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Related Experiment Videos

The Martin-Gruber innervated hand.

J W Brandsma, J A Birke, D S Sims

    The Journal of Hand Surgery
    |July 1, 1986
    PubMed
    Summary

    Martin-Gruber anastomoses preserved hand function in leprosy patients with severe ulnar and median nerve damage. Nerve conduction studies confirmed these connections, explaining the unexpected muscle function.

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    Leprosy review·2007
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    Re-enablement of the neurologically impaired hand--2: surgical correction. report of a surgical workshop held at Green Pastures Hospital and Rehabilitation Centre, November 2004, Pokhara, Nepal.

    Leprosy review·2007

    Area of Science:

    • Neurology
    • Clinical Neuroscience
    • Peripheral Nerve Disorders

    Background:

    • Leprosy neuropathy commonly causes significant damage to the ulnar and median nerves.
    • This nerve damage typically leads to muscle paralysis and characteristic deformities like finger clawing.

    Observation:

    • Two patients with complete ulnar nerve lesions at the elbow and median nerve lesions at the wrist due to leprosy presented with preserved function.
    • Specifically, the first dorsal interosseous and flexor pollicis brevis muscles remained functional.
    • One patient did not exhibit the typical finger clawing deformity.

    Findings:

    • The preserved muscle function and absence of clawing were attributed to the presence of Martin-Gruber anastomoses.
    • Nerve-conduction studies confirmed the functional significance of these anomalous nerve connections.

    Implications:

    • Martin-Gruber anastomoses can functionally compensate for severe peripheral nerve lesions in leprosy.
    • Understanding these anastomoses is crucial for accurate diagnosis and prognosis in leprosy neuropathy.
    • This highlights the importance of considering nerve variations in clinical assessments.

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