Triscaphe joint

The triscaphe joint is the shared joint between the scaphoid, trapezium and trapezoid bones in the wrist. This joint is also referred to by its much longer name, the scaphotrapeziotrapezoid (STT) joint.

Related pathology

This joint may be fused as an alternative to scapholunate fusion in treatment for certain wrist instability syndromes, or as a treatment for Kienböck disease. This procedure is called triscaphe arthrodesis . The triscaphe joint is also a commonly affected site in degenerative and inflammatory arthritis .