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Anatomical relations in the carpal tunnel: a computed tomographic study.

W Jessurun, B Hillen, F Zonneveld

    Journal of Hand Surgery (Edinburgh, Scotland)
    |February 1, 1987
    PubMed
    Summary

    Computed tomography revealed no median nerve compression in the carpal tunnel during wrist flexion or extension for either patients or controls. The carpal tunnel

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    Area of Science:

    • Orthopedics
    • Radiology
    • Anatomy

    Background:

    • Carpal tunnel syndrome is a common condition.
    • Understanding median nerve behavior in the carpal tunnel is crucial.

    Purpose of the Study:

    • To investigate median nerve compression in the carpal tunnel during wrist movement.
    • To compare carpal tunnel dimensions between patients and controls.

    Main Methods:

    • Computed tomography (CT) scans of the wrist were obtained.
    • Scans were performed on patients and controls in neutral, flexed, and extended positions.

    Main Results:

    • No median nerve compression was observed between the flexor tendons and flexor retinaculum.
    • In flexion, the median nerve typically shifted dorsally, away from the flexor retinaculum.

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  • No significant difference in carpal tunnel cross-sectional area was found between patients and controls.

    • Conclusions:

    • Wrist position (flexion/extension) does not appear to cause direct median nerve compression within the carpal tunnel.
    • Carpal tunnel dimensions are similar in patients and controls, suggesting other factors may contribute to carpal tunnel syndrome.