Clinical and functional outcomes of fracture pattern-driven plate osteosynthesis technique for comminuted patellar fractures using multiple miniplates
Abstract
INTRODUCTION: Comminuted patellar fractures, particularly AO/OTA 34-C2 and C3 fractures, present substantial challenges in achieving stable fixation and anatomical reconstruction. Conventional tension-band wiring may fail in such cases due to insufficient mechanical stability. This study aimed to evaluate the clinical and functional outcomes of a fracture pattern-driven plate osteosynthesis technique using multiple miniplates tailored to the intricate morphology of multifragmentary patellar fractures. METHODS: A retrospective review was conducted of 62 patients with AO/OTA 34-C2 or C3 patellar fractures treated between 2018 and 2023 at two academic trauma centers. All patients underwent fixation using a fragment-specific approach involving anterior tension-band plating and miniplates, guided by preoperative CT-based fracture mapping. The outcome measures included radiographic reduction quality, union rate, range of motion (ROM), Lysholm score, and isokinetic quadriceps strength at 6 and 12 months. RESULTS: Anatomical or good reduction was achieved in all cases (72.6% anatomical, 27.4% good), with a 100% union rate and low complication rate (3.2% reoperation rate). The mean final ROM was 132.9° ± 6.8°, and Lysholm scores improved from 70.3 ± 10.0 at 6 months to 89.1 ± 6.7 at 12 months. However, isokinetic peak torque deficits persisted at 12 months (mean 24.6% ± 13.0), and the body mass–normalized extension torque averaged 0.99 ± 0.40 Nm/kg, indicating residual muscle…
How strong is the evidence?
Evidence Hub reads this as a cohort study, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence. Reported size: 62 participants or records.
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