1102 Tackling Jersey Finger Using Extraosseous Tunnels – Study of a New Technique

Aim Flexor digitorum profundus (FDP) avulsion or Jersey finger is a common injury in hand trauma. Common methods of surgical repair include Mitek bone anchor or a pull-out technique using tunnels drilled through the bone. We present a novel method of FDP tendon repair using extraosseous tunnels. Method Once the avulsed FDP tendon is retrieved, a double-Kessler or Krakow repair is performed with a 3-0 Prolene suture through the distal FDP tendon. Extraosseous tunnels are created either side of the distal phalanx using 18-gauge needles passing through the nailplate and sterile matrix, avoiding the germinal matrix. Suture ends are then passed through the needles. After removing the needles, the suture is knotted over a Jelonet roll. We reviewed this method in a cohort of 16 paediatric and adult patients with FDP avulsion or division at its insertion. Patients were followed-up for at least 6 weeks. All patients underwent post-operative rehabilitation with hand therapists. Function was measured subjectively and using distal interphalangeal joint (DIPJ) flexion and loss of extension. Results 14 patients regained normal or near-normal function. The remaining two had significant polytrauma and developed complex regional pain syndrome. Mean range of DIPJ flexion was of 49.6° at a mean of 11 weeks’ follow-up, mean loss of extension was 11.6°. Conclusions Our results show good outcomes comparable to those in the literature using existing methods. This method is simple and requires no complex instrumentation while providing reliable FDP fixation.