Schöffl I, Oppelt K, Jüngert J, Schweizer A, Neuhuber W, Schöffl V
Insitute of Anatomy 1, Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, 91054 Erlangen, Germany.
J Biomech. 2009 Sep 18;42(13):2183-7. doi: 10.1016/j.jbiomech.2009.04.049. Epub 2009 Aug 7.
In this study the influence of the grip position (crimp grip vs. slope grip position) on the pulley system of the finger was investigated. For this purpose 21 cadaver finger (11 hands, 10 donors) were fixed into an isokinetic loading device. Nine fingers were loaded in the slope grip position and 12 fingers in the crimp grip position. The forces in the flexor tendons and at the fingertip were recorded. A rupture of the A4 pulley occurred most often in the crimp grip position (50%) but did not occur in the slope grip position, in which alternative events were the most common (67%). The forces in the deep flexor tendon (FDP) (slope grip: 371 N, crimp grip: 348 N) and at the fingertip (slope grip: 105 N, crimp grip: 161 N) were not significantly different between the 2 finger positions, but the forces acting on the pulleys were higher in the crimp grip position (A2 pulley: 287 N, A4 pulley: 226 N) than in the slope grip position (A2 pulley: 121 N, A4 pulley: 103 N). The crimp grip position may be the main cause for A4 pulley ruptures but the slope grip position may be hazardous for other injuries as the forces recorded in the flexor tendons and at the fingertip were comparable at the occurrence of a terminal event.
在本研究中，调查了握持位置（卷曲握持与倾斜握持位置）对手指滑轮系统的影响。为此，将21个尸体手指（11只手，10名捐赠者）固定在等速加载装置中。9个手指处于倾斜握持位置加载，12个手指处于卷曲握持位置加载。记录屈肌腱和指尖处的力。A4滑轮破裂最常发生在卷曲握持位置（50%），但在倾斜握持位置未发生，在倾斜握持位置其他情况最为常见（67%）。两个手指位置之间，指深屈肌腱（FDP）的力（倾斜握持：371 N，卷曲握持：348 N）和指尖处的力（倾斜握持：105 N，卷曲握持：161 N）无显著差异，但作用于滑轮的力在卷曲握持位置（A2滑轮：287 N，A4滑轮：226 N）高于倾斜握持位置（A2滑轮：121 N，A4滑轮：103 N）。卷曲握持位置可能是A4滑轮破裂的主要原因，但倾斜握持位置可能对其他损伤有危害，因为在终末事件发生时，屈肌腱和指尖处记录的力相当。
