Short-term effect of unicompartmental knee arthroplasty on muscle coordination in patients with knee osteoarthritis

IF 1.4 3区医学 Q4 ENGINEERING, BIOMEDICAL

Clinical Biomechanics Pub Date : 2025-03-18 DOI:10.1016/j.clinbiomech.2025.106496

Zhixin Jin , Jingnan Shi , Haohua Zhang , Kuan Zhang , Xinglong Zhou , Songhua Yan

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引用次数: 0

Abstract

Backgrouds

Over 60 % of knee osteoarthritis patients report experiencing the “giving way” phenomenon. This study aims to investigate the alterations in coordinated muscle contraction around the knee joint when the knee joint suddenly buckles under force, similar to “giving way”, in the patients before and after unicompartmental knee arthroplasty.

Methods

Twenty-five patients and 20 healthy adults were recruited to test the difference of muscle coordination between the patients before and about three months after surgery and healthy individuals. The self-designed force application equipment and a wireless surface electromyography system were used to collect the data on muscles activation when the legs were hit. The standard of significant difference was set as P < 0.05.

Findings

There were significant differences between the test and control groups in the directed co-contraction ratios of the hamstring/quadriceps(P = 0.016) and the co-contraction index of the quadriceps-hamstring(P < 0.001) on the affected side, as well as in the directed co-contraction ratios of the biceps femoris/vastus lateralis(P = 0.020) on the unaffected side. Compared with data before the surgery, in directed co-contraction ratios and co-contraction index there was only a significant difference in directed co-contraction ratios of vastus lateralis/vastus medialis on the affected side(P < 0.001) but there were significant differences in the co-contraction index of quadriceps-hamstring(P = 0.004) and vastus medialis-semitendinosus(P = 0.001) on the unaffected side after the surgery.

Interpretation

knee osteoarthritis affected the pattern of muscle co-contraction. In the short-term after the surgery, the co-contraction level in the affected side of patients did not have an obvious recovery but the activation level was improved, approaching healthy individuals.

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来源期刊

Clinical Biomechanics 医学-工程：生物医学

CiteScore

3.30

自引率

5.60%

发文量

189

审稿时长

12.3 weeks

期刊介绍： Clinical Biomechanics is an international multidisciplinary journal of biomechanics with a focus on medical and clinical applications of new knowledge in the field. The science of biomechanics helps explain the causes of cell, tissue, organ and body system disorders, and supports clinicians in the diagnosis, prognosis and evaluation of treatment methods and technologies. Clinical Biomechanics aims to strengthen the links between laboratory and clinic by publishing cutting-edge biomechanics research which helps to explain the causes of injury and disease, and which provides evidence contributing to improved clinical management. A rigorous peer review system is employed and every attempt is made to process and publish top-quality papers promptly. Clinical Biomechanics explores all facets of body system, organ, tissue and cell biomechanics, with an emphasis on medical and clinical applications of the basic science aspects. The role of basic science is therefore recognized in a medical or clinical context. The readership of the journal closely reflects its multi-disciplinary contents, being a balance of scientists, engineers and clinicians. The contents are in the form of research papers, brief reports, review papers and correspondence, whilst special interest issues and supplements are published from time to time. Disciplines covered include biomechanics and mechanobiology at all scales, bioengineering and use of tissue engineering and biomaterials for clinical applications, biophysics, as well as biomechanical aspects of medical robotics, ergonomics, physical and occupational therapeutics and rehabilitation.