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Hand & Upper Limb
intermediate
X-Type

Midcarpal Arthritis - SLAC Wrist Stage 3 and Four-Corner Fusion

Wrist Arthritis

A 58-year-old right-hand-dominant carpenter presents with progressive wrist pain and weakness over 3 years. He has a history of scapholunate ligament injury 15 years ago that was treated non-operatively. Examination reveals dorsal wrist tenderness, reduced range of motion, and pain with grip. Radiographs show arthritic changes at the radioscaphoid joint, scaphocapitate joint, and now extending to the capitolunate articulation. Regarding SLAC wrist and midcarpal arthritis:

Mark each as TRUE or FALSE

A

SLAC (Scapholunate Advanced Collapse) wrist follows a predictable pattern of arthritic progression: ...

B

The pathophysiology of SLAC progression: SL ligament disruption causes scaphoid flexion and DISI pat...

C

SLAC wrist begins with arthritis at the radiolunate joint because the lunate is the central carpal b...

D

Watson classification of SLAC stages guides treatment: Stage I (radial styloid-scaphoid) may be mana...

E

Scaphoid excision and four-corner fusion (SLFC): indicated for Stage II and III SLAC; preserves radi...

Answer the questions to see explanations

Click T (True) or F (False) for each option