Double Crush Ulnar Nerve Palsy with Vascular Compression Causing First Dorsal Interosseous and Adductor Deficit

CASE: We present a case of a 30-year-old man with severe ulnar nerve neuropraxia and first dorsal interosseous muscle wasting. Intraoperatively, a large venous plexus compressing the terminal division of the deep motor branch of the ulnar nerve was identified as a contributing factor. CONCLUSION: This is the first documented instance of compression of the terminal branch of the ulnar nerve caused by a venous plexus, resulting in neurapraxia. This rare anatomical variant caused progressive functional impairment and was successfully treated with ligation of vessels distally along with proximal and distal nerve decompression.