Tendon Injuries
A 28-year-old man presents with a laceration to the volar aspect of his right ring finger at the level of the proximal phalanx, sustained while cutting glass. He cannot flex the DIP joint against resistance and has weak PIP flexion. On examination, there is loss of the resting cascade, and the finger lies in relative extension compared to adjacent fingers. Both FDP and FDS function appear compromised. Regarding flexor tendon injuries:
Mark each as TRUE or FALSE
The flexor tendon zones are: Zone I (distal to FDS insertion, FDP only), Zone II ("no man's land" - ...
FDP function is tested by holding the PIP in extension and asking the patient to flex the DIP; FDS f...
Zone I injuries are the most challenging; FDP is tested with PIP flexed; FDS is not important and do...
Modern repair principles include strong core suture technique (4-6 strand repairs provide tensile st...
Complications include adhesion formation (most common, especially Zone II), rupture (2-5% with moder...
Answer the questions to see explanations
Click T (True) or F (False) for each option