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  • Title: Functional impact of tibial malrotation following intramedullary nailing of tibial shaft fractures.
    Author: Theriault B, Turgeon AF, Pelet S.
    Journal: J Bone Joint Surg Am; 2012 Nov 21; 94(22):2033-9. PubMed ID: 23172320.
    Abstract:
    BACKGROUND: Tibial malrotation is a complication that is seen in approximately 30% of patients following locked intramedullary nailing. In this cohort study, we evaluated the hypothesis that tibial malrotation would lead to impaired functional outcomes. METHODS: Patients with a unilateral tibial shaft fracture who were managed with intramedullary nailing between 2003 and 2007 were identified with use of ICD-10 (International Classification of Diseases, 10th Revision) codes. After institutional review board approval and written informed consent had been obtained, specific assessment of eligible patients was achieved with use of computed tomography, functional measures (Lower Extremity Functional Scale, Olerud-Molander Score, six-minute walk test), and physical examination. Measures were compared between patients with and without tibial malrotation (defined as tibial rotation of ≥ 10°) on imaging studies. RESULTS: Of the 288 patients who were identified, 100 were eligible for the study and seventy consented to participate. The mean duration of follow-up (and standard deviation) for these seventy patients was 58 ± 11 months. Twenty-nine patients (41%) had tibial malrotation. Lower Extremity Functional Scale scores were similar between the groups with and without malrotation (mean, 70.8 ± 8.6 points compared with 72.6 ± 8.7 points; p = 0.41). The results for the other functional tests were also similar. CONCLUSIONS: Despite high rates of tibial malrotation following locked intramedullary nailing of isolated tibial diaphyseal fractures, this finding does not have a significant intermediate-term functional impact.
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