Tendon Injuries
A 28-year-old right-hand dominant man presents after punching a wall. He has pain and swelling over the dorsum of the right hand at the MCP joint of the middle finger. With active extension, the extensor tendon subluxates ulnarly off the metacarpal head. He cannot actively extend the MCP joint from a flexed position but can maintain extension once positioned. Regarding sagittal band rupture:
Mark each as TRUE or FALSE
The sagittal bands are components of the extensor hood that stabilize the extensor tendon over the m...
The classic mechanism is a forceful punch ("boxer's knuckle") causing closed rupture of the radial s...
The sagittal bands prevent tendon subluxation dorsally; rupture occurs at the ulnar band primarily; ...
Clinical examination reveals inability to actively extend the MCP joint from a flexed position (exte...
Treatment depends on chronicity and severity: acute partial injuries (Rayan I/II) may be treated wit...
Answer the questions to see explanations
Click T (True) or F (False) for each option