Elsevier

The Journal of Hand Surgery

Volume 31, Issue 8, October 2006, Pages 1349-1354
The Journal of Hand Surgery

Interphalangeal joint trauma
Mini-Screw Fixation for the Treatment of Proximal Interphalangeal Joint Dorsal Fracture–Dislocations

https://doi.org/10.1016/j.jhsa.2006.07.011Get rights and content

Purpose

Surgical intervention may be necessary to treat unstable dorsal fracture–dislocations of the proximal interphalangeal (PIP) joint of the hand. One method of stabilization is open reduction and internal fixation (ORIF). The purpose of this study was to assess the outcomes of ORIF for unstable dorsal fracture–dislocations of the PIP joint using mini-screws via a volar approach.

Methods

A retrospective chart review with clinical follow-up evaluation was performed on 9 patients who had ORIF for unstable dorsal fracture–dislocations of the PIP joint. The fracture fragment(s) from the middle phalangeal base were reduced and secured using mini-screws.

Results

A clinical evaluation was performed at an average of 42 months after surgery. The average arc of motion for the involved PIP joint was 70° (range, 55°–90°). The average PIP joint motion in the 2 patients with 1 fracture fragment was 85°, and the average PIP joint motion for the remaining 7 patients was 65°. One joint was subluxated with an intra-articular screw. Nine patients had an average flexion contracture of 14°. Seven patients had no pain, and 2 had pain only with heavy activity.

Conclusions

Open reduction and internal fixation of unstable dorsal PIP joint fracture–dislocations using mini-screws can be considered if the fracture fragment(s) can accommodate the screws. The procedure attempts to restore the concave contour of the middle phalangeal base and permits early protected range of motion. The procedure should be approached cautiously, especially in the presence of comminution. Proximal interphalangeal joint range of motion is usually compromised; 8 of our 9 joints had a residual flexion contracture.

Type of study/level of evidence

Therapeutic IV.

Section snippets

Materials and Methods

Retrospective chart reviews and clinical follow-up evaluations were performed on patients having ORIF with mini-fragment screws for unstable volar lip fractures of the PIP joint of the hand at a hand surgery center from December 1998 to April 2004. Patients were identified as candidates for the study by using diagnosis codes from billing records, and all patients with fractures involving the interphalangeal joints were reviewed. One hundred thirty-one patients were identified who had ORIF

Results

At an average of 42 months after surgery (range, 6–66 mo), the average metacarpophalangeal joint arc of motion was 89° for the involved side (range, 75°–90°) and 87° for the contralateral side (range, 70°–95°) (Table 2). The average arc of motion of the affected PIP joints was 70° (range, 55°–90°) and of the contralateral PIP joints was 91° (range, 85°–95°). The involved PIP joints had an average flexion contracture of 14° (range, 0°–30°). The average arc of motion of the distal interphalangeal

Discussion

The goals of treatment of unstable PIP joint dorsal fracture–dislocations include re-establishing articular congruity and providing a stable and concentric joint, thereby permitting early ROM to minimize the risks of joint stiffness or contracture.1 A variety of treatment options for fracture–dislocations of the PIP joint have been presented in the literature, including traction,4, 5, 6 external fixation,7, 8, 9, 10, 11 volar plate arthroplasty,12 hemihamate autograft,3 and ORIF.13, 14, 15, 16,

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