Clinical and Radiographic Outcomes Following Volar-Locked Plating Versus Dorsal Bridge Plating for Distal Radius
Thomas John Carroll1, Akhil Dondapati1, Michaela Malin1
1Department of Orthopaedic Surgery, University of Rochester School, University of Rochester, Rochester, NY.
Purpose:
Distal radius fractures (DRFs) indicated for operative intervention are most commonly treated with volar-locked plating (VLP); however, dorsal bridge plating (DBP) has been used as an alternative fixation method. The purpose of this study was to use a propensity score to match and compare the radiographic and clinical outcomes of patients undergoing isolated VLP or DBP for DRFs.
Methods:
We performed a retrospective, propensity score-matched analysis of patients undergoing isolated VLP or DBP treatment for isolated DRFs from 2015 to 2022 at a single level-1 trauma center. Patients were propensity score-matched by a total of eight demographic and comorbidity factors, AO Foundation/Orthopedic Trauma Association classification, and preoperative Patient-Reported Outcomes Measurement Information System (PROMIS) scores. Our primary outcomes included postoperative complications, wrist and forearm range of motion (ROM), grip strength, and radiographic measurements, including radial height, radial inclination, volar tilt, and articular step-off.
Results:
Overall, 415 DBP and 2075 VLP were successfully propensity score-matched and included in this study. Grip strength and ROM measurements at the 6-month follow-up, including wrist flexion, wrist extension, forearm pronation, forearm supination, radial deviation, and ulnar deviation, were increased in the VLP compared with DBP (P < .05). Complication rates among both the groups were relatively low; however, the rates of malunion and nonunion were significantly higher among the DBP group (P < .05). Radial height, radial inclination, and articular step-off were improved in the VLP group compared with the DBP group (P < .05); however, volar tilt was similar between groups. PROMIS upper extremity and physical function were significantly higher among the VLP group (P < .05). No significant difference was noted in PROMIS pain interference between the groups.
Conclusions:
When compared with DBP, patients undergoing VLP are more likely to have improved clinical and radiographic outcomes. Although improvement in wrist and forearm ROM and radiographic parameters is statistically significant, it may not be clinically relevant.
Type Of Study/Level Of Evidence:
Therapeutic III.
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