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Year : 2020  |  Volume : 4  |  Issue : 3  |  Page : 146-151

Factors affecting the outcome in the correction of angular deformities around the knee using extraperiosteal tension band plate: A local experience

Department of Reconstructive Orthopaedics, Division of Paediatric Orthopaedic, King Fahad Medical City, Riyadh, Saudi Arabia

Correspondence Address:
Dr. Munzir I. A. Gaboura
Department of Reconstructive Orthopaedics, Division of Paediatric Orthopaedic, King Fahad Medical City, PO Box: 59046, Riyadh 11525
Saudi Arabia
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jmsr.jmsr_42_20

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Objectives: The aim of this study is to reflect on our local experience with extraperiosteal tension band plate around the knee and the factors that affect the outcome. Methods: This is a retrospective review of 21 patients (34 limbs) and involving 35 segments gathered and treated during a period from 2007 to 2018 by a single surgeon employing a standardized technique. The inclusion criteria were all patients with coronal plane deformities around the knee with an open physis, regardless of pathological background. Patients who had previous or concurrent surgeries for the same problem were excluded from the study. Patients' age and body mass index were recorded. Mechanical axis deviation (MAD) distance, tibio-femoral (T-F) angle, mechanical lateral distal femoral angle, and mechanical medial proximal tibia angle were measured from a standing anteroposterior radiograph. Results: The average age was 6.5 years, and the mean duration of treatment was 13.6 months, with “sick physis” requiring longer durations. The mean rate of correction of T-F angle was 1.5°/month. The MAD distance improved at an average rate of 2.4 mm/month. The distal femur physis improved at a rate of 0.69°/month, while the proximal tibia physis improved at a rate of 0.58°/month. Conclusion: The severity of preoperative deformity influenced the rate of correction, and this is further influenced by the pathological background and physis treated, femora faster than tibiae. Patients with more than 3 years of growth remaining showed faster correction.

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