[Ulnar nerve lesions at the elbow--clinical aspects and surgical treatment using medial subperiosteal epicondylectomy].

Ulnar neuropathy is a well recognized clinical entity caused by a variety of pathological lesions around the elbow and the sulcus olecrani. Numbness and paraesthesia in the little finger and medial half of the fourth digit are the most common complaints. Weakness of the small muscles of the hand innervated by the ulnar nerve, and a positive Tinel's sign are other features. Generally the diagnosis is confirmed by an electro-physiological study. We have described the technique of epicondylectomy and discussed the reasons why we believe it to be preferable to anterior transposition.