Background Volar plate avulsion fractures in phalanges are relatively common injuries. While surgical treatment can help reduce limitations in motion after injury, the small size of the fracture fragment can make the procedure challenging. In this study, we used hook plate fixation as a surgical technique for treating volar avulsion fractures in phalanges and evaluated its radiological and clinical outcomes.
Methods The medical records of eight patients (nine digits) with volar plate avulsion fractures of the middle phalanx were retrospectively reviewed. All fractures were treated with a 1.5-mm hook plate after open reduction. Radiologic evaluations were performed using simple radiographs, and clinical outcomes were assessed through range of motion, instability, and pain.
Results The mean follow-up period was 4.89 months (range, 1–9 months). All nine digits achieved bone union at the final follow-up. The mean union time was 2.2 months (range, 1–4 months). In all patients, the range of motion in the proximal interphalangeal joint was 85° (range, 70°–100°) before implant removal and 89.4° (range, 80°–100°) after implant removal. All patients demonstrated no joint instability and no residual pain.
Conclusion Using a hook plate for volar plate avulsion fractures presents a promising alternative to existing fixation methods. Its biomechanical advantages and ease of fabrication make it a valuable tool in hand surgery.
Level of evidence: IV.
The fixation methods that can be used for unstable posterior pelvic ring injuries have undergone many innovative changes due to the recent development of surgical and imaging techniques. After understanding the appropriate indications of first and second sacroiliac screw fixation and spinopelvic fixation, innovative methods, including the trans-sacral screw fixation, posterior tension-band plate fixation, and the S2AI screw, would be chosen and applied. Considering the anatomical complexity and proximity to the surrounding vessels and nerves in the posterior fixation, the safe zone according to the fixation options should be well understood in preoperative planning. Moreover, the functional reduction of the posterior pelvic ring through the reduction and fixation of the anterior lesion should be achieved before placing the implant to reduce the number of malposition-related complications.
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