The influence of functional electrical stimulation on the properties of vastus lateralis fibres following total knee arthroplasty.
The influence of functional electrical stimulation on the properties of vastus lateralis fibres following total knee arthroplasty.
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功能性电刺激对全膝关节置换术后股外侧肌纤维特性的影响。
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
Coutts Rd
中科院分区：
文献类型：
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作者：
Martin Tp;Gundersen La;Blevins Ft;Coutts Rd
在骨关节炎全膝关节置换术后恢复的患者中，研究了功能性电肌肉刺激 (FES) 对股外侧肌纤维的选定特性的影响。在手术之前，平均而言，来自股外侧肌的肌肉活检可被表征为以 I 型纤维为主，其横截面积明显大于同一样本中的 II 型纤维。手术后，接受连续被动运动且未接受 FES 的一组患者 (n = 7) 的肌肉活检显示 II 型纤维的比例显着增加，同时 I 型和 II 型纤维普遍萎缩。接受被动运动和 FES 的患者 (n = 9) 也显示出 II 型纤维的相对百分比有所增加。然而，术后，受刺激肌肉的纤维面积没有显着减少。这些数据表明，FES 可有效减轻与全膝关节置换术相关的肌肉萎缩，但对与肌纤维类型分类标准相关的代谢特性没有影响。
The influence of functional electrical muscle stimulation (FES) on selected properties of vastus lateralis muscle fibres was studied in patients recovering from total knee arthroplasty for osteoarthritis. Prior to surgery, on the average, muscle biopsies from the vastus lateralis could be characterized as having a predominance of Type I fibres which were significantly larger in cross-sectional area than the Type II fibres in the same sample. Following surgery, muscle biopsies from a group of patients (n = 7) which received continuous passive motion and no FES, exhibited a marked increase in the proportion of Type II fibres along with a general atrophy of both the Type I and Type II fibres. Patients receiving passive motion and FES (n = 9) also showed an increase in the relative percentage of Type II fibres. Post-operatively, however, there was no significant reduction in fibre area in the stimulated muscles. These data suggest that FES was effective in attenuating the muscle atrophy associated with total knee arthroplasty but had no influence on those metabolic properties which were related to muscle fibre type classification criteria.