Evaluation of Double Tibial Osteotomy Results in Patients With Genu Varum in Addition to Tibia Vara



Nazem K¹ ; Fouladi A² Show Affiliations
Source: Journal of Isfahan Medical School Published:2012

Abstract

Background: genu varum is the complex deformity in patients with a known disease such as rickets or osteomalacia. In addition to deformity and deviation in proximal of tibia the patients have bowing and deviation in the middle and distal part of tibia (tibia vara). This causes complications and significant disability in these patients. In the current study we performed osteotomy tibia on patients in the two proximal and distal levels, and then evaluated radiologic parameters related to correction of alignment of patients. Methods: This is a prospective clinical trial. 15 patients with genu varum associated with bowing of the middle and distal part of tibia were selected. Alignment view was taken before and after the operation (after 2-3 months), and the improvement of radiological parameters after double level osteotomy of tibia were evaluated. Findings: Mean preoperative and postoperative tibia femoral angles were 18.3 and 3.93, respectively. Mean preoperative and postoperative MPTA were 79.13 and 89.09, respectively. Mean preoperative and postoperative LDTA were 96.40 and 88.73. 73% of patients (II case) had normal mechanical akis of limb after the operation. Improvement of all angles was statistically significant. Conclusion: In patients with genu varum in addition to deformity of middle and distal part of tibia, correction of limb alignment with one level osteotomy is impossible. Osteotomy in proximal and distal part of tibia can significantly correct limb alignment, and maintain joint orientation in its normal state. © 2012, Isfahan University of Medical Sciences(IUMS). All rights reserved.