Hama Shunpei, Moriya Koji, Tsubokawa Naoto, Maki Yutaka, Nakamura Hiroaki
Niigata Hand Surgery Foundation, Niigata, Japan.
Department of Orthopaedic Surgery, Yodogawa Christian Hospital, Osaka, Japan.
Nagoya J Med Sci. 2024 Aug;86(3):531-535. doi: 10.18999/nagjms.86.3.531.
We encountered the aberrant muscle called transverse carpal muscle (TCM) anterior to the transverse carpal ligament (TCL) during endoscopic carpal tunnel release (ECTR) for a 56-year-old female with left carpal tunnel syndrome (CTS). Our ECTR technique started with making the distal portal and the anomalous muscle emerged in the portal. We changed ECTR to open carpal tunnel release to clarify the anatomy around TCL to avoid iatrogenic tendon and neurovascular injuries. The TCM does not necessarily exist bilaterally, and our case has also it unilaterally, because the TCM was not observed during the ECTR on the opposite side. Distal incision first ECTR technique enabled us to find the TCM which we could not encounter if conventional ECTR was performed.
在为一名患有左腕管综合征（CTS）的56岁女性进行内镜下腕管松解术（ECTR）时，我们在腕横韧带（TCL）前方遇到了一块异常肌肉，即腕横肌（TCM）。我们的ECTR技术始于制作远端切口，这块异常肌肉出现在切口中。我们将ECTR改为开放性腕管松解术，以明确TCL周围的解剖结构，避免医源性肌腱和神经血管损伤。TCM不一定双侧存在，我们的病例就是单侧存在，因为在对侧进行ECTR时未观察到TCM。远端切口优先的ECTR技术使我们能够发现如果采用传统ECTR则无法遇到的TCM。
