Stern E B, Ytterberg S R, Krug H E, Mullin G T, Mahowald M L
Arthritis Care Res. 1996 Feb;9(1):42-50. doi: 10.1002/art.1790090109.
To investigate the immediate and short-term effects of 3 commercial wrist orthoses on grip strength and function.
Thirty-six patients with definite rheumatoid arthritis participated in the randomized, controlled, cross-over design study of 3 commercial wrist extensor orthoses. Dominant-hand dynamometric grip strength was assessed at both initial and followup sessions while splinted and nonsplinted. Functional impact was assessed using a written questionnaire.
All 3 commercial orthoses reduced grip strength when first donned. After a 1-week adjustment period, one orthosis, the Smith and Nephew Roylan D-Ring (Roylan), afforded splinted grip strength equal to that of the nonsplinted grip strength. The other 2 orthoses continued to reduce grip strength, and afforded splinted grip strength significantly below that of the Roylan. The Roylan was deemed comfortable by more subjects than the other orthoses.
The belief that commercial orthotic use increases grip strength, either immediately or after 1 week, is not supported by this study's data. Different styles of commercial wrist orthoses appear to have differing influence on splinted grip strength.
研究3种市售腕关节矫形器对握力和功能的即时及短期影响。
36例确诊为类风湿关节炎的患者参与了3种市售腕伸肌矫形器的随机对照交叉设计研究。在初始和随访阶段，分别对佩戴矫形器和未佩戴矫形器时的优势手进行测力计握力评估。使用书面问卷评估功能影响。
所有3种市售矫形器初次佩戴时均会降低握力。经过1周的调整期后，一种矫形器，即施乐辉Roylan D型环（Roylan），其佩戴时的握力与未佩戴时相当。另外两种矫形器继续降低握力，且佩戴时的握力显著低于Roylan。与其他矫形器相比，更多受试者认为Roylan佩戴起来更舒适。
本研究数据不支持使用市售矫形器能即时或在1周后增加握力这一观点。不同款式的市售腕关节矫形器对佩戴时的握力似乎有不同影响。
