Dowdy P A, Richards R S, McFarlane R M
Division of Orthopaedic Surgery, University of Western Ontario, London, Canada.
J Hand Surg Am. 1994 Mar;19(2):199-202. doi: 10.1016/0363-5023(94)90005-1.
The purpose of this study was to determine the frequency with which the palmar cutaneous branch of the median nerve passes through the palmaris longus tendon. Fifty-two wrists (27 cadavers) were dissected. In three wrists the palmaris longus tendon was absent. The palmar cutaneous branch was seen to course through the fibers of the palmaris longus in two specimens (different cadavers). The nerve passed through the tendon 1 and 1.5 cm proximal to its insertion into the palmar aponeurosis. In the presence of this anomaly the palmar cutaneous branch of the median nerve is at risk of injury during harvesting of the palmaris longus tendon for grafts. To avoid injury, we recommend transecting the tendon 2 cm proximal to its insertion into the palmar aponeurosis.
本研究的目的是确定正中神经掌皮支穿过掌长肌腱的频率。解剖了52只手腕（27具尸体）。在三只手腕中没有掌长肌腱。在两个标本（不同尸体）中可见掌皮支穿过掌长肌纤维。该神经在其插入掌腱膜处近端1厘米和1.5厘米处穿过肌腱。在存在这种异常情况时，正中神经掌皮支在取掌长肌腱用于移植时存在受伤风险。为避免损伤，我们建议在掌长肌腱插入掌腱膜处近端2厘米处横断该肌腱。
