類風濕關節炎病人肌力變化力探討：電腦肌電圖分析

The Study of Muscle Weakness in Rheumatoid Arthritis: With Computerized EMG

潘筱萍 ； 詹瑞棋 ； 徐道昌

《中華民國復健醫學會雜誌》 13期 (1985/12) Pp. 13-18

摘要

為探討類風濕關節炎病人，骨骼肌無力的原因，分別於39位類風濕關節炎患者及35位正常人(對照組)，作二方面的檢查：以肌力測量器，量出最大握力、三指搯力、及外展短姆肌之伸展力，(2)用電腦肌電圖，簡便、快速地測出外展短姆肌肌電波誘發電位(EMAP)之波幅、間期及表面積(1,2)。此外，亦同時記錄了病人的功能狀況、骨骼變化、患病時間、用藥，與疼痛關節的位置。
研究結果顯示:(1)肌力和肌電波誘發電位，無特別相關;(2)類風濕關節炎患者與正常人間，肌電波誘發電位也無顯著差別。故由電腦肌電圖測得肌電波誘發電位，並不是篩選或評估類風濕關節炎患者肌無力的利器。另外，除了疼痛，關節變形、長期使用不良、或服用的藥物，似乎均非類風濕關節炎患者肌無力之主因。

並列摘要

Weakness and atrophy of skeletal muscles are found commonly in patients suffering from rheumatoid arthritis, but the reasons of this phenomenon are still questionable.
39 RA patients and 35 normal persons, as control group, were examed in 2 aspects: 1)Maximal muscle strength including grasp, 3 jaw-chuck and palmar abduction of thumb; 2)Evoked uscle action potential(EMAP) of APB, using computer measurement of the amplitude, duration and surface. (1,2)V Besides, functional class, stage of bony change, duration of the disease, medication, painful joints were also taken into consideration. Comparison between the muscle strength and the quantified EMAP in RA patients and control group revealed.
1) Poor correlation between muscle strength and EMAP
2) no statistically significant difference of quantified EMAP between normal persons and patients with rheumatoid arthritis; therefore, the quantified EMAP (with computerized EMG) is not an ideal method of screening or evaluating the muscle strength changes in patients with reheumatoid arthritis.
The results also revealed that joint deformity, disuse atrophy or medication seemed not the main reasons of muscle weakness in rehumatoid arthritic patients, except pain.

並列關鍵字

Evoked Muscle Action Potential ； EMAP ； Amplitude ； Duration ； Surface area ； Muscle strength