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Madison Army Medical Center Referral Guidelines. Carpal and Cubital Tunnel (Neuropathic Entrapment) Syndromes Pain, loss of strength or sensory changes (paresthesias) in the distribution of the median or ulnar nerves not associated with neck pain.

Feindel and Stratford (1958) were the first to use the term cubital tunnel. They emphasized that the ulnar nerve is compressed at the elbow because of anatomic peculiarities to that region. In 1898, Curtis performed the first published case of management for ulnar nerve neuropathy at the elbow, which consisted of a subcutaneous anterior transposition.
Affected patients often experience numbness and tingling along the little finger and the ulnar half of the ring finger. This discomfort is often accompanied by weakness of grip and, rarely, by intrinsic wasting.
Synonyms and related keywords: compressed ulnar nerve, ulnar nerve compression, ulnar nerve neuropathy at the elbow, numb finger, compressive neuropathy
Verheyden & Palmer 2007

Neural traction may be an important cause of cubital tunnel syndrome, according to researchers at the Washington University School of Medicine in St. Louis. To study the etiology of cubital tunnel syndrome (compression of the ulnar nerve at the elbow), 23 upper extremity cadaveric specimens were studied using a combination of magnetic resonance imaging (MRI), dynamic three dimensional MRI reconstruction, and intraneural and extraneural pressure measurements in varying degrees of elbow flexion.
Randall V. Ehrlich, MD 1998

Diabetic mononeuropathies may be non-compressive (cranial nerve lesions, thoraco-abdominal radiculopathy) or compressive giving rise to nerve entrapment syndromes.[1] Compression mononeuropathies are related to mechanical disruption of the myelin sheaths at sites of external compression. Carpal tunnel syndrome affecting the median nerve is the most common but ulnar and lateral popliteal nerves are also commonly involved.[2] A case is described of ulnar neuropathy and a brief synopsis of the present understanding of diabetic mononeuropathy is given.
Posted 08/29/2005 Deborah J. Wake; Rohana J. Wright; Sarah C. Love; Ian W. Campbell Br J Diabetes Vasc Dis. 2005;5(3):171-172.

Because of the anatomic positioning of the ulnar nerve, it is subject to entrapment and injury by a wide variety of causes. It is the second most common entrapment neuropathy in the upper extremity (the first being the median nerve and its branches). Because of its superficial position at the elbow, it is often injured by excessive pressure in this area (leaning on the elbow during work or while driving a car). This article discusses the most common type of entrapments of the ulnar nerve, which occur most frequently at the elbow and wrist.
Synonyms and related keywords: cubital tunnel syndrome, ulnar tunnel syndrome, Guyon canal entrapment, decompression in situ, decompression with anterior transposition
Stern & Steinmann 2004