Current concepts review of extensor tendon injuries of the hand and wrist, covering zone-by-zone anatomy, diagnosis using the 9-zone classification, treatment algorithms (splinting vs. surgery), suture technique selection, and postoperative rehabilitation — with a focus on evidence from studies published through 2010.
When evaluating any dorsal hand wound or closed finger injury, systematically localize it to an extensor zone — odd zones over joints, even zones over bones — because zone determines splinting position, duration, and surgical threshold.
A missed central slip injury (Zone III) with only subtle PIP lag today becomes a fixed boutonniere deformity in weeks if not splinted in full PIP extension.
Current concepts review of extensor tendon injuries of the hand and wrist, covering zone-by-zone anatomy, diagnosis using the 9-zone classification, treatment algorithms (splinting vs. surgery), suture technique selection, and postoperative rehabilitation — with a focus on evidence from studies published through 2010.
When evaluating any dorsal hand wound or closed finger injury, systematically localize it to an extensor zone — odd zones over joints, even zones over bones — because zone determines splinting position, duration, and surgical threshold.
A missed central slip injury (Zone III) with only subtle PIP lag today becomes a fixed boutonniere deformity in weeks if not splinted in full PIP extension.