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Anatomical relations in the carpal tunnel: a computed tomographic study.
Journal of Hand Surgery (Edinburgh, Scotland)
|February 1, 1987
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
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.
- 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.