Endoscopic Anterior Subcutaneous Transposition of the Ulnar Nerve.

Cubital tunnel syndrome refers to ulnar nerve compressive neuropathy and most commonly occurs at the level of the elbow. Surgical options include in situ decompression, decompression with anterior transposition of the ulnar nerve, and medial epicondylectomy with or without decompression. With the advancement of endoscopic surgery, techniques of endoscopic in situ decompression of the ulnar nerve, endoscopy-assisted anterior transposition, and endoscopic anterior transposition of the ulnar nerve have been reported with the advantage of minimally invasive surgery. We describe a 2-portal technique of endoscopy-assisted anterior subcutaneous transposition of the ulnar nerve.