Safe carpal tunnel release with a palmar incision.
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Carpal Tunnel Syndrome↗
Biomedical subjects
M K Abouzahr
Publications and source records attributed to M K Abouzahr.
Acute dislocation of the trapeziometacarpal joint in a child.
An acute dorsal dislocation of the trapeziometacarpal joint in a child is presented. The mechanisms of injury and controversies of treatment are discussed. The achievement of a stable reduction acutely is emphasized. After healing, joint stability is confirmed by obtaining stress radiographs to identify whether joint subluxation is present before degenerative changes occur.
Bicycling↗
Motor nerve biopsy studies in motor neuropathy and motor neuron disease.
The clinical presentation of motor neuropathy often resembles that of motor neuron disease, sometimes leading to an erroneous diagnosis. Moreover, the underlying pathological process in motor neuropathy has been rarely investigated and there are no systematic studies of the affected motor nerves. We describe a new motor nerve biopsy procedure, performed in 15 patients: 6 with motor neuropathy and 9 with motor neuron disease. The motor branch from the anterior division of the obturator nerve to the gracilis muscle in the thigh was biopsied. In both groups of patients the motor nerves exhibited depletion of myelinated nerve fibers. In motor neuropathy there was a significantly higher density of regenerative clusters of small myelinated fibers in comparison to motor nerves from patients with motor neuron disease. In addition, in 3 patients with motor neuropathy there was evidence for demyelination with thinly myelinated axons and small onion bulb formations. These pathological studies of motor nerve biopsies can help to differentiate motor neuropathy from motor neuron disease.
Adult↗
Aneurysms of the digital arteries: a case report and literature review.
Aneurysms of the digital vessels are rare. An aneurysm of the radial digital artery of the index finger in a child is reported to illustrate the clinical presentation and value of magnetic resonance arteriography in diagnosis. Literature review reveals that only 18 cases have been reported. These cases are analyzed in terms of digit involvement, vessel affected, mechanism of injury, and treatment.
Aneurysm, False↗
Irreducible dorsal dislocation of the distal interphalangeal joint: case report and literature review.
An irreducible dorsal dislocation of the DIP joint is a rare injury. Irreducibility is primarily caused, in closed injuries, by the interposed volar plate, and in open injuries by the dislocated FDP tendon. It is important to recognize the complex nature of this dislocation and to limit attempts at closed reduction. Early surgical exploration, anatomic reduction, and early mobilization are prerequisites to good functional recovery.
Adolescent↗
Diagnostic biopsy of the motor nerve to the gracilis muscle. Technical note.
A biopsy specimen of the motor nerve to the gracilis muscle was obtained in 151 patients to aid in the diagnosis of neuromuscular disorders. The procedure is simple, safe, and has low morbidity and complication rates. The surgical technique is described. Indications for the use of this technique are motor neuropathy, motor neuron disease, Guillain-Barre syndrome, and mixed neuropathy with prominent motor symptoms.
Adult↗
Prevention of splashing during high-pressure irrigation of contaminated wounds.
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Bandages↗
Carpal tunnel release using limited direct vision.
A novel method to release the carpal tunnel is presented. It combines the advantages of endoscopic and open techniques while utilizing standard instruments. A lighted Killian nasal speculum is introduced between the palmar fascia and the transverse carpal ligament. The ligament is incised under direct vision. The procedure was performed in 28 cadaver hands and followed by inspection utilizing the open method through an interthenar incision. The transverse carpal ligament was completely divided in all hands without nerve or tendon injury. The superficial palmar arch was injured in one hand (3.6 percent). The advantages, disadvantages, pitfalls, and results are discussed. The technique is simple and effective, employs inexpensive instruments, and has a low complication rate.
Cadaver↗
The posterior intermuscular approach to the vessels of the leg.
The posterior intermuscular approach emphasizes preservation of the soleus muscle by an intermuscular surgical approach to the vessels of the leg. The dissection proceeds from a normal zone proximally toward the zone of injury and facilitates selection of the site of microanastomosis. The neurovascular supply of the soleus is guarded, and its numerous venous channels are avoided. The indications and surgical planning are discussed. Two illustrative cases are presented.
Adult↗
Retrieval of the retracted flexor tendon.
A simple and easy technique to retrieve the retracted flexor tendon across the sheath is described. Skill and atraumatic handling of the tendon are emphasized by employing the same suture to accomplish tendon delivery and repair.
Catheterization↗