Nakamura T, Yabe Y, Horiuchi Y
Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan.
Hand Surg. 1999 Jul;4(1):67-73. doi: 10.1142/s0218810499000034.
The functional anatomy of the interosseous membrane (IOM) of the forearm was studied in 15 fresh frozen cadavers. The IOM consisted of three components: the tendinous part; the membranous part; and the dorsal oblique accessory cord. The tendinous part was a thick and strong complex of three to ten bundles which run from the proximal one third of the radius to the distal quarter of the ulna. The membranous part was recognised as a soft and thin structure, adjacent proximal and distal to the tendinous part. The dorsal oblique cord was found as a single cord on the dorsal side of the IOM from the proximal quarter of the ulna to the middle region of the radius. This cord was distinct from the oblique cord, which existed on the palmar side of the forearm separated from the IOM. The IOM was flat in the neutral position, while it flexed along the rotation axis in pronation and supination. Since the prominence of the curvature in the IOM was almost in the same direction as the fibres of the tendinous part, the tendinous part demonstrated only bending, similar to partial bending of an elastic board. The bending position was changed with the forearm position and the tightened bundles in the tendinous part were altered during rotation.
在15具新鲜冷冻尸体上研究了前臂骨间膜（IOM）的功能解剖结构。骨间膜由三个部分组成：腱性部分、膜性部分和背侧斜副索。腱性部分是一个由三到十束组成的厚实且强壮的复合体，从桡骨近端三分之一延伸至尺骨远端四分之一。膜性部分被认为是一个柔软且薄的结构，位于腱性部分的近端和远端附近。背侧斜索是在骨间膜背侧发现的一条单独的索，从尺骨近端四分之一延伸至桡骨中部区域。这条索与位于前臂掌侧且与骨间膜分离的斜索不同。骨间膜在中立位时是扁平的，而在旋前和旋后时会沿着旋转轴弯曲。由于骨间膜中曲率的突出方向几乎与腱性部分的纤维方向相同，腱性部分仅表现出弯曲，类似于弹性板的部分弯曲。弯曲位置会随着前臂位置的变化而改变，并且在旋转过程中腱性部分中绷紧的束会发生改变。
