Cases reported "Ulnar Neuropathies"

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1/35. Proximal Martin-Gruber anastomosis mimicking ulnar neuropathy at the elbow.

    We present a case of Martin-Gruber anastomosis (MGA) mimicking conduction block between the above- and below-elbow sites of ulnar nerve stimulation. We review the anatomical and electrophysiological literature on this subject and discuss its clinical implications. The potential for a MGA to occur very proximally in the forearm and thus mimic ulnar neuropathy at the elbow is underrecognized. We recommend that a check for MGA be performed on all patients with an apparent conduction block at the elbow, and suggest that 3 cm distal to the medial epicondyle may be an optimal below-elbow ulnar nerve stimulation site.
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ranking = 1
keywords = nerve, block
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2/35. Bowler's thumb treated by translocation of the digital nerve.

    A case of neuroma of the ulnar digital nerve of the thumb in a bowler was treated successfully by translocation of the nerve beneath the adductor pollicis.
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ranking = 2.9653805427117
keywords = nerve
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3/35. ulnar nerve lesion due to cutaneous anthrax.

    anthrax is an acute infectious disease caused by the spore-forming bacterium bacillus anthracis. anthrax is most common in agricultural regions, where it occurs in animals. It can also infect humans. Cutaneous anthrax infections occur when the bacterium enters a cut or abrasion on the skin. A case of cutaneous anthrax infection of the arm is presented. The patient needed to undergo a skin graft. He subsequently developed an ulnar nerve lesion after severe edema in his arm and hand.
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ranking = 2.4711504522597
keywords = nerve
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4/35. Ulnar neuropathy as a complication of macular hole surgery.

    OBJECTIVE: To report a series of patients manifesting ulnar neuropathy as an extraocular complication following macular hole surgery and facedown positioning. methods: Retrospective chart review of 7 patients identified by the operating surgeon as developing ulnar neuropathy during the immediate postoperative period after undergoing vitrectomy surgery with fluid-gas exchange for macular hole followed by at least 1 week of strict facedown positioning. RESULTS: All 7 patients developed symptoms of ulnar neuropathy, including paresthesias, dysesthesias, pain, weakness, and muscle atrophy. Signs included abnormal electromyogram, prolonged nerve conduction velocities, and impaired neurologic clinical test results in patients examined. Symptoms did not resolve with cessation of facedown positioning, and with follow-up ranging from 3 to 24 months all patients had persistent symptoms. All patients had positioned themselves with their arms continuously flexed. Three of 7 patients had placed pressure directly on their bent elbows. CONCLUSIONS: Ulnar neuropathy is an extraocular complication of macular hole surgery that can be attributed to arm position during postoperative facedown positioning. Surgeons performing macular hole surgery should caution their patients to minimize the amount of time spent with their elbows in a flexed position. Particular effort should be made to minimize pressure on the bent elbow.
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ranking = 0.49423009045194
keywords = nerve
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5/35. Motor neuron presentation of an ulnar neuropathy and Riche-Cannieu anastomosis.

    A Riche (7)-Cannieu (2) anastomosis (ulnar-to-median anastomosis in the hand) in the setting of an ulnar or median nerve lesion can produce confusing clinical and electrodiagnostic findings. We report a patient with a deep branch ulnar neuropathy complicated by a Riche-Cannieu anastomosis. His clinical presentation led to an initial diagnosis of motor neuron disease. Extensive electrophysiologic studies clarified the extent of the Riche-Cannieu anastomosis and the ulnar neuropathy.
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ranking = 0.49423009045194
keywords = nerve
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6/35. MRI in unexplained mononeuropathy.

    Four young patients with severe unexplained progressive mononeuropathy are described. None had a history of known trauma to the affected limb. In addition to the standard neurologic examination and electrophysiologic studies (nerve conduction studies and electromyography), all underwent neuroimaging of the involved extremity. In three patients, magnetic resonance imaging revealed intrinsic abnormalities of the appropriate nerve. The pattern or absence of magnetic resonance imaging changes directly influenced decisions about surgical exploration of the nerve in all four patients. With the advent of more sophisticated technology, magnetic resonance neurography has become a potent diagnostic tool in the evaluation of disorders of peripheral nerve and muscle.
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ranking = 1.9769203618078
keywords = nerve
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7/35. Ulnar neuropathy at the elbow due to unusual sleep position.

    Abnormal strain of the ulnar nerve over the sulcus due to an unusual sleep position is a rare cause of ulnar neuropathy at the elbow. A 57-year-old patient with Mandelung's deformity developed progressive weakness in the flexion of fingers 4 and 5 and in finger straddling on the left side. Additionally, there was slight wasting of the left hypothenar and the left interossei muscles. Motor and sensory nerve conduction studies of the left ulnar nerve showed delayed conduction velocities over the left ulnar sulcus. He preferred to sleep in a left lateral position with his head lying on a headrest roll, his left forearm being flexed at 110 degrees and his hand lying either under his cheek or placed on the roll. Only three weeks after the patient had been advised to change his sleep position and to sleep without the headrest roll, weakness markedly improved. This case shows that sleeping in a lateral position with the head on a headrest roll and the hand placed on the roll or under the cheek may cause ulnar neuropathy at the elbow. Change of such a habitual sleep position promptly resolves the symptoms.
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ranking = 1.4826902713558
keywords = nerve
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8/35. Iatrogenic ulnar nerve injury after percutaneous cross-pinning of supracondylar fracture in a child.

    Supracondylar fracture of the humerus is the most common fracture of the elbow in children and has been treated by a variety of methods. Recently, stabilization of reduced fractures with percutaneous pin fixation has become the accepted method of treatment. ulnar nerve injury is a complication of percutaneous pinning of supracondylar fractures, although many authors have reported that it resolves spontaneously after removal of the pin.
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ranking = 2.4711504522597
keywords = nerve
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9/35. Extensor digiti minimi tendon "rerouting" transfer in permanent abduction of the little finger.

    Permanent abduction of the little finger is a bothersome deformity which usually occurs in the context of sequelae of ulnar nerve palsy (Wartenberg's sign), but also in rheumatoid arthritis. The authors report an original technique for correction of this deformity. The extensor digiti minimi tendon is sectioned at its distal insertion and transferred in the wrist through the extensor retinaculum. The "rerouted" tendon is finally resutured distally on the radial aspect of the interosseous muscle. Side-to-side suture of the transferred tendon to the extensor digitorum tendon of the little finger further reinforces the solidity of the procedure. The distal insertion of the extensor digiti minimi tendon is consequently radialized. Its new direction eliminates the abduction component, and the tendon then behaves as an active adductor of the little finger. Five cases (2 cases of ulnar nerve palsy, 3 cases of rheumatoid arthritis) are reported with a mean follow-up of 19 months. All patients have complete active adduction of the little finger in extension, with a persistent capacity for abduction. The other correction techniques published in the literature are discussed.
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ranking = 0.98846018090389
keywords = nerve
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10/35. Fracture of the distal part of the radius associated with severed ulnar nerve.

    We report a case of a severed ulnar nerve after fracture of the distal part of the radius. The most likely hypothesis is stretching of the ulnar nerve fixed by Guyon's canal and severed on the sharp edge of the proximal radius. Although very rare, this lesion must be investigated particularly in cases with marked displacement, especially ulnar and/or volar.
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ranking = 2.9653805427117
keywords = nerve
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