The functional anatomy of the distal radioulnar joint was studied in relation to the whole forearm, using three fresh-frozen, above-elbow amputation specimens. The specimens demonstrate how the proximal and distal radioulnar joints together form a bicondylar joint of special character. The proximal "condyle," the radial head, rotates axially, whereas the distal "condyle," the ulnar head, is fix...

BACKGROUND The Kudo total elbow prosthesis (TEP) is a well-established implant with good mid-term results. The ulnar component can be placed with or without cement, and the humeral component is normally placed without cement. METHODS 89 Kudo type-5 total elbow prostheses were evaluated after a mean follow-up of 6 (1.7-11) years. The indication for joint replacement was rheumatoid arthritis in...

Study Design Questionnaire. Objective To evaluate the ability of spine surgeons to distinguish C8-T1 radiculopathies from ulnar neuropathy. Methods Twenty-four self-rated "experienced" cervical spine surgeons completed a questionnaire with the following items. (1) If the ulnar nerve is cut at the elbow, which of the following would be numb: ulnar forearm, small and ring fingers; only the ulnar ...

We report a patient with primary ulnar entrapment neuropathy in the midarm. Stimulation of multiple sites along the ulnar nerve showed a motor conduction block at a distance of 7.5-10 cm proximal to the medial epicondyle, where the nerve was compressed by the medial intermuscular septum. Anatomically, the possibility of ulnar nerve entrapment in this segment has long been suggested, and stimula...

Ulnar-sided wrist pain has often been equated with low back pain because of its insidious onset, vague and chronic nature, intermittent symptoms, and frustration that it induces in patients. Chronic ulnar-sided wrist pain may be accompanied by a history of workers' compensation claims and unrelenting and irresolvable pain, and it may occur in patients with dfficult personalities. Despite these ...

The diagnosis of ulnar nerve entrapment at the elbow has relied primarily on clinical and electrodiagnostic findings. Magnetic resonance imaging (MRI) has been used in the evaluation of peripheral nerve entrapment disorders to document signal and configurational changes in nerves. In this case report we review the MRI and operative findings of a rare constriction band causing ulnar nerve compre...

Abstract Background Ulnar head fractures are increasingly higher with the growing proportion of elderly people. Failure to achieve a stable anatomic reduction ulna fracture may lead distal radioulnar joint (DRUJ) dysfunction and nonunion radius. Due lack postoperative reporting outcomes biomechanical studies, it has not been well established about optimal management comminuted fracture. Hence, ...

The superficial palmar arch (SPA) of the hand is generally formed by the ulnar artery (UA) and superficial palmar branch of the radial artery (RA). Very rarely, however, the SPA is formed by the median artery (MA) and RA. This was termed the median-radial type (MRT) of SPA by Adachi in 1961 in Keen (Am. J. Anat. 108: 245-61). The recent use of the RA as a coronary artery bypass graft in myocard...

Background In the treatment of cubital tunnel syndrome (CuTS), in situ ulnar nerve decompression is commonly used. This study aims to investigate predictive factors for poor recovery and ulnar nerve instability following this procedure. Methods We enrolled 235 patients who underwent in situ ulnar nerve decompression for the treatment of CuTS from January 2010 to December 2014. All patients un...

The majority of distal radius fractures are associated with an ulnar styloid fracture [1-3]. There is solid evidence in the literature that this association may ultimately affect the clinical outcome causing instability, disability, and pain in the distal radioulnar joint (DRUJ) [2,4-7]. The main reasons for the worse outcome are: (1) DRUJ instability, (2) impingement with the triquetrum, and (...