ePlasty: Vol. 16
Zone I Flexor Tendon Injuries
Evgenios Evgeniou, MBBS, MRCS,a and Harriet Walker, MBBS, MRCSb

aNorth Bristol NHS Trust, Bristol, United Kingdom, bPlymouth Hospitals NHS Trust, Plymouth, United Kingdom


Correspondence: evgenios@doctors.org.uk
Keywords: hand trauma, flexor tendon injury, closed FDP rupture, zone I, avulsion fracture
Figure 1. Image demonstrating a hyperextended distal interphalangeal joint and a small avulsion fragment (marked) held at the proximal interphalangeal joint.
Figure 2. Image post fixation of the avulsed flexor digitorum profundus tendon with a Mitek bone anchor.

DESCRIPTION

A 25-year-old male student presented with pain and swelling of the right index finger following catching it in another player's T-shirt while playing rugby. On examination, he was unable to flex his distal interphalangeal joint (DIPJ). Plain radiographs revealed an avulsion fracture of the distal phalanx retracted back to the level of proximal interphalangeal joint (PIPJ).

QUESTIONS

1. Describe a classification system for zone I flexor tendon i .......