肘管与滑车上肘肌的解剖学研究及其临床意义

Abstract

Abstract:

Objective　To explore anatomic features of cubital tunnel, and provide reference for the decompression treatment of the cubital tunnel syndrome.　Methods　14 formalin-fixed adult elbow specimens were used in this study. 11 of them were dissected to reveal anatomic features of the cubital tunnel, other 3 were embedded by celloidin and performed successive horizontal, coronal and sagittal section with the thickness of 1mm, followed by the cubital tunnel reconstruction adopting successive horizontal sectional images.　Results　The floor of cubital tunnel was formed by the capsule of elbow and all the three bundles of medial collateral ligament (MCL). The roof of this tunnel was composed of cubital tunnel retinaculum or epitrochleo-anconeus (EA) and the fascia between the two heads of flexor carpi ulnaris muscle. Epitrochleo-anconeus originated from the medial epicondyle. The upper portion of this muscle inserted to the medial margin of the olecranon through a fascia while the lower 2/3 portion directly to it. A fascial pedicle was identified at the level of the retrocondylar groove. It connected the ulnar nerve to the posterolateral portion of the floor.　Conclusions　Reasonable excision of EA is efficiently for the ulnar nerve suffered compression by epitrochleo-anconeus. The fascial pedicle has the function to prevent the ulnar nerve from subluxation.

Key words: Cubital tunnel, Ulnar nerve, Epitrochleo-anconeus, Celloidin

CLC Number:

R323.71

JIA Ke-Feng, DING 　Shi, ZHAI Li-Dong, YUAN 　Wu, LIU Geng-Chen, LI Yun-Sheng. The anatomy and clinical significance of the cubital tunnel and epitrochleo-anconeus[J]. Chinese Journal Of Clinical Anatomy, 2011, 29(2): 140-144.

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The anatomy and clinical significance of the cubital tunnel and epitrochleo-anconeus

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