Natsis Konstantinos, Tzika Maria, Paraskevas George K, Karanassos Marinos, Lazaridis Nikolaos
Department of Anatomy and Surgical Anatomy, Aristotle University of Thessaloniki, Thessaloniki, GRC.
Department of Orthopaedics, Aristotle University of Thessaloniki, Thessaloniki, GRC.
Cureus. 2019 Oct 7;11(10):e5859. doi: 10.7759/cureus.5859.
The muscular thenar branch typically arises from the median nerve distal to the transverse carpal ligament and supplies the thenar musculature. In the present cadaveric case, the existence of double muscular thenar branches is described. The two nerves originated from the first common palmar digital nerve and gave off five terminal muscular branches. The proximal nerve supplied the abductor pollicis brevis (two branches) and the opponens pollicis (two branches) muscles, whereas the distal muscular thenar branch presented a loop and innervated the superficial head of flexor pollicis brevis muscle. Variations of the muscular thenar branch in the anatomical and surgical literature are discussed, along with the potential implications during surgical treatment of carpal tunnel syndrome (CTS).
鱼际肌支通常发自腕横韧带远侧的正中神经，支配鱼际肌。在本尸体病例中，描述了双鱼际肌支的存在。这两条神经发自第一掌侧总指神经，发出五条终末肌支。近端神经支配拇短展肌（两支）和拇对掌肌（两支），而远端鱼际肌支呈袢状，支配拇短屈肌浅头。文中讨论了解剖学和外科学文献中鱼际肌支的变异情况，以及在腕管综合征（CTS）手术治疗过程中的潜在影响。
