Tendon Injuries
A 30-year-old man presents after a knife laceration to the dorsum of his hand at the level of the MCP joint. He has loss of finger extension at this joint but intact IP extension. Examination reveals a 70% partial laceration of the extensor tendon. You are planning surgical repair and discussing the extensor tendon zone system and treatment principles with a trainee. Regarding extensor tendon zones and injuries:
Mark each as TRUE or FALSE
The extensor tendon zone system (Kleinert-Verdan) divides the hand and fingers into 8 zones for digi...
Zone I injuries (DIP level) result in mallet finger - loss of active DIP extension with intact passi...
Even zones are over joints; Zone I is at the MCP level; Zone V is at the DIP; mallet finger affects ...
Zone V (MCP level) injuries may still have IP extension from intrinsic muscle function through the l...
Post-operative rehabilitation varies by zone: distal zones (I-III) benefit from static splinting pro...
Answer the questions to see explanations
Click T (True) or F (False) for each option