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Ueyama H, Minoda Y, Sugama R, Ohta Y, Takemura S, Nakamura H. Mobile-bearing prosthesis suppresses the postoperative rotational mismatch and improves patient-reported outcome measurements better than fixed-bearing prosthesis: rotational analysis by 3D measurement in total knee arthroplasty. Arch Orthop Trauma Surg 2023; 143:6781-6790. [PMID: 37418005 DOI: 10.1007/s00402-023-04971-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 06/26/2023] [Indexed: 07/08/2023]
Abstract
INTRODUCTION It is preferable to reduce postoperative excessive rotational mismatch between the femur and tibia that causes poor clinical results following total knee arthroplasty (TKA). The aim of this study is to compare postoperative rotational mismatches and clinical outcomes with mobile- and fixed-bearing prostheses. MATERIALS AND METHODS This study classified 190 TKAs into two groups equally by propensity score matching: mobile-bearing group (n = 95) and fixed-bearing group (n = 95). Computed tomography images of the whole leg were taken at 2 weeks postoperatively. The component alignments, rotational mismatches between the femur and tibia, and rotations among components were measured three-dimensionally. The knee range of motion, New Knee Society Score (KSS) subjective sores, and Forgotten Joint Score (FJS-12) were assessed at the final follow-up. RESULTS Rotational mismatch between the femur and tibia was significantly less in the mobile- (- 0.8° ± 7.3°) than in the fixed-bearing (3.3° ± 8.5°, p < 0.001) group. New KSS functional activity score was significantly poorer in patients with excessive rotational mismatch (61.3 ± 21.4) than in those without it (49.5 ± 20.6, p = 0.02). Comparing mobile-bearing prosthesis, the use of fixed-bearing prosthesis was a risk factor for postoperative excessive rotational mismatch (odds ratio: 2.32, p = 0.03). CONCLUSION When compared to a fixed-bearing prosthesis, TKA using a mobile-bearing prosthesis could suppress the postoperative rotational mismatch between the femur and tibia that causes poor subjective functional activity score. However, since this study was conducted for PS-TKA, the results might not be applicable to other models.
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Affiliation(s)
- Hideki Ueyama
- Orthopedic Surgery, Osaka Rosai Hospital, 1179-3 Nagasonecho, Kitaku, Sakai, Osaka, 591-8025, Japan.
- Department of Orthopedic Surgery, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan.
| | - Yukihide Minoda
- Department of Orthopedic Surgery, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan
| | - Ryo Sugama
- Department of Orthopedic Surgery, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan
| | - Yoichi Ohta
- Department of Orthopedic Surgery, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan
| | - Susumu Takemura
- Orthopedic Surgery, Osaka Rosai Hospital, 1179-3 Nagasonecho, Kitaku, Sakai, Osaka, 591-8025, Japan
| | - Hiroaki Nakamura
- Department of Orthopedic Surgery, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan
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Park S, Lim W. Comparison of muscle activity of hamstrings as knee flexors and hip extensors and effect of tibial and hip rotation on the contribution of hamstrings. J Bodyw Mov Ther 2023; 34:1-5. [PMID: 37301549 DOI: 10.1016/j.jbmt.2023.04.029] [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: 09/22/2021] [Revised: 01/25/2023] [Accepted: 04/11/2023] [Indexed: 06/12/2023]
Abstract
BACKGROUND Limited studies have compared the muscle activity of the medial and lateral hamstrings as knee flexors with tibial internal and external rotation and hip extensors with hip internal and external rotation. In particular, hamstring activity during hip extension with hip rotation has rarely been investigated. OBJECTIVE This study aimed to compare the muscle activity of the medial and lateral hamstrings as knee flexors and hip extensors and to compare the activity of these muscles according to tibial rotation during isometric knee flexion and hip rotation during isometric hip extension. METHODS A total of 23 healthy adults participated in the study. The electromyographic (EMG) activity of the hamstrings was measured during maximal isometric knee flexion and maximal isometric hip extension. In addition, tibial rotation was applied actively during maximal isometric knee flexion, whereas hip rotation was applied actively during maximal isometric hip extension. RESULTS EMG activity during maximal isometric knee flexion with tibial internal and external rotation was significantly higher than that during maximal isometric hip extension with hip internal and external rotation, respectively. For EMG activity according to tibial and hip rotation, there was no significant difference between tibial internal and external rotation during maximal isometric knee flexion, whereas there was a significant difference between hip internal and external rotation during maximal isometric hip extension. CONCLUSION Hamstring activity was higher for knee flexors than for hip extensors. However, hip rotation during maximal isometric hip extension is an effective intervention for selective muscle activation of the medial and lateral hamstrings.
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Affiliation(s)
- Sieun Park
- Department of Physical Therapy, Gumi University, Gumi, Republic of Korea
| | - Wootaek Lim
- Department of Physical Therapy, College of Health and Welfare, Woosong University, Daejeon, Republic of Korea; Woosong Institute of Rehabilitation Science, Daejeon, Republic of Korea.
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Chen Z, Ye X, Shen Z, Wang Y, Wu Z, Chen G, Guan Y, Wu J, Jiang T, Wu H, Liu W, Xu X. Comparison of the Asymmetries in Foot Posture and Properties of Gastrocnemius Muscle and Achilles Tendon Between Patients With Unilateral and Bilateral Knee Osteoarthritis. Front Bioeng Biotechnol 2021; 9:636571. [PMID: 34738007 PMCID: PMC8561212 DOI: 10.3389/fbioe.2021.636571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 08/23/2021] [Indexed: 12/31/2022] Open
Abstract
Background: Asymmetrical foot posture and properties alterations of the gastrocnemius muscle (GM) and Achilles tendon (AT) were observed in knee osteoarthritis (KOA). We aimed to investigate the inter-limbs asymmetries in foot posture and the properties of GM and AT and explore the association between them. Methods: A total of 62 subjects with unilateral or bilateral KOA were included in this study: 30 patients with unilateral pain and 32 patients with bilateral pain were assigned to the bilateral group (BG) and unilateral group (UG), respectively. The relatively serious leg (RSL) and relatively moderate leg (RML) were judged according to the severity of symptoms assessed by using visual analogue scale (VAS) motion. Foot posture and asymmetrical foot posture scores were assessed based on Foot Posture index (FPI-6). Subsequently, all the participants received an assessment for properties of GM and AT, including tone/tension (Hz), stiffness (N/m), and elasticity. We calculated the asymmetry index of AT (Asy-AT) in both legs and the difference of muscle properties between medial and lateral gastrocnemius (D-MLG) in the ipsilateral limb. Results: Asymmetry of foot posture was categorized into three types including normal, asymmetry, and severe asymmetry. The percentage of subjects classified as normal was higher in the BG (62.5%) than in the UG (36.67%), p < 0.05. Tension of AT and tone of lateral gastrocnemius (LG) in RSL were higher than those in RML (15.71 ± 0.91 vs. 15.23 ± 1.01; 25.31 ± 2.09 vs. 23.96 ± 2.08, p < 0.01 and p < 0.01, respectively), and stiffness of AT in the RSL was higher than that in RML (676.58 ± 111.45 vs. 625.66 ± 111.19, p < 0.01). Meanwhile, a positive relationship was found between ipsilateral FPI and tone of MG and LG in the left leg (0.246 per degree, 95% CI: −0.001, 0.129; p = 0.054 and 0.293 per degree, 95% CI: −0.014, 0.157; p = 0.021, respectively) and right leg (0.363 per degree, 95% CI: 0.033, 0.146; p = 0.004 and 0.272 per degree, 95% CI: 0.007, −0.144; p = 0.032, respectively). Moreover, a positive link was observed between asymmetrical FPI scores and K/L grade (0.291 per degree, 95% CI: 0.018, 0.216; p = 0.022). Furthermore, a significantly greater Asy-AT(tension) was detected in the UG than that in the BG (UG vs. UG: 8.20 ± 5.09% vs. 5.11 ± 4.72%, p < 0.01). Additionally, an increased asymmetrical FPI score (i.e., more severe asymmetry) was significantly associated with increases in Asy-AT(tension) and Asy-AT(stiffness) (0.42 per degree, 95% CI: 0.533, 1.881; p = 0.001 and 0.369 per degree, 95% CI: 0.596, 2.82; p = 0.003, respectively). Conclusions: The stiffness and tension of AT and the tone of LG in RSL were higher than those in RML in KOA patients, and inter-limbs foot posture and tension of AT were more asymmetrical in unilateral KOA patients compared to patients with bilateral KOA. Notably, foot posture, as an important biomechanical factor, was significantly associated with properties of GM, AT, and K/L grade in KOA patients.
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Affiliation(s)
- Zehua Chen
- The Fifth Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiangling Ye
- The Fifth Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhen Shen
- Kunming Municipal Hospital of Traditional Chinese Medicine, Kunming, China
| | - Yi Wang
- The Fifth Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zugui Wu
- The Fifth Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Guoqian Chen
- Department of Orthopaedic Surgery, Zhejiang Provincial Hospital of Chinese Medicine, Hangzhou, China
| | - Yingxin Guan
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine/Zhuhai Hospital of Guangdong Province Traditional Chinese Medical Hospital, Zhuhai, China
| | - Jiatao Wu
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine/Zhuhai Hospital of Guangdong Province Traditional Chinese Medical Hospital, Zhuhai, China
| | - Tao Jiang
- The Fifth Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China.,Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, China
| | - Huai Wu
- The Fifth Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China.,Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, China
| | - Wengang Liu
- The Fifth Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China.,Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, China
| | - Xuemeng Xu
- The Fifth Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China.,Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, China
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Biceps Femoris Activation during Hamstring Strength Exercises: A Systematic Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18168733. [PMID: 34444481 PMCID: PMC8393607 DOI: 10.3390/ijerph18168733] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/09/2021] [Accepted: 08/11/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND The aim of the study was to systematically evaluate the biceps femoris long head activation across cross-sectional hamstring strength exercise studies. METHODS A systematic review design was followed. The search strategy conducted in PubMed, Cochrane Library, and Web of Sciences databases found a total of 3643 studies. Once inclusion and exclusion criteria were applied, 29 studies were finally included in this systematic review. A total of 507 participants and 114 different exercises were analyzed. Exercises were evaluated individually and grouped into several categories: Nordics, isokinetic exercises, lunges, squats, deadlifts, good mornings, hip thrusts, bridges, leg curls, swings, hip and back extensions, and others. RESULTS Results showed the isokinetic and Nordic exercises as the categories with highest biceps femoris activation (>60% of Maximal Voluntary Isometric Contraction). Nordic hamstring exercise ankle dorsiflexion was the exercise that achieved the highest biceps femoris long head activation (128.1% of its Maximal Voluntary Isometric Contraction). CONCLUSIONS The results from this systematic review suggest that isokinetic and Nordic exercises seem to be the best option to activate biceps femoris long head. Future studies evaluating the implementation of these exercises in prevention programs are needed.
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Hegyi A, Csala D, Kovács B, Péter A, Liew BXW, Yue Y, Finni T, Tihanyi J, Cronin NJ. Superimposing hip extension on knee flexion evokes higher activation in biceps femoris than knee flexion alone. J Electromyogr Kinesiol 2021; 58:102541. [PMID: 33706051 DOI: 10.1016/j.jelekin.2021.102541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 01/24/2021] [Accepted: 03/01/2021] [Indexed: 01/12/2023] Open
Abstract
Hamstring muscle function during knee flexion has been linked to hamstring injury and performance. However, it is unclear whether knee flexion alone (KF) requires similar hamstring electromyography (EMG) activity pattern to simultaneous hip extension and knee flexion (HE-KF), a combination that occurs in the late swing phase of sprinting. This study examined whether HE-KF maximal voluntary isometric contraction (MVIC) evokes higher (EMG) activity in biceps femoris long head (BFlh) and semitendinosus (ST) than KF alone. Effects of shank rotation angles were also tested. Twenty-one males performed the above-mentioned MVICs while EMG activity was measured along ST and BFlh. Conditions were compared using a one-way mixed functional ANOVA model under a fully Bayesian framework. Higher EMG activity was found in HE-KF in all shank rotation positions than in KF in the middle region of BFlh (highest in the 9th channel, by 0.022 mV [95%CrI 0.014 to 0.030] in neutral shank position). For ST, this was only observed in the neutral shank position and in the most proximal channel (by 0.013 mV [95%CrI 0.001 to 0.025]). We observed muscle- and region-specific responses to HE-KF. Future studies should examine whether hamstring activation in this task is related to injury risk and sprint performance.
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Affiliation(s)
- A Hegyi
- Neuromuscular Research Center, Faculty of Sport and Health Sciences, University of Jyvaskyla, Finland; Laboratory "Movement, Interactions, Performance", Faculty of Sport Sciences, University of Nantes, France.
| | - D Csala
- Department of Kinesiology, University of Physical Education, Budapest, Hungary
| | - B Kovács
- Department of Kinesiology, University of Physical Education, Budapest, Hungary
| | - A Péter
- Neuromuscular Research Center, Faculty of Sport and Health Sciences, University of Jyvaskyla, Finland
| | - B X W Liew
- School of Sport, Rehabilitation and Exercise Sciences, University of Essex, Colchester, Essex CO4 3SQ, United Kingdom
| | - Y Yue
- Paul H. Chook Department of Information Systems and Statistics, Zicklin School of Business, Baruch College, The City University of New York, United States
| | - T Finni
- Neuromuscular Research Center, Faculty of Sport and Health Sciences, University of Jyvaskyla, Finland
| | - J Tihanyi
- Department of Kinesiology, University of Physical Education, Budapest, Hungary
| | - N J Cronin
- Neuromuscular Research Center, Faculty of Sport and Health Sciences, University of Jyvaskyla, Finland; School of Sport and Exercise, University of Gloucestershire, UK
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Effects of knee flexor submaximal isometric contraction until exhaustion on semitendinosus and biceps femoris long head shear modulus in healthy individuals. Sci Rep 2020; 10:16433. [PMID: 33009453 PMCID: PMC7532170 DOI: 10.1038/s41598-020-73433-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 09/16/2020] [Indexed: 02/06/2023] Open
Abstract
This study examined whether a knee flexor isometric contraction at 20% of maximal voluntary isometric contraction until exhaustion would alter the biceps femoris long head (BFlh) and semitendinosus (ST) active stiffness, assessed using ultrasound-based shear wave elastography. Twelve healthy individuals participated in 2 sessions separated by 7 days. Time to exhaustion was similar in both sessions (day 1: 443.8 ± 192.5 s; day 2: 474.6 ± 131.7 s; p = 0.323). At the start of the fatigue task, the ST showed greater active stiffness than the BFlh (p < 0.001), with no differences between days (p = 0.08). The ST active stiffness then decreased from 40% of the task time to exhaustion (− 2.2 to − 13.3%, p = 0.027) until the end of the task (− 16.1 to − 22.9%, p = 0.012), while no significant changes were noted in the BFlh (p = 0.771). Immediately after the fatigue task, a decrease in active stiffness was observed in the ST (− 11.8 to − 17.8%, p < 0.001), but not in the BFlh (p = 0.551). Results were consistent between the 2 testing sessions (p = 0.07–0.959). The present results indicate that fatigue alters the hamstring active stiffness pattern.
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Sharifi M, Shirazi-Adl A, Marouane H. Sensitivity of the knee joint response, muscle forces and stability to variations in gait kinematics-kinetics. J Biomech 2020; 99:109472. [DOI: 10.1016/j.jbiomech.2019.109472] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 10/24/2019] [Accepted: 10/26/2019] [Indexed: 10/25/2022]
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Šarabon N, Marušič J, Marković G, Kozinc Ž. Kinematic and electromyographic analysis of variations in Nordic hamstring exercise. PLoS One 2019; 14:e0223437. [PMID: 31644582 PMCID: PMC6808554 DOI: 10.1371/journal.pone.0223437] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 09/20/2019] [Indexed: 11/18/2022] Open
Abstract
The purpose of this study was to present and biomechanically evaluate several variations of the Nordic hamstring exercise (NHE), achieved by altering the slope of the lower leg support and by asumming different hip flexion angles. Electromyographic and 2D kinematic measurements were conducted to analyse muscle activity (biceps femoris, semitendinosus, gluteus maximus, erector spine and lateral head of the gastrocnemius), knee and hip joint torques during 6 variations of NHE. The study involved 18 adults (24.9 ± 3.7 years) with previous experience in resistance training, but with little or no experience with NHE. Increasing the slope of the lower leg support from 0° (standard NHE) to 20° and 40° enabled the participants to perform the exercise through a larger range of motion, while achieving similar peak knee and hip torques. Instructions for increased hip flexion from 0° (standard NHE) to 25°, 50° and 75° resulted in greater peak knee and hip torque, although the participants were not able to maintain the hip angle at 50° nor 75°. Muscle activity decreased or remained similar in all modified variations compared to the standard NHE for all measured muscles. Our results suggest that using the presented variations of NHE might contribute to optimization of hamstring injury prevention and rehabilitation programs, by providing appropriate difficulty for the individual’s strength level and also allow eccentric strengthening at longer hamstring lengths.
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Affiliation(s)
- Nejc Šarabon
- University of Primorska, Faculty of Health Sciences, Izola, Slovenia
- S2P, Science to practice, Ltd., Laboratory for Motor Control and Motor Behavior, Ljubljana, Slovenia
- * E-mail:
| | - Jan Marušič
- University of Primorska, Faculty of Health Sciences, Izola, Slovenia
| | - Goran Marković
- University of Zagreb, Faculty of Kinesiology, Zagreb, Croatia
- Motus Melior Ltd., Zagreb, Croatia
| | - Žiga Kozinc
- University of Primorska, Faculty of Health Sciences, Izola, Slovenia
- University of Primorska, Andrej Marušič Institute, Koper, Slovenia
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Beuchat A, Maffiuletti NA. Foot rotation influences the activity of medial and lateral hamstrings during conventional rehabilitation exercises in patients following anterior cruciate ligament reconstruction. Phys Ther Sport 2019; 39:69-75. [DOI: 10.1016/j.ptsp.2019.06.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 06/11/2019] [Accepted: 06/19/2019] [Indexed: 11/30/2022]
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Kawakami S, Fujisawa H. Kinetic analysis of tandem gait on a sine-wave-shaped walkway. J Phys Ther Sci 2019; 31:649-655. [PMID: 31528003 PMCID: PMC6698478 DOI: 10.1589/jpts.31.649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 05/27/2019] [Indexed: 11/24/2022] Open
Abstract
[Purpose] The purpose of this study was to ascertain the kinetic characteristics on a horizontal plane, including knee joint rotation, when performing tandem gait on a sine-wave walkway. [Participants and Methods] The participants were 10 healthy adults. The movement task included tandem gait on a sine-wave walkway. The instruments used were an electromyograph and a three-dimensional motion analysis system. Regarding data analysis, we determined the knee joint rotation angle and muscle activity of the biceps femoris and semitendinosus muscle. [Results] The knee joint rotation angle range was 48.1 ± 6.7°. Two strategies were confirmed with regard to the direction of knee joint rotation: a case in which the agonist muscle acts actively and a case in which the antagonist muscle acts passively. [Conclusion] It has been suggested that the knee joint rotational angle and muscular activity of the rotator muscle group are important for tandem gait on a sine-wave-shaped walking path.
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Affiliation(s)
- Shingo Kawakami
- Department of Rehabilitation, Sendai Rehabilitation
Hospital: 1-3-1 Narita, Tomiya-shi, Miyagi 981-3341, Japan,Corresponding author. Shingo Kawakami (E-mail: )
| | - Hiroyuki Fujisawa
- Department of Rehabilitation, Faculty of Medical Science
& Welfare, Tohoku Bunka Gakuen University, Japan
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Blandford L, McNeill W, Charvet I. Can we spread the risk? A demand-share perspective to sustained hamstring health. J Bodyw Mov Ther 2018; 22:766-779. [PMID: 30100311 DOI: 10.1016/j.jbmt.2018.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Lincoln Blandford
- Movement Performance Solutions Ltd, The Quorum, Bond Street South, Bristol, BS1 3AE, UK.
| | | | - Ingrid Charvet
- Department of Civil, Environmental & Geomatic Engineering, University College London, WC1E 6BT, UK.
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WITHDRAWN: Can we spread the risk? A demand-share perspective to sustained hamstring health. Biomaterials 2018. [DOI: 10.1016/j.biomaterials.2018.06.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Lee DS, Choung SD, Lee SW, Suh HR, Shim JH. The ratio of medial and lateral hamstring muscle thickness does not correlate with the lateral tibial rotation angle in the standing position in healthy young adults. J Phys Ther Sci 2017; 29:618-621. [PMID: 28533596 PMCID: PMC5430259 DOI: 10.1589/jpts.29.618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 12/19/2016] [Indexed: 11/24/2022] Open
Abstract
[Purpose] To investigate the relationship between the lateral tibial rotation angle during knee joint flexion and the medial and lateral hamstring muscle thickness ratio during knee joint extension while resting, doing nothing, in upright standing position. The lateral tibial torsion is an important factor of orthopedic knee joint diseases as well as other weight bearing joint diseases such as osteoarthritis, meniscus syndrome, anterior cruciate ligament rupture, etc. [Subjects and Methods] Thirty healthy young adults participated in this study. The thickness of the medial and lateral hamstrings was measured using ultrasonographic imaging technique during knee extension in a resting position. The angle of tibial rotation was measured with 2D motion analysis during knee flexion in a half kneeling position. Pearson's correlation coefficient was used to test the relationship. [Results] There is no significant relationship between the angle of lateral tibial rotation and the ratio of hamstring muscle thickness. [Conclusion] These results demonstrate that lateral tibial rotation is not affected by hamstrings during rest in a standing position.
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Affiliation(s)
- Dong-Soo Lee
- Department of Physical Therapy, Division of Health Science, Baekseok University, Republic of Korea
| | - Sung-Dae Choung
- Department of Physical Therapy, Division of Health Science, Baekseok University, Republic of Korea
| | - Seung-Won Lee
- Department of Social Welfare, Baekseok University, Republic of Korea
| | - Hye Rim Suh
- Department of Medical science, Division of Biomedical Science, Korea University, Republic of Korea
| | - Jae-Hoon Shim
- Department of Physical Therapy, Division of Health Science, Baekseok University, Republic of Korea
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Van Hooren B, Bosch F. Is there really an eccentric action of the hamstrings during the swing phase of high-speed running? Part II: Implications for exercise. J Sports Sci 2016; 35:2322-2333. [DOI: 10.1080/02640414.2016.1266019] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Bas Van Hooren
- School of Sport Studies, Fontys University of Applied Sciences, Eindhoven, The Netherlands
| | - Frans Bosch
- School of Sport Studies, Fontys University of Applied Sciences, Eindhoven, The Netherlands
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