Reidenbach M M, Schmidt H M
Anatomisches Institut der Rheinischen Friedrich-Wilhelms-Universität Bonn, Deutschland.
Ann Anat. 1993 Feb;175(1):11-20.
In the hand the space between the deep flexor tendons and the interosseous fascia is named the midpalmar space, spatium palmare medianum. A fat body, Corpus adiposum palmare profundum, can be found there regularly. Despite the anatomical narrowness in this region, it reaches up into the carpal canal. Also in the deep forearm space there is always a fat body, Corpus adiposum profundum antebrachii, located dorsally to the deep flexor tendons, lying on the palmar fascia of the pronator quadratus muscle. Usually it is not connected to the Corpus adiposum palmare profundum. The regular occurrence of both fat bodies indicates their functional importance. It is to be supposed that they serve as a gliding layer for the deep flexor tendons. Especially the Corpus adiposum palmare profundum may provide an essential protecting function to the dorsally located deep branch of the ulnar nerve and deep palmar arch. In contrast there is a higher risk of mechanical irritation and compression of the deep branches of the ulnar nerve and artery during their more proximal course through the opponens muscle of the little finger ("opponens-canal") and the ulnar marginal septum. Characteristic features of dimensions and location of the Corpus adiposum profundum antebrachii and the Corpus adiposum palmare profundum and of the deep branches of the ulnar nerve and artery are described. The clinical relevance is discussed.
在手部，深屈肌腱与骨间筋膜之间的间隙称为掌中间隙，即掌中间隙。在那里通常可以发现一个脂肪体，即掌深脂肪体。尽管该区域在解剖学上较为狭窄，但它向上延伸至腕管。同样，在前臂深部间隙中，总是有一个位于深屈肌腱背侧、位于旋前方肌掌侧筋膜上的脂肪体，即前臂深脂肪体。通常它与掌深脂肪体不相连。这两个脂肪体的经常出现表明它们具有功能重要性。据推测，它们作为深屈肌腱的滑动层。特别是掌深脂肪体可能对位于背侧的尺神经深支和掌深弓提供重要的保护功能。相比之下，尺神经和动脉的深支在其更靠近近端穿过小指对掌肌（“对掌肌管”）和尺侧缘中隔时，受到机械刺激和压迫的风险更高。描述了前臂深脂肪体和掌深脂肪体以及尺神经和动脉深支的尺寸和位置的特征。并讨论了其临床相关性。
