad Wiessee, Germany
| | - Felix Stief
- grid.411088.40000 0004 0578 8220Department of Orthopedics (Friedrichsheim), University Hospital Frankfurt, Goethe University, 60528 Frankfurt/Main, Germany ,grid.411088.40000 0004 0578 8220Dr. Rolf M. Schwiete Research Unit for Osteoarthritis, Department of Orthopedics (Friedrichsheim), University Hospital Frankfurt, Goethe University, Frankfurt/Main, Germany
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Ossendorff R, Richter J, Heijens E, Schildberg FA, Haeder G, Salzmann GM. The Validity of Motion Capture Analysis System against the Gold Standard Long-Standing Radiography in the Measurement of Lower Extremity Alignment. J Clin Med 2023; 12:jcm12020567. [PMID: 36675496 PMCID: PMC9863270 DOI: 10.3390/jcm12020567] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/22/2022] [Accepted: 01/06/2023] [Indexed: 01/13/2023] Open
Abstract
Motion capture analysis (MCA) has the advantage of providing a static and dynamic leg axis analysis without radiation. Nevertheless, there is a lack of evidence regarding the accuracy of this technique. To test whether mechanical femorotibial axis angle (MAA) measurement recorded with a non-invasive MCA system is equal to the gold standard static long-standing full-leg radiographs (LSX) and if the degree of malalignment or other parameters (BMI, body mass, height, age) influence the accuracy, a total of 102 consecutive patients were examined using LSX and MCA. Static as well as all gait motion phases at 3 km/h were analyzed regarding the difference between the two angles. There was no statistical difference for MAA between LSX (MAArad) and MCA (MAAstat) (p = 0.091). There was a strong correlation (rs = 0.858, p < 0.001) between the two methods. The highest accuracy was detected for values of standing MCA. Also, the gait MCA values showed strong correlation with LSX but weaker correlation compared to standing MCA (initial swing rs = 0.549; terminal stance rs = 0.815; p < 0.001). BMI, body mass, and height did not influence the accuracy of MCA. MCA enables frontal alignment analysis with high accuracy and without the side effect of radiation.
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Affiliation(s)
- Robert Ossendorff
- Department for Orthopedics and Trauma Surgery, University Hospital Bonn, 53127 Bonn, Germany
- Correspondence:
| | - Johanna Richter
- Institute of Sports Science, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | | | - Frank A. Schildberg
- Department for Orthopedics and Trauma Surgery, University Hospital Bonn, 53127 Bonn, Germany
| | | | - Gian M. Salzmann
- Gelenkzentrum Rhein-Main, 65239 Hochheim, Germany
- Schulthess Clinic, 8008 Zurich, Switzerland
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Mozafaripour E, Seidi F, Minoonejad H, Bayattork M, Khoshroo F. The effectiveness of the comprehensive corrective exercise program on kinematics and strength of lower extremities in males with dynamic knee valgus: a parallel-group randomized wait-list controlled trial. BMC Musculoskelet Disord 2022; 23:700. [PMID: 35869467 PMCID: PMC9306108 DOI: 10.1186/s12891-022-05652-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 07/15/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Dynamic knee valgus (DKV) is a prevalent movement impairment widely regarded as a risk factor for lower extremity disorders such as patellofemoral pain syndrome. The present study aimed to investigate the effectiveness of the comprehensive corrective exercise program (CCEP) on kinematics and strength of lower extremities in males with DKV.
Methods
Thirty asymptomatic young men with DKV between the ages of 18 and 28 years participated in this study. They were randomly assigned to the intervention (n = 15) and control groups (n = 15). The intervention group performed the CCEP for three sessions per week for eight weeks, while the control group only did activities of daily living. Hip external rotator and abductor muscle strength and three-dimensional lower extremity kinematics consisting of knee varus/valgus, femur adduction/abduction, femur medial/lateral rotation, and tibial medial/lateral rotation were measured at the baseline and post-test. The data were analyzed using the analysis of covariance (ANCOVA).
Results
There were significant improvements in all kinematics variables in the intervention group after the 8-week CCEP. Moreover, the strength of abductor and external rotator muscle improved in the intervention group (P < 0.05).
Conclusions
The CCEP led to substantial improvements in the selected variables of lower extremity kinematics and muscle strength in participants with DKV during a single-leg squat. These results imply that practitioners should adopt a comprehensive approach to pay simultaneous attention to both proximal and distal segments for improving DKV.
Trial registration
The protocol has been approved in the Registry of Clinical Trials (Registration N: IRCT20180821040843N1) on 2018-12-30.
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Tremblay JO, Bernstein JM, Schoenleber SJ. Lower Extremity Malformations. Pediatr Rev 2022; 43:704-713. [PMID: 36450641 DOI: 10.1542/pir.2020-001180] [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: 12/05/2022]
Affiliation(s)
| | - Jessica M Bernstein
- Department of Orthopaedic Surgery, University of Miami Miller School of Medicine/Jackson Memorial Hospital, Miami, FL
| | - Scott J Schoenleber
- Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences/Arkansas Children's Hospital, Little Rock, AR
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Byrnes SK, Holder J, Stief F, Wearing S, Böhm H, Dussa CU, Horstmann T. Frontal plane knee moment in clinical gait analysis: A systematic review on the effect of kinematic gait changes. Gait Posture 2022; 98:39-48. [PMID: 36049417 DOI: 10.1016/j.gaitpost.2022.07.258] [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: 02/13/2022] [Revised: 07/27/2022] [Accepted: 07/30/2022] [Indexed: 02/02/2023]
Abstract
INTRODUCTION The frontal plane knee moment (KAM1 and KAM2) derived from non-invasive three-dimensional gait analysis is a surrogate measure for knee joint load and of great interest in clinical and research settings. Many aspects can influence this measure either unintentionally or purposely in order to reduce the knee joint load to relieve symptoms and pain. All these aspects must be known when conducting a study or interpreting gait data for clinical decision-making. METHODS This systematic review was registered with PROSPERO (CRD42020187038). Pubmed and Web of Science were searched for peer-reviewed, original research articles in which unshod three-dimensional gait analysis was undertaken and KAM1 and KAM2 were included as an outcome variable. Two reviewers independently screened articles for inclusion, extracted data and performed a methodological quality assessment using Downs and Black checklist. RESULTS In total, 42 studies were included. Based on the independent variable investigated, these studies were divided into three groups: 1) gait modifications, 2) individual characteristics and 3) idiopathic orthopedic deformities. Among others, fast walking speeds (1) were found to increase KAM1; There were no sex-related differences (2) and genu valgum (3) reduces KAM1 and KAM2. CONCLUSION While consistent use of terminology and reporting of KAM is required for meta-analysis, this review indicates that gait modifications (speed, trunk lean, step width), individual characteristics (body weight, age) and idiopathic orthopedic deformities (femoral or tibial torsion, genu valgum/varum) influence KAM magnitudes during walking. These factors should be considered by researchers when designing studies (especially of longitudinal design) or by clinicians when interpreting data for surgical and therapeutic decision-making.
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Affiliation(s)
- S Kimberly Byrnes
- Orthopedic Children's Hospital, Kind im Zentrum - Chiemgau, Aschau, Germany; Department of Sports and Health Sciences, Institute for Conservative and Rehabilitative Orthopedics, Technical University of Munich, Germany.
| | - Jana Holder
- Department of Orthopedics (Friedrichsheim), University Hospital Frankfurt, Frankfurt am Main, Germany; Faculty of Medicine, Goethe University, Frankfurt am Main, Germany
| | - Felix Stief
- Department of Orthopedics (Friedrichsheim), University Hospital Frankfurt, Frankfurt am Main, Germany; Faculty of Medicine, Goethe University, Frankfurt am Main, Germany
| | - Scott Wearing
- Department of Sports and Health Sciences, Institute for Conservative and Rehabilitative Orthopedics, Technical University of Munich, Germany
| | - Harald Böhm
- Orthopedic Children's Hospital, Kind im Zentrum - Chiemgau, Aschau, Germany
| | | | - Thomas Horstmann
- Department of Sports and Health Sciences, Institute for Conservative and Rehabilitative Orthopedics, Technical University of Munich, Germany; Medical Park St. Hubertus Klinik, Bad Wiessee, Germany
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Wu KW, Lee WC, Ho YT, Wang TM, Kuo KN, Lu TW. Balance control and lower limb joint work in children with bilateral genu valgum during level walking. Gait Posture 2021; 90:313-319. [PMID: 34564004 DOI: 10.1016/j.gaitpost.2021.09.187] [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: 04/24/2021] [Revised: 09/10/2021] [Accepted: 09/16/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND Genu valgum results in lower limb malalignment and altered joint mechanics. The study aimed to identify the effects of genu valgum on balance control and muscular work at the joints during gait in children. RESEARCH QUESTION Would bilateral genu valgum affect balance control and muscular work at the joints during gait in children? METHODS Thirteen children with genu valgum and thirteen healthy peers walked at their preferred speed while the body's motions and ground reaction forces were measured to calculate the inclination angles (IA) and the rates of change of IA (RCIA) of the body's center of mass (COM) relative to the center of pressure (COP), as well as the muscular work done at the joints. An independent t-test was used to compare the variables between groups (α = 0.05). RESULTS Compared to the controls, the patients showed significantly increased step width with altered frontal IA and RCIA variables (p < 0.05), including increased average IA over single-limb support and increased peak RCIA during double-limb support (p < 0.05). The patients significantly increased posterior RCIA at heel-strike but decreased anterior RCIA at toe-off (p < 0.05). The patients showed increased muscular work at both the hip and knee during single-limb support (p < 0.05). SIGNIFICANCE The children with genu valgum showed a specific balance control strategy during gait. In the frontal plane, greater hip and knee muscular work was needed to maintain balance under an increased IA, likely owing to increased step width associated with the valgus alignment. In the sagittal plane, less smooth and less stable COM-COP control with increased RCIA at the key gait events indicates faster weight transfer between double-limb and single-limb support. It is suggested that patients with genu valgum, especially in more severe cases, should be monitored for signs of decreased ability and/or muscular strength in maintaining balance during gait.
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Affiliation(s)
- Kuan-Wen Wu
- Department of Orthopaedic Surgery, School of Medicine, National Taiwan University, Taiwan, ROC; Department of Biomedical Engineering, National Taiwan University, Taiwan, ROC; Department of Orthopaedic Surgery, National Taiwan University Hospital, Taiwan, ROC
| | - Wei-Chun Lee
- Department of Biomedical Engineering, National Taiwan University, Taiwan, ROC; Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taiwan, ROC
| | - Ya-Ting Ho
- Department of Biomedical Engineering, National Taiwan University, Taiwan, ROC
| | - Ting-Ming Wang
- Department of Orthopaedic Surgery, School of Medicine, National Taiwan University, Taiwan, ROC; Department of Orthopaedic Surgery, National Taiwan University Hospital, Taiwan, ROC
| | - Ken N Kuo
- Department of Orthopaedic Surgery, National Taiwan University Hospital, Taiwan, ROC
| | - Tung-Wu Lu
- Department of Orthopaedic Surgery, School of Medicine, National Taiwan University, Taiwan, ROC; Department of Biomedical Engineering, National Taiwan University, Taiwan, ROC.
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Stief F, Holder J, Böhm H, Meurer A. [Dynamic analysis of joint loading due to leg axis deformity in the frontal plane : Relevance of instrumented gait analysis]. DER ORTHOPADE 2021; 50:528-537. [PMID: 34156498 DOI: 10.1007/s00132-021-04121-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/05/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Instrumented 3D gait analysis (IGA) has been established for the functional evaluation of orthopedic diseases. It can provide valuable additional information beyond conventional static radiographic diagnostics and, thus, contributes to treatment decisions and a successful surgical outcome. Regarding the assessment of leg axis deformities IGA is currently only used in a few specialized centers. PRACTICE This article describes the methods used by IGA and shows its benefit for the treatment of leg axis deformities of the knee in the frontal plane. In particular, the calculation of dynamic joint loads provides important insights regarding the development of degenerative joint deformities in the knee joint and, thus, complements the static assessment of the leg axis. A new treatment algorithm for guided growth intervention in children and adolescents by temporary epiphysiodesis is presented. IGA can be particularly useful for clinical decision-making in borderline cases. If there is a discrepancy between the static leg axis and dynamic knee joint loading, IGA can reveal potential compensatory mechanisms during walking.
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Affiliation(s)
- Felix Stief
- Klinik für Orthopädie (Friedrichsheim), Universitätsklinikum Frankfurt, Marienburgstraße 2, 60528, Frankfurt am Main, Deutschland.
| | - Jana Holder
- Klinik für Orthopädie (Friedrichsheim), Universitätsklinikum Frankfurt, Marienburgstraße 2, 60528, Frankfurt am Main, Deutschland
| | - Harald Böhm
- Orthopädische Kinderklinik, Aschau im Chiemgau, Deutschland
- PFH Private Hochschule, Göttingen, Deutschland
| | - Andrea Meurer
- Klinik für Orthopädie (Friedrichsheim), Universitätsklinikum Frankfurt, Marienburgstraße 2, 60528, Frankfurt am Main, Deutschland
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Mozafaripour E, Seidi F, Minoonejad H, Mousavi SH, Bayattork M. Can lower extremity anatomical measures and core stability predict dynamic knee valgus in young men? J Bodyw Mov Ther 2021; 27:358-363. [PMID: 34391258 DOI: 10.1016/j.jbmt.2021.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 01/27/2021] [Accepted: 02/28/2021] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Dynamic knee valgus (DKV) is a risk factor for lower extremity injuries such as anterior cruciate ligament and patellofemoral pain syndrome. Purpose of the current study was to investigate the relationship between lower extremity anatomical measures (LEAM) and core stability with DKV during the single-leg squat. METHODS Thirty healthy men aged between 18 and 28 years participated in this cross-sectional biomechanical study.DKV was assessed using a 6-camera motion analysis system during a single-leg squat task. Anteversion of hip, hip internal and external rotation, Q-angle, knee hyperextension, tibial torsion, tibia vara, plantar arch index, and core stability were measured using standard clinical procedures. To predict DKV, a multiple linear regression model was used. RESULT The stability index negatively and plantar arch index positively predicted greater DKV during the single-leg squat task (P = 0.001 and P = 0.09, respectively). Research variables together predicted 82% of the variance in DKV (F(4,26) = 28.09, p < 0.001). However, relationships between other variables and DKV were not found. CONCLUSION The core stability index and plantar arch index were associated with observed DKV during the single-leg squat. These results suggested that proximal and distal variables to the knee should be considered when evaluating individuals who present DKV during the single-leg squat.
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Affiliation(s)
- Esmaeil Mozafaripour
- Health and Sports Medicine Department, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
| | - Foad Seidi
- Health and Sports Medicine Department, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran.
| | - Hooman Minoonejad
- Health and Sports Medicine Department, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
| | - Seyed Hamed Mousavi
- Health and Sports Medicine Department, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran; University of Groningen, University Medical Center Groningen, Department of Rehabilitation Medicine, Groningen, the Netherlands
| | - Mohammad Bayattork
- Sport Sciences and Physical Education, Faculty of Humanities Science, University of Hormozgan, Bandar Abbas, Iran
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The Profile and Development of the Lower Limb in Setswana-Speaking Children between the Ages of 2 and 9 Years. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17093245. [PMID: 32384742 PMCID: PMC7246802 DOI: 10.3390/ijerph17093245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/27/2020] [Accepted: 04/30/2020] [Indexed: 11/21/2022]
Abstract
Profile data on normal lower limb development and specifically tibiofemoral angle development in black, Setswana-speaking South African children are lacking. This study aimed to provide profiles on the development of the tibiofemoral angle, hip anteversion angle and tibial torsion angles in two- to nine-year-old children. Measurements of the tibiofemoral angle, intercondylar distances or intermalleolar distances, quadriceps-angle, hip anteversion- and tibial torsion angle were clinically obtained from 691 healthy two- to nine-year-old children. Two-year-old children presented with closest to genu varum at −3.4° (±3.4°). At three years, a peak of −5.7° (±2.3°) genu valgum was seen, which plateaued at −4.5° (±2.1°) at age nine years. Intermalleolar distance results support tibiofemoral angle observations. Small quadricep-angles were observed in the two-year-old group, (−3.81° ± 3.77°), which increased to a mean peak of −9.2° (±4.4°) in nine-year-olds. From the age of four years old, children presented with neutral tibial torsion angles, whilst two- and three-year-olds presented with internal tibial torsion angles. Anteversion angles were the greatest in three-year-olds at 77.6° ± 13.8° and decreased to a mean angle of 70.8° ± 6.9° in nine-year-olds. The tibiofemoral angle developed similarly to those tested in European, Asian and Nigerian children, but anteversion- and internal tibial torsion angles were greater in the Setswana population than angles reported in European children. Our findings indicate that lower limb development differs in different environments and traditions of back-carrying may influence the development, which requires further investigation.
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Holder J, Feja Z, van Drongelen S, Adolf S, Böhm H, Meurer A, Stief F. Effect of guided growth intervention on static leg alignment and dynamic knee contact forces during gait. Gait Posture 2020; 78:80-88. [PMID: 32298950 DOI: 10.1016/j.gaitpost.2020.03.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 03/12/2020] [Accepted: 03/20/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND Lower limb malalignment in the frontal plane is one of the major causes of developing knee osteoarthritis. Growing children can be treated by temporary hemiepiphysiodesis when diagnosed with lower limb malalignment. RESEARCH QUESTION Is there a difference between medial or lateral knee contact force (KCF) before (PRE) and after (POST) hemiepiphysiodesis in patients with valgus malalignment and compared to a typically developed control group (TD)? Does a linear relationship exist between the static radiographic mechanical axis angle and dynamic medial/lateral KCF? METHODS In this prospective study, an OpenSim full body model with an adapted knee joint was used to calculate KCFs in the stance phase of 16 children with diagnosed genu valgum and 16 age- and sex-matched TDs. SPM was applied to compare KCFs before and after guided growth and to test a linear relationship between the mechanical axis angle and KCFs. RESULTS After the intervention, POST revealed a significantly increased medial KCF (p < 0.001, 4-97 % of stance) and decreased lateral KCF (p < 0.001, 6-98 %) compared to PRE. Comparing POST with TD, short phases with a significant difference were found (medial: p = 0.039, 84-88 %; lateral: p = 0.019, 3-11 %). The static mechanical axis angle showed a longer phase of a significant relation to KCFs for POST compared to PRE. SIGNIFICANCE This study showed that temporary hemiepiphysiodesis in patients with valgus malalignment reduces the loading in the lateral compartment of the knee and thus the risk of developing osteoarthritis in this compartment. The determination of dynamic KCFs can be clinically relevant for the treatment of lower limb malalignment, especially for decision making before surgery, when compensatory mechanisms may play an important role. Additionally, the static radiographic mechanical axis angle does not necessarily represent the dynamic loading of the lateral knee compartment.
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Affiliation(s)
- Jana Holder
- Orthopedic University Hospital Friedrichsheim gGmbH, Movement Analysis Laboratory, Frankfurt, Main, Germany.
| | - Zoe Feja
- Orthopedic University Hospital Friedrichsheim gGmbH, Movement Analysis Laboratory, Frankfurt, Main, Germany
| | - Stefan van Drongelen
- Orthopedic University Hospital Friedrichsheim gGmbH, Dr. Rolf M. Schwiete Research Unit for Osteoarthritis, Frankfurt, Main, Germany
| | - Stefanie Adolf
- Orthopedic University Hospital Friedrichsheim gGmbH, Department of Special Orthopedics, Frankfurt, Main, Germany
| | - Harald Böhm
- Orthopedic Hospital for Children, Behandlungszentrum Aschau gGmbH, Aschau, Chiemgau, Germany
| | - Andrea Meurer
- Orthopedic University Hospital Friedrichsheim gGmbH, Department of Special Orthopedics, Frankfurt, Main, Germany
| | - Felix Stief
- Orthopedic University Hospital Friedrichsheim gGmbH, Movement Analysis Laboratory, Frankfurt, Main, Germany
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Concomitant Anterior Cruciate Ligament Reconstruction and Temporary Hemiepiphysiodesis in the Skeletally Immature: A Combined Technique. J Pediatr Orthop 2019; 39:e500-e505. [PMID: 30628975 DOI: 10.1097/bpo.0000000000001330] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Young athletes with an anterior cruciate ligament (ACL) disruption and limb malalignment pose a treatment dilemma. Little has been published regarding limb malalignment in this population. Our aim is to review the results of combined treatment of an ACL deficient knee and genu valgum in skeletally immature patients. METHODS A retrospective review of skeletally immature patients who underwent transphyseal ACL reconstruction and concomitant hemiepiphysiodesis between 2004 and 2015 by 1 surgeon at a single institution was performed. Included patients had at least a year of growth remaining and were followed to skeletal maturity. Patients with a diagnosis of a connective tissue disorder were excluded. Knee stability, rate of retear, the rate of mechanical axis correction, and time to full correction were determined. RESULTS Ninety skeletally immature patients underwent transphyseal ACL reconstruction, 8 of which met inclusion criteria. Mean time to correction of the valgus deformity was 13 months (0.4 degree/mo). No patient required additional surgeries for malalignment. All patients had improvement in knee stability. One patient had a retear of their ACL reconstruction, for a failure rate of 13%. Preoperative mechanical lateral distal femoral angle and mechanical axis deviation corrected to near-neutral alignment for all treated limbs and were significantly different (P=0.001) than those measured preoperatively. CONCLUSIONS Promising results were seen for simultaneous correction of genu valgum and transphyseal ACL reconstruction. Treatment of both pathologies in a concomitant surgery can be considered in the appropriate population, with expected results comparable to each procedure in isolation. LEVEL OF EVIDENCE Level IV-case series.
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Abstract
BACKGROUND Lower extremity malalignment is a common problem presented to pediatric orthopaedists. Risk for early arthritis is often a concern among parents seeking advice and treatment. We seek to review previous research with regard to the natural history of malalignment. METHODS A search of available literature on PubMed was constructed to capture articles covering the natural history of malalignment, secondary to childhood fracture as well as congenital and acquired pediatric deformity. In order to remain strictly relevant to pediatrics, articles reviewing deformities acquired in adulthood were not referenced. Biomechanical data and animal studies were included when deemed appropriate. RESULTS High-quality data with regard to long-term risk of arthritis due to malalignment is lacking. Through a combination of biomechanical data, animal models, and a small body of longitudinal clinical data, it is clear that some patients with malalignment progress to early arthritic change. Unfortunately, detailed risk factors of who is at high risk versus low risk remains difficult to determine. CONCLUSIONS Treatment of minor lower extremity malalignment is not supported by the current orthopaedic literature. Treatment plans should focus on the presence of symptoms, and in asymptomatic but severe cases. Even in more severe cases, strong evidence to support prophylactic realignment is not available. Evidence to suggest that preventative realignment is superior to intervention at the time of symptom onset does not exist.
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Farr S, Kranzl A, Hahne J, Ganger R. Rotational gait patterns in children and adolescents following tension band plating of idiopathic genua valga. J Orthop Res 2017; 35:1617-1624. [PMID: 27617888 DOI: 10.1002/jor.23434] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 09/08/2016] [Indexed: 02/04/2023]
Abstract
Literature suggests that children and adolescents with idiopathic genua valga present with considerable gait deviations in frontal and transverse planes, including altered frontal knee moments, reduced external knee rotation, and increased external hip rotation. This study aimed to evaluate gait parameters in these patients after surgical correction using tension band plating (TBP). We prospectively evaluated 24 consecutive, skeletally immature patients, who received full-length standing radiographs and three-dimensional gait analysis before and after correction, and compared the results observed to a group of 11 typically developing peers. Prior to TBP the cohort showed significantly decreased (worse) internal frontal knee moments compared to the control group. After axis correction the mean and maximum knee moments changed significantly into normalized knee moments (p < 0.0001). In the transverse plane, only the foot progression angle (p = 0.020) changed significantly following intervention. Post-correction knee moments were similar to controls (p = 0.175), but the patient cohort exhibited a significantly decreased knee external rotation (p = 0.004) and increased external hip rotation (p < 0.001) during gait. In addition, the effect of transverse plane changes on knee moments in patients with restored, straight limb axis was calculated. Hence, patients with restored alignment but persistence of decreased external knee rotation demonstrated significantly greater knee moments than those without rotational abnormalities (p = 0.001). This study found that frontal knee moments during gait normalized in children with idiopathic genua valga after surgery. However, decreased external knee rotation and increased external hip rotation during gait persisted in the study cohort. Despite radiological correction, decreased external rotation during gait was associated with increases in medial knee loading. Surgical correction for children with genua valga but normal knee moments may be detrimental, due to redistribution of dynamic knee loading into the opposite joint compartment. © 2016 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 35:1617-1624, 2017.
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Affiliation(s)
- Sebastian Farr
- Department of Pediatric Orthopedics and Adult Foot and Ankle Surgery, Orthopedic Hospital Speising, Speisingerstrasse 109, A-1130, Vienna, Austria
| | - Andreas Kranzl
- Laboratory for Gait and Movement Analysis, Orthopedic Hospital Speising, Vienna, Austria
| | - Julia Hahne
- Vinzenz Gruppe Center of Orthopedic Excellence, Vienna, Austria
| | - Rudolf Ganger
- Department of Pediatric Orthopedics and Adult Foot and Ankle Surgery, Orthopedic Hospital Speising, Speisingerstrasse 109, A-1130, Vienna, Austria
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Abstract
The pediatric lower extremity has well known growth patterns. When deformities or growth disturbances occur, there are several methods to measure and predict the resulting discrepancy, including the Green-Anderson, Moseley, and Multiplier methods. Many techniques exist to correct leg length discrepancy and deformity such and temporary epiphysiodesis, permanent epiphysiodesis, external fixators, and internal lengthening devices. All of these methods have numerous complications and limitations; however, with careful planning and patient selection, length and alignment can be improved with high patient satisfaction.
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Affiliation(s)
- Amanda T Whitaker
- Department of Orthopaedic Surgery, Boston Children's Hospital, 300 Longwood Ave, HU319, Boston, MA, 02115, USA
- Department of Orthopaedic Surgery, Nationwide Children's Hospital, 700 Children's Drive T2E-2709, Columbus, OH, 43205, USA
| | - Carley Vuillermin
- Department of Orthopaedic Surgery, Boston Children's Hospital, 300 Longwood Ave, HU319, Boston, MA, 02115, USA.
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Three-dimensional hip and knee kinematics during walking, running, and single-limb drop landing in females with and without genu valgum. Clin Biomech (Bristol, Avon) 2016; 31:7-11. [PMID: 26515886 DOI: 10.1016/j.clinbiomech.2015.10.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 10/09/2015] [Accepted: 10/12/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND Dynamic knee valgus in females has been associated with various knee pathologies. Abnormal 3D hip and knee kinematics contribute prominently to this presentation, and these may become more aberrant with more demanding tasks. Underlying genu valgus may also accentuate such kinematics, but this effect has never been tested. Therefore, the purpose of this study was to compare 3D hip and knee kinematics during walking, running, and single-limb drop landing in females with and without genu valgus malalignment. We expected abnormal kinematics to become more evident in the valgus subjects as task demands increased. METHODS Eighteen healthy females with genu valgum and 18 female controls with normal alignment underwent 3D motion analysis while performing walking, running, and single-limb drop-landing trials. Sagittal, frontal, and transverse plane hip and knee kinematics were compared between groups across tasks using analyses of variance and between-group effect sizes. FINDINGS Group differences did not generally increase with higher forces. The valgus females demonstrated decreased hip flexion (ES=0.72-0.88) and increased knee abduction (ES=0.87-1.47) across the tasks. During running and single-limb drop landing, they showed increased knee external rotation (ES=0.69-0.73). Finally, during walking, the valgus females showed increased hip adduction (ES=0.69). INTERPRETATION These results suggest that females with genu valgus alignment utilize aberrant hip and knee mechanics previously associated with dynamic valgus in the literature, but that these pathomechanics do not generally worsen with rising task demands. Healthy females that present with genu valgus may be natively at elevated risk for knee pathology.
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Böhm H, Stief F, Sander K, Hösl M, Döderlein L. Correction of static axial alignment in children with knee varus or valgus deformities through guided growth: Does it also correct dynamic frontal plane moments during walking? Gait Posture 2015; 42:394-7. [PMID: 26159802 DOI: 10.1016/j.gaitpost.2015.06.186] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 05/20/2015] [Accepted: 06/20/2015] [Indexed: 02/02/2023]
Abstract
Malaligned knees are predisposed to the development and progression of unicompartmental degenerations because of the excessive load placed on one side of the knee. Therefore, guided growth in skeletally immature patients is recommended. Indication for correction of varus/valgus deformities are based on static weight bearing radiographs. However, the dynamic knee abduction moment during walking showed only a weak correlation to malalignment determined by static radiographs. Therefore, the aim of the study was to measure the effects of guided growth on the normalization of frontal plane knee joint moments during walking. 15 legs of 8 patients (11-15 years) with idiopathic axial varus or valgus malalignment were analyzed. 16 typically developed peers served as controls. Instrumented gait analysis and clinical assessment were performed the day before implantation and explantation of eight-plates. Correlation between static mechanical tibiofemoral axis angle (MAA) and dynamic frontal plane knee joint moments and their change by guided growth were performed. The changes in dynamic knee moment in the frontal plane following guided growth showed high and significant correlation to the changes in static MAA (R=0.97, p<0.001). Contrary to the correlation of the changes, there was no correlation between static and dynamic measures in both sessions. In consequence two patients that had a natural knee moment before treatment showed a more pathological one after treatment. In conclusion, the changes in the dynamic load situation during walking can be predicted from the changes in static alignment. If pre-surgical gait analysis reveals a natural load situation, despite a static varus or valgus deformity, the intervention must be critically discussed.
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Affiliation(s)
- Harald Böhm
- Orthopaedic Hospital for Children, Behandlungszentrum Aschau gGmbH, Aschau/Chiemgau, Germany.
| | - Felix Stief
- Orthopedic University Hospital Friedrichsheim gGmbH, Frankfurt/Main, Germany
| | - Klaus Sander
- Waldkrankenhaus GmbH, Eisenberg, Chair of Orthopaedics University Jena, Germany
| | - Matthias Hösl
- Orthopaedic Hospital for Children, Behandlungszentrum Aschau gGmbH, Aschau/Chiemgau, Germany
| | - Leonhard Döderlein
- Orthopaedic Hospital for Children, Behandlungszentrum Aschau gGmbH, Aschau/Chiemgau, Germany
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