ortho

• Stenosing flexor tenosynovitis of PIP joints.
• D/t tendon sheath constriction at MCP jt,A1 pulley.
• Cause:DM,RA,local trauma.

• Avulsion injury to terminal phalanx d/t sudden pull at insertion of extensor tendon.
• Swan neck deformity seen. i.e hyperextension at PIP n hyperflexion at DIP.

Oblique intra-articular # of base of 1st metacarpal.

Communited extra-articular(v-y) # of base of 1st metacarpal.

• Inflammation of APL(abductor pollicis longus)+ EPB(extensor pollicis brevis).
• Finkelstein test.
• Kanavel sign.