ArticleJournal of orthopaedic surgery and research2025
Why does tension band wiring fail in transverse patellar fractures? Radiographic insights from a 10-years retrospective cohort.
Article in Journal of orthopaedic surgery and research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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5 authors.
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Abstract
backgroundThe aim of this study was to identify the radiographic parameters associated with failure of tension band wiring (TBW) in the treatment of transverse patellar fractures, with the goal of guiding surgical decision-making. MATERIALS AND
methodsA total of 76 patients underwent surgical treatment for patellar fractures at Trakya University between January 2013 and December 2022. We retrospectively analyzed 32 patients who met the study's inclusion criteria for transverse fractures (AO Type 34- C1) treated with TBW. Radiographic parameters assessed included patellar width, inter-K-wire distance, K-wire-to-patella ratios, knot configuration, and K-wire length, all evaluated for their potential association with fixation failure. Failure was defined as cerclage wire slippage or breakage. Statistical analyses were conducted using SPSS and Jamovi software. Descriptive statistics, t-tests, chi-square or Fisher's exact tests, logistic regression, and ROC analysis were performed. A p-value < 0.05 was considered significant.
resultsThe mean age was 50 years ± 15.8 (range 26-80), with 8 women (25%) and 24 men (75%). Nine patients (28.1%) experienced TBW failure. Notably, single-knot constructs had significantly higher failure rates (66.7% vs. 19.2%; OR = 0.119, 95% CI [0.017-0.843], p = 0.038). Increased K-wire length was associated with failure (p = 0.008; cutoff 69.1 mm, AUC = 0.785). Patella-K-wire length ratio was higher in failures (p = 0.035). Lateral K-wire to articular distance and lateral K-wire to articular distance surface to patella thickness ratio were also significant predictors in slippage group (p = 0.046 and p = 0.031).
conclusionThe number of knots, K-wire length, and specific radiographic parameters are important predictors of TBW failure. Attention to construct configuration and K-wire placement is crucial to minimize failure risk.
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