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  • Title: The posterior shearing tibial plateau fracture: treatment and results via a posterior approach.
    Author: Bhattacharyya T, McCarty LP, Harris MB, Morrison SM, Wixted JJ, Vrahas MS, Smith RM.
    Journal: J Orthop Trauma; 2005; 19(5):305-10. PubMed ID: 15891538.
    Abstract:
    OBJECTIVES: This study was designed to describe the fracture patterns and early results of treatment of posterior shearing tibial plateau fractures. DESIGN: Retrospective case series. SETTING: Tertiary care hospital. PATIENTS: Thirteen patients identified from prospective trauma database with posterior shearing tibial plateau fractures. INTERVENTION: Open reduction and internal fixation through a posterior approach to the knee. MAIN OUTCOME MEASUREMENTS: Functional outcome assessed by Musculoskeletal Functional Assessment score and Visual Analogue Scale pain scores. Clinical and radiographic outcome. RESULTS: A consistent fracture pattern was identified with a primary, inferiorly displaced posteromedial shear fracture with variable amounts of lateral condylar impaction. The average duration of clinical patient follow-up was 20 (range, 13-27) months. All fractures healed after index surgery. Two complications (1 wound dehiscence and 1 flexion contracture) were all managed nonoperatively. Three independent surgeons graded patients' articular reduction, with good interobserver reliability (intraclass correlation coefficient = 0.82). The average Musculoskeletal Function Assessment dysfunction score for the 9 patients who responded was 19.5/100, and average resting Visual Analogue Scale pain score was 1.8 cm/10 cm, indicating good function. The functional outcome score was significantly related to the quality of articular reduction (P < 0.017, R = 0.456). CONCLUSIONS: Posterior shearing tibial plateau fractures form a consistent pattern. They can be successfully managed using a posterior approach with direct reduction and buttress fixation of articular fragments. Quality of articular reduction is one factor that influences short-term functional outcome.
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