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DOI: 10.1055/s-0041-1740401
Radiographic Outcomes following K-Wire Augmentation of Dorsal Spanning Plate Fixation for Intra-Articular Fractures of the Distal Radius
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Abstract
Background Restoration of articular surface alignment is critical in treating intra-articular distal radius fractures. Dorsal spanning plate fixation functions as an internal distraction mechanism and can be advantageous in the setting of highly comminuted fracture patterns, polytrauma patients, and patients with radiocarpal instability. The addition of K-wires to support articular surface reduction potentially augments fracture repair stability.
Questions/Purposes We examined the radiographic outcomes and maintenance of reduction in patients with comminuted intra-articular distal radius fractures treated with K-wire fixation of articular fragments followed by dorsal spanning plate application.
Patients and Methods We reviewed 35 consecutive patients with complex intra-articular distal radius fractures treated with dorsal spanning plate and K-wire fixation between April 2016 and October 2019. AO classification was recorded: B1 (3), B3 (2), C2 (2), C3 (28). A two-tailed paired t-test was used to compare findings immediately post-dorsal spanning plate surgery and at final follow-up after dorsal spanning plate removal.
Results Mean patient age was 43.3 years (19–78 years). Mean follow-up was 7.8 months (SD 4.3 months) from surgery and 2.5 months from pin removal (SD 2.6 months). All patients achieved radiographic union. Radial height (mean interval change (MIC) 0.2 mm, SD 2.2, p = 0.63), articular step-off (MIC 0.1 mm, SD 0.6 mm, p = 0.88), and radial inclination (MIC −1.1 degrees, SD 3.7 degrees, p = 0.10) did not change from post-surgery to final follow-up. Ulnar variance (MIC −0.9 mm, SD 2.0 mm, p = 0.02) and volar tilt (MIC −1.5 degrees, SD 4.4 degrees, p = 0.05) were found to have decreased.
Conclusion Dorsal spanning plate augmented with K-wire fixation for comminuted intra-articular distal radius fractures in polytrauma patients allows for immediate weightbearing and maintains articular surface alignment at radiographic union and may provide better articular restoration than treatment with dorsal spanning plate alone.
Level of Evidence This is a Level IV, therapeutic study.
Ethical Approval
The study is approved by the JHS Clinical Research Review Committee (CRRC; IRB Protocol Number: 20200332).
Publication History
Received: 08 April 2021
Accepted: 22 October 2021
Article published online:
23 December 2021
© 2021. Thieme. All rights reserved.
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