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Scaphotrapezial joint arthroscopy: a palmar portal
Jonathan Baré1, Alastair J Graham, Stephen K Y Tham
1Department of Orthopaedic Surgery, Dandenong Hospital, Dandenong, Victoria, Australia.
The Journal of Hand Surgery
|July 25, 2003
Summary
A new palmar portal approach for scaphotrapezial trapezoid (STT) joint arthroscopy offers improved visualization and safety. This technique provides better access to the STT joint compared to traditional dorsal portals.
Area of Science:
- Orthopedic Surgery
- Arthroscopy
- Wrist Anatomy
Background:
- Traditional dorsal radial midcarpal portals for scaphotrapezial trapezoid (STT) joint arthroscopy present challenges.
- These portals offer limited visualization of the dorsal rim and pose risks due to proximity to neurovascular structures.
Purpose of the Study:
- To evaluate the safety, accessibility, and visualization capabilities of a palmar portal for STT joint arthroscopy.
- To establish a novel arthroscopic approach for the STT joint through the palm.
Main Methods:
- Cadaveric wrist dissections were performed to identify anatomical landmarks for a safe palmar portal.
- The efficacy of the established palmar portal was confirmed in subsequent cadaveric wrist dissections.
Main Results:
- A safe palmar portal to the STT joint can be created.
- Precise anatomical landmarks for portal creation include the abductor pollicis longus tendon and scaphoid tubercle.
Conclusions:
- The palmar arthroscopic portal to the STT joint is easily identifiable using surface landmarks.
- This approach enhances visualization of the articular surface and offers a safe alternative for therapeutic interventions.