Anatomic Landmarks for the First Dorsal Compartment
Author Information
Author(s): Hazani Ron MD, Nitin J. Cooney MD, Wilhelmi Bradon J. MD
Primary Institution: University of Louisville School of Medicine
Hypothesis
Knowledge of anatomic landmarks for the first dorsal compartment can assist clinicians with management of de Quervain's disease.
Conclusion
The superficial bony prominences of the radial wrist can be used reliably as anatomic landmarks for the first dorsal compartment.
Supporting Evidence
- The average length of the extensor retinaculum was approximately 2.2 cm.
- A separate compartment for the extensor pollicis brevis was noted in 35% of the specimens.
- The abductor pollicis longus tendon demonstrated variability with 1, 2, 3, or 4 slips in 9%, 30%, 43%, or 26% of the specimens.
Takeaway
Doctors can find the first dorsal compartment in the wrist by using certain bony landmarks, which helps them treat wrist pain better.
Methodology
Thirty-two cadaveric wrists were dissected, and measurements were taken from predetermined landmarks to the extensor retinaculum.
Limitations
Anatomical variability may affect the reliability of the landmarks.
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