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Updated: Sep 25, 2026

Human Vastus Lateralis Skeletal Muscle Biopsy Using the Weil-Blakesley Conchotome
Published on: March 4, 2016
Diagnostic biopsy of the motor nerve to the gracilis muscle. Technical note
M K Abouzahr1, D J Lange, N Latov
1Department of Surgery, Columbia University College of Physicians and Surgeons, New York, New York, USA.
Abstract:
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.
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