Interest of Bone Scintigraphy in the Search for Scaphotrapezoidal Osteoarthritis

Interest of Bone Scintigraphy in the Search for Scaphotrapezoidal Osteoarthritis in the Context of Preoperative Assessment of Rhizarthrosi

Rhizarthosis can be treated by prothesis of the carpo-metacarpal (CM) joint of the thumb. But, if the scaphotrapeziotrapezoid (STT) joint is also affected by arthrosis, treating the CM joint exclusively may result in partial pain relief. Thus, bone scintigraphy could identify early arthrosis of the STT joint when its appearance seems to be normal on planar radiography, suggesting another surgical procedure.

Inclusion Criteria:

• failure of medical treatment of rhizarthrosis
• eligibility for prothesis
• no osteoarthritis of the STT joint on planar radiography
• no opposition from the patient

Exclusion Criteria:

• Refusal by a patient