Tendon Injuries
A 45-year-old woman sustains a laceration over the dorsum of her hand at the level of the MCP joint while cooking. She cannot extend her middle finger at the MCP joint, though the DIP and PIP joints have some extension. The laceration is 80% through the tendon width. Regarding extensor tendon injuries:
Mark each as TRUE or FALSE
Extensor tendon zones (odd over joints, even between): Zone 1 (DIP joint - mallet), Zone 2 (middle p...
Extensor mechanism anatomy includes: extrinsic extensors (EDC, EIP, EDM), intrinsic contributions (l...
Extensor zones are numbered with even numbers over joints; Zone 1 is at the MCP; Zone 5 is at the DI...
Zone 1 (mallet) injury: terminal tendon disruption causes DIP flexion posture; closed injuries treat...
Zone 5-7 repairs require stronger techniques than distal zones due to greater forces; dynamic splint...
Answer the questions to see explanations
Click T (True) or F (False) for each option