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- W2003465489 abstract "Objectives: Locked plating constructs may be too stiff to reliably promote secondary bone healing. This study used a novel imaging technique to quantify periosteal callus formation of distal femur fractures stabilized with locking plates. It investigated the effects of cortex-to-plate distance, bridging span, and implant material on periosteal callus formation. Design: Retrospective cohort study. Setting: One Level I and one Level II trauma center. Patients: Sixty-four consecutive patients with distal femur fractures (AO types 32A, 33A-C) stabilized with periarticular locking plates. Intervention: Osteosynthesis using indirect reduction and bridge plating with periarticular locking plates. Main Outcome Measurement: Periosteal callus size on lateral and anteroposterior radiographs. Results: Callus size varied from 0 to 650 mm2. Deficient callus (20 mm2 or less) formed in 52%, 47%, and 37% of fractures at 6, 12, and 24 weeks postsurgery, respectively. Callus formation was asymmetric, whereby the medial cortex had on average 64% more callus (P = 0.001) than the anterior or posterior cortices. A longer bridge span correlated minimally with an increased callus size at Week 6 (P = 0.02), but no correlation was found at Weeks 12 and 24 postsurgery. Compared with stainless steel plates, titanium plates had 76%, 71%, and 56% more callus at Week 6 (P = 0.04), Week 12 (P = 0.03), and Week 24 (P = 0.09), respectively. Conclusions: Stabilization of distal femur fractures with periarticular locking plates can cause inconsistent and asymmetric formation of periosteal callus. A larger bridge span only minimally improves callus formation. The more flexible titanium plates enhanced callus formation compared with stainless steel plates." @default.
- W2003465489 created "2016-06-24" @default.
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- W2003465489 date "2010-03-01" @default.
- W2003465489 modified "2023-10-16" @default.
- W2003465489 title "Locked Plating of Distal Femur Fractures Leads to Inconsistent and Asymmetric Callus Formation" @default.
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- W2003465489 doi "https://doi.org/10.1097/bot.0b013e3181be6720" @default.
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