Isokinetic evaluation of hip strength muscle groups in unilateral lower limb amputees

Croisier, Jean-Louis; Noordhout, B. Maertens de; Maquet, Didier; Camus, G.; Hać, Stanisław; Féron, François; Lamotte, O. De; Crielaard, J M

doi:10.3233/ies-2001-0080

Cited by 19 publications

(28 citation statements)

References 19 publications

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“…Considering the thigh of the amputated side is smaller, and that the prosthesis has less mass than the limb it replaced, one should assume there are differences in the inertial properties of each limb. These results, combined with results from other studies (Croisier et al, 2001;Isakov et al, 1996;Pedrinelli et al, 2002;Schmalz et al, 2001), may explain most of the differences in force asymmetry given the limitations of these data.…”

Section: Discussionsupporting

confidence: 50%

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Pedaling Asymmetries in Cyclists With Unilateral Transtibial Amputation: Effect of Prosthetic Foot Stiffness

Childers

Kistenberg²,

Gregor³

2011

Journal of Applied Biomechanics

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Cyclists with unilateral transtibial amputation (CTA) provide a unique model to study integration of the neuromuscular and bicycle systems while having the option to modify this integration via the properties of the prosthesis. This study included eight CTA and nine intact cyclists. The cyclists pedaled on a stationary bicycle with instrumented force pedals. The CTA group pedaled with a stiff or flexible prosthetic foot during a simulated time trial and a low difficulty condition. During the time trial condition, pedaling with the flexible foot resulted in force and work asymmetries of 11.4% and 30.5%, the stiff foot displayed 11.1% and 21.7%, and the intact group displayed 4.3% and 4.2%, respectively. Similar trends were shown in the low difficulty condition. These data suggest foot stiffness has an effect on cycling symmetry in amputees.

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Section: Discussionsupporting

confidence: 50%

“…The force asymmetry of CTA is more than twice that of intact cyclists and may be explained by documented strength imbalance between limbs for persons with amputation (Croisier et al, 2001;Isakov et al, 1996;Pedrinelli et al, 2002). Loss of the ankle joint and the muscles that control it could account, in part, for the strength imbalance.…”

Section: Discussionmentioning

confidence: 99%

Pedaling Asymmetries in Cyclists With Unilateral Transtibial Amputation: Effect of Prosthetic Foot Stiffness

Childers

Kistenberg²,

Gregor³

2011

Journal of Applied Biomechanics

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“…Observa-se também uma média de pico de torque mais elevada no grupo muscular de extensores quando comparado aos flexores. Os músculos extensores do quadril de amputados podem apresentar mecanismos de adaptação muscular no lado protético, pois os extensores do quadril devem fornecer mais poder para facilitar a propulsão e manter os parâmetros de marcha como velocidade, comprimento do passo, tempo, postura e cadência [5,10].…”

Section: Resultsunclassified

“…Os amputados transfemorais apresentam significativa redução da força no membro amputado comparado ao não amputado [5].…”

Section: Introductionunclassified

Evaluation of hip transfemoral amputees during isometric contraction in isokinetic dynamometer

Marães

Cruz

Moreira

et al. 2013

2013 Pan American Health Care Exchanges (PAHCE)

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The transfemoral amputation leads to a series of changes in functional biomechanics body that can interfere with daily life of the amputee can generate patterns of posture and gait to compensate for the loss of the limb. This study aims to evaluate and compare the responses of hip muscle during isometric transfemoral amputees, using an isokinetic dynamometer. The study included four volunteers, two amputees and two non-amputees. Evaluation was performed using an isokinetic dynamometer in isometric angles of 30 degrees and 60 with duration of 10 seconds. Each series had a total of six repetitions, counting three pushups and three extensions and an interval of 20 seconds for each repetition. It is observed that the amputated limb has a lower peak torque compared to the non-amputee, in flexion and extension of the hip 30 and 60 degrees. Because amputation, individuals have less muscle strength hip, which may impair daily activities such as walking, sitting and standing, up and down stairs.

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“…An essential factor improving the patient's quality of gait is to progress the activities of a physiotherapist or through activity in the sport of people with disabilities. Hence, researchers' interests are focused on assessing the degree of asymmetry of muscle strength, acting on the hip joint [20,23,24]. It is also indicated that sports training, which enhances muscle strength, may be an effective form of patient therapy.…”

Section: Introductionmentioning

confidence: 99%

Symmetry function as a new tool for evaluating the symmetry of gait in transfemoral amputees

Winiarski

Rutkowska-Kucharska

Kowal

2020

Preprint

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Background: Numerous studies have demonstrated significant asymmetries in unilateral amputee gait. The underlying dissimilarities between prosthetic and intact limbs have not yet been widely examined. To gain more insight into the functionality of asymmetries, we propose a new tool, the symmetry function (SF), to evaluate the symmetry of walking in terms of kinematic and dynamic variables of patients after unilateral transfemoral amputation and to identify areas with the largest side deviations in the movement cycle. Methods: An instrumented motion analysis system was used to register the gait of fourteen patients after unilateral trans-femoral amputation (TFA). Measurements involved evaluating the time series of gait variables characterizing a range of motion and the time series of the ground reaction force components. Comparison of the involved limb with the uninvolved limb in TFA patients was carried out on the basis of the SF values.Results: The symmetry function proved to be an excellent tool to localize the regions of asymmetry and their positive or negative directions in the full gait cycle. The difference between sides revealed by the symmetry function was the highest for the pelvis and the hip. In the sagittal plane, the pelvis was asymmetrically tilted, reaching the highest SF value of more than 25% at 60% cycle time. In the transverse plane, the pelvis was even more asymmetrically positioned throughout the entire gait cycle (50% difference on average). The hip in the frontal plane reached a 60% difference in SF throughout the single support phase for the prosthetic and then for the intact limb. Conclusions: The symmetry function allows for the detection of gait asymmetries and shifts in the center of gravity and may assess the precise in time adaptation of prostheses and rehabilitation monitoring, especially in unilateral impairments.Trial registration: The trial registration number (TRN): 379991 issued by the Australian New Zealand Clinical Trials Registry (ANZCTR) on 07.05.2020 (retrospectively registered).

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Isokinetic evaluation of hip strength muscle groups in unilateral lower limb amputees

Cited by 19 publications

References 19 publications

Pedaling Asymmetries in Cyclists With Unilateral Transtibial Amputation: Effect of Prosthetic Foot Stiffness

Pedaling Asymmetries in Cyclists With Unilateral Transtibial Amputation: Effect of Prosthetic Foot Stiffness

Evaluation of hip transfemoral amputees during isometric contraction in isokinetic dynamometer

Symmetry function as a new tool for evaluating the symmetry of gait in transfemoral amputees

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