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Objective To explore the correlation of bilateral knee joint strength asymmetry with balance, walking ability, and motor function in hemiplegic stroke patients, providing a reference for clinical assessment of stroke patients. Methods A total of 46 hemiplegic stroke patients admitted to the Rehabilitation Medicine Department of People's Hospital of Shijiazhuang from February to December 2023 were selected. According to the Berg Balance Scale (BBS) scores, patients were divided into Group A (BBS score ≤20, n=23) and Group B (BBS score >20, n=23). The peak torque and differences of bilateral knee flexors and extensors were compared between two groups. Isokinetic technology was used to assess the differences in peak torque of bilateral knee joints at 60°/s and 120°/s. BBS, Functional Ambulation Classification (FAC), and Fugl-Meyer Assessment of Lower Extremity (FMA-LE) were used to evaluate patients' balance, walking ability, and lower limb motor function. The correlation between bilateral knee joint peak torque and its difference with the scores of three functional scales was analyzed. Results The peak torque of knee flexors and extensors at 60°/s in group A was significantly lower than that in group B (P<0.05). At both 60°/s and 120°/s the differences in peak torque between the healthy and affected sides of knee flexors and extensors were greater than those in group B (P<0.05). At 60°/s, the difference in peak torque of bilateral knee extensors in hemiplegic stroke patients was negatively correlated with the scores of BBS, FAC, and FMA-LE (r=-0.569, -0.582, -0.606, P<0.01), as did the knee flexors (r=-0.534, -0.386, -0.458, P<0.05). At 120°/s, similar negative correlations were observed for both knee extensors (r=-0.304, -0.304, -0.443, P<0.05) and flexors (r=-0.337, -0.349, -0.370, P<0.05). Conclusions Bilateral knee joint strength asymmetry in hemiplegic stroke patients is negatively correlated with balance and walking ability. The difference in strength between the two sides of knee joint may be one of the clinical indicators for evaluating the motor function of stroke patients.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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