Total Knee Arthroplasty Outcomes Depending on the Degree 11 of Angular Deformity

Abstract

The analysis of total knee arthroplasty results was performed in 106 patients operated on for III stage of deforming gonarthrosis. All patients were divided into 2 groups depending on the presence of the angular extremity axis deformity. Clinical and functional assessment was performed using visual analog scale, Joseph & Kaufman scale, SF-36 questionnaire. Treatment results were evaluated in 3, 6 months and 1, 3, 5 years after intervention. In the group of patients with axial leg deformity the duration of surgical intervention, intraoperative blood loss and postoperative hospitalization period were higher than in patients with normal leg axis but the differences were not significant. The height of the implant insert was 12 (8-14) mm with normal axis and 14 (14-15) mm with axial deformity ( p =0.000187). Correction of the leg axis during arthroplasty required larger bone cuts and soft tissue release but the parameters characterizing leg axis normalization did not differ statistically significant between the groups. However in 5 years after intervention the patients with normal lower extremity axis showed reliably better results by all scales and questionnaires.

Keywords

knee arthroplasty / angular deformities / axis correction / corrective osteotomy

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