Scaphotrapeziotrapezoid osteoarthritis

Isolated STT arthritis is less common than SLAC patterns of arthritis 43,44 , and the etiology of STT arthritis is not as well understood. In Watson and Ballet's paper 1 , SLAC wrist accounted for 57 of arthritic wrists, whereas 27 of cases occurred between the scaphoid, trapezium, and trapezoid a combination of these two patterns occurred in 15 1 . Previous studies have associated STT arthritis with isolated sca-pholunate ligament disruption 35 . Cope 45 demonstrated in a cadaveric study that...