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‎ 10.32598/JROSJ.10.3.1261.2

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Shariatzadeh H, Najd Mazhar F, Abdolahzadeh B, Ghanbari A, Torab R. Carpal Tunnel Syndrome and Median Nerve Anatomical Variation with FPL Tendon. JROS 2023; 10 (3)
URL: http://jros.iums.ac.ir/article-1-2238-en.html

Carpal Tunnel Syndrome and Median Nerve Anatomical Variation with FPL Tendon

Hooman Shariatzadeh¹

, Farid Najd Mazhar¹

, Bakhtiar Abdolahzadeh¹

, Alireza Ghanbari¹

, Reza Torab

1- Bone and Joint Reconstruction Research Center, Iran University of Medical Sciences, Shafa Orthopedic Hospital, Tehran, Iran.

Abstract: (68 Views)

Carpal tunnel syndrome can arise idiopathically or secondary condition. The primary factor contributing to the development of this disorder is alterations in the median nerve. Two primary categorizations of the median nerve are recognized, referred to as the Lanz and Amadio classifications. The Lanz classification is predominantly employed in surgical literature, and the predominant factor in the development of carpal tunnel syndrome is identified as group 3 (Bifid MN). moreover, branches and connections of the MN exist that do not align with any specific category. In standard anatomical structure the MN divides into six branches beyond the carpal tunnel. But in this study, during CTR surgery, the anatomical variation of the median nerve was observed in relation to the flexor pollicis longus in the carpal tunnel. The median nerve bifurcates in the carpal tunnel and at the simultaneously, the flexor pollicis longus tendon passes through the bifurcated median nerve. The primary factor leading to Carpal Tunnel Syndrome is the variability of the median nerve. Understanding the various types of median nerves that contribute to CTS is crucial in order to reduce potential harm during carpal tunnel release surgery.

Keywords: Carpal tunnel syndrome, Median nerve, median nerve anatomic variation, FPL Tendon

Type of Study: Case Report | Subject: Hand surgery / Elbow
Received: 2024/04/21 | Accepted: 2024/11/30 | Published: 2023/08/7

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