Abstract
Objective To simulate endoscopic decompression and anterior transposition of the ulnar nerve for treatment of cubital tunnel syndrome in cadavers and explore the technical details of this approach.Methods Simulation of endoscopic decompression of the cubital tunnel and anterior transposition of the ulnar nerve was carried out in 8 upper limb cadaver specimens.The cubital tunnel was then opened to explore the effectiveness of decompression and transposition and any signs of medial antebrachial cutaneous nerve (MACN) damage.Results Nerve decompression was sufficient with all the constrictions released.The ulnar nerve was properly anterior transposed and secured.There was no sign of secondary compression to the ulnar nerve.There was no MACN injury during cubital tunnel release and ulnar nerve decompression.MACN posterior branch was caught in 2 specimens when the superficial fascia and pronator teres sarcolemma were sutured together to make transposition tunnel.Creating a fascia tunnel did not cause MACN injury.Conclusion Endoscopic release can effectively remove the compression structures,anterior transpose the ulnar nerve and avoid MACN injury.Care should be taken not to sew the superficial fascia to the pronator teres sarcolemma.The fascia sling is a safe way to secure the transposed nerve. Key words: Cubital tunnel syndrome; Endoscopy; Subcutaneous anterior transposition; Medial antebrachial cutaneous nerve
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