Lamoreaux L, Hoffer M M
Rancho Los Amigos Medical Center, Downey, CA, USA.
Clin Orthop Relat Res. 1995 May(314):152-5.
The effect of wrist deviation on grip and pinch strength was evaluated in 12 normal right-handed adults. Wrist positions of neutral, maximal ulnar (average, 41 degrees), and maximal radial deviation (average, 26 degrees) were held in short-arm casts while grip and key and tip pinch were measured. Wrist position was neutral with respect to flexion and extension. A highly significant effect of wrist deviation on grip strength was found (p < 0.0001). The effect on pinch strength was not statistically significant. Wrist deviation deformities arise in several clinical situations, such as radial clubhand and malunions of the distal radius. A loss of grip strength was found in radial deviation in this study. This would support 1 of the premises for surgical correction of such deviation by centralization or osteotomy.
对12名正常右利手成年人评估了手腕偏斜对握力和捏力的影响。在短臂石膏固定下保持中立位、最大尺偏（平均41度）和最大桡偏（平均26度）的手腕位置，同时测量握力、钥匙捏力和指尖捏力。手腕位置在屈伸方面为中立位。发现手腕偏斜对握力有高度显著影响（p < 0.0001）。对捏力的影响无统计学意义。手腕偏斜畸形出现在多种临床情况中，如桡侧多指畸形和桡骨远端畸形愈合。本研究发现桡偏时握力下降。这将支持通过中心化或截骨术对此类偏斜进行手术矫正的前提之一。
