目的:前臂旋转过程中骨间膜(IOM)的长度变化尚未得到充分研究。探讨远端斜带(DOB)长度变化的意义,远端附件带(DAB),和近端,中间,和中心带的远端部分(CBP,CBM,和CBD,分别),我们调查了最大内旋时这些韧带的长度变化,45°内旋,中立位置,45°旋光,和体内最大的旋光。
方法:通过在上述5个旋转位置进行计算机断层扫描,获得了6名健康志愿者的右前臂图像。我们创建了桡骨和尺骨的三维模型,DOB,DAB,和基于原点和插入点的中心带。最后,每条韧带的长度是根据3维模型上记录的插入点和起点估算的.
结果:DAB和CBD的长度从最大内旋到45°内旋显着增加。DOB长度从内旋45°到中立位置显着增加,从旋后45°到最大旋后显着减少。DAB和CBM的长度从中立位置到45°的旋后显着增加。从旋起45°到最大旋起,DAB长度显着降低。对于CBP来说,在前臂旋转期间没有观察到长度差异。
结论:DOB在中立位置变得拉紧,和中央乐队,尤其是CBP,几乎是等距的。研究结果表明,DOB可以提供远端尺桡骨关节的主要稳定,而中央带是前臂旋转过程中的关键稳定器。
结论:当患者发生远端尺尺关节损伤时,外科医生可能会注意DOB,CBP可能是IOM重建的最佳位置。
OBJECTIVE: The length change of the interosseous membrane (IOM) during forearm rotation has not been fully studied. To explore the meaning of length change in the distal oblique band (DOB), the distal accessory band (DAB), and the proximal, middle, and distal parts of the central band (CBP, CBM, and CBD, respectively), we investigated the length change in these ligaments at maximum
pronation, 45° of
pronation, neutral position, 45° of supination, and maximum supination in vivo.
METHODS: The images of the right forearms from 6 healthy volunteers were obtained by computed tomography scanning at the 5 above-mentioned rotation positions. We created 3-dimensional models of the radius and ulna, DOB, DAB, and central band based on the points of origin and insertion. Finally, the length of each ligament was estimated from the points of insertions and origins registered on the 3-dimensional models.
RESULTS: The DAB and CBD lengths increased significantly from maximum
pronation to 45° of
pronation. The DOB length increased significantly from 45° of
pronation to neutral position and decreased significantly from 45° of supination to maximum supination. The DAB and CBM lengths increased significantly from neutral position to 45° of supination. The DAB length decreased significantly from 45° of supination to maximum supination. For the CBP, no difference in length was observed during forearm rotation.
CONCLUSIONS: The DOB becomes taut at neutral position, and the central band, especially the CBP, is nearly isometric. The findings indicate that the DOB may provide the primary stabilization of the distal radioulnar joint and that the central band is the key stabilizer during forearm rotation.
CONCLUSIONS: Surgeons may pay attention to the DOB when a patient incurs a distal radioulnar joint injury, and the CBP may be the optimal location for IOM reconstruction.