Yingfan Pei; Hyung-Sun Won; Luping Zhang; Dongmei Zhao; Naili Zhang; Qing Xu & Hongfu Liu

Forearm Compartment Syndrome (FCS) is a severe condition that can result in functional loss of the hand. The primary treatment for FCS is fasciotomy, which involves incision of the fascia over the forearm's superficial flexor muscles (PT, FCR, PL, FCU, FDS). This study examined 58 forearm specimens from 40 cadavers to investigate the morphological characteristics and fusion points between these muscles. The superficial flexor groups of the forearm varied in morphology among 58 specimens. Specifically, the lowest fusion points between the muscles were as follows: 9.6±1.3 cm between PT and FCR, 8.1±1.5 cm between FCR and PL, and 6.3±2.6 cm between PL and FCU. For FDS, the fusion points with FCR, PL, and FCU were 10.5±1.6 cm, 7.8±1.9 cm, and 6.9±1.6 cm. Additionally, some specimens exhibited anatomical variations, including absent fusion points, missing muscles, or the presence of accessory muscles. These findings provide valuable anatomical insights that help inform clinical approaches to the treatment of FCS.

KEY WORDS: Forearm Compartment Syndrome; Forearm's superficial flexor muscles; Fasciotomy; Forearm function; The fusion points.

PEI, Y; WON, H-S.; ZHANG, L.; ZHAO, D.; ZHANG, N.; XU, Q. & LIU, H. Morphological variations of the proximal fusions between the superficial flexor muscles of forearm? Its clinical significance. Int. J. Morphol., 43(4):1288-1293, 2025.