Unstable Dorsal Fracture-Dislocations of the Proximal Interphalangeal Joint: Volar Plate Fixation with or without Bone Graft

Chris Milner, Deepak Samson, Simon Tan
Journal of Hand Surgery Asian-Pacific Volume 2019, 24 (1): 50-54

BACKGROUND: To evaluate the treatment of severe dorsal fracture dislocation (DFD) injuries of the proximal interphalangeal joint (PIPJ) by open reduction, bone grafting and fixation with mini-hook plates.

METHODS: Fourteen patients with extensive dorsal fracture dislocation of the PIPJ were operatively treated to reconstruct the fractured middle phalanx volar lip using a fabricated hook plate in conjunction with elevation and bone grafting of depressed articular fragments where present.

RESULTS: Restoration of PIPJ articular anatomy and congruence by hook plate fixation permitted full-range mobilization of the joint during fracture healing, with an average arc of motion of 81° and an average loss of extension of 12.9° at a minimum of 6 months follow up. Hook plate treatment of PIPJ fracture dislocation restores articular anatomy and joint congruence at a single sitting and permits post-operative mobilization without the need for extension block splinting.

CONCLUSIONS: Our results demonstrate a good range of motion following treatment, however hardware removal and tenolysis was necessary in 36% of cases.

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