Results of hip arthroplasty using Paavilainen technique in patients with congenitally dislocated hip

Abstract

The purpose of the study was to analyze the medium- and long-term results of hip arthroplasty using Paavilainen technique in patients with the congenitally dislocated hip. Methods: From 2001 to 2012 180 operations were carried out were using the Paavilainen technique in 140 patients with high dislocation of the hip (Crowe IV). All patients were clinically evaluated using the Harris Hip Score (HHS), VAS and radiography. Statistical analysis was performed using the Pearson correlation coefficients, multiple regression analysis and classification trees analysis. Results: The average Harris score improved from preoperative 41.6 (40,3-43,5) to 79.3 (77,9-82,7) at final follow-up, and the difference was significant. Early complications were 9% (the most frequent were fractures of the proximal femur), later - 16.7% (pseudoarthrosis of the greater trochanter, 13.9%; disclocations-1,1%, aseptic loosening of the components - 1.7%), reoperation performed in 8.3% of cases. Such factors as age and limb length has statistically significant effect on functional outcomes. Established predictive model allows to get the best possible functional outcome in such patients with severe dysplasia. Conclusions: Total Hip arthroplasty using the Paavilainen technique is an effective method of surgical treatment in patients with the congenitally dislocated hip, but it is technically difficult operation with a high incidence of complications in comparison with standard primary total hip replacement.

Keywords

• дисплазия тазобедренного сустава
• эндопротезирование
• остеотомия
• hip dysplasia
• arthroplasty
• osteotomy