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KMID : 1143020220270010049
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Archives of Hand and Microsurgery
2022 Volume.27 No. 1 p.49 ~ p.53
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Variation of the palmar cutaneous branch of the median nerve identified within the tendon sheath of the flexor carpal radialis
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Park Ha-Sung
Choi Shin-Woo
Bae Joo-Yul
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Abstract
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Purpose: During volar plate fixation of distal radius fractures, we have encountered patients with an anomalous course of the palmar cutaneous branch (PCB) of the median nerve within the sheath of the flexor carpi radialis (FCR) tendon. The purpose of this study was to assess the frequency and location of variations of the PCB within the sheath of the FCR tendon.
Methods: This retrospective study enrolled 83 patients who underwent volar locking plate fixation through a modified Henry approach for distal radius fractures from July 2018 to April 2020. When we encountered an anomalous PCB within the sheath of the FCR tendon, we documented the specific finding and location where the PCB entered the sheath of the FCR tendon.
Results: Nine patients (10.8%) had an anomalous course of the PCB pene trating the sheath of the FCR tendon. The average entry point of PCB into the sheath of the FCR tendon was 3.07 cm from the distal wrist crease (range, 2.5-3.6 cm).
Conclusion: An anomalous course of the PCB entering the sheath of the FCR tendon was observed at a high frequency (10.8%). Care must be taken not to injure the PCB while dissecting of the FCR sheath using a modified Henry approach for a distal radius fracture.
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KEYWORD
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Median nerve, Anatomic variation, Radius fractures, Fracture fixation
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