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.
Highlights
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
Прослежены результаты 136 операций (76% от всех наблюдений) в сроки от 12 мес. до 10 лет, средний период наблюдения составил 26,3 месяца (95% ДИ от 22,6 мес. до 29,9 мес.)
Укорочение нижней конечности до операции составило 47,2 мм (95% ДИ от 43,3 до 51,2) min 20 мм, max 80 мм
Summary
При анализе среднесрочных и отдаленных результатов средний балл по Харрису вырос в среднем с 41,6 (95% ДИ от 40,3 до 43,5) до 79,3 (95% ДИ от 77,9 до 82,7). Ранние осложнения составили 9%, (наиболее частыми были трещины проксимального отдела бедренной кости), поздние – 16,7% (ложный сустав и замедленная консолидация большого вертела – 13,9%; вывихи – 1,1%; асептическое расшатывание компонентов – 1,7%), повторные оперативные вмешательства выполнены в 8,3% случаях. Выявлено статистически значимое влияние возраста и изменения длины конечности на результаты операции. Позволяющая определить, в каком возрасте и с какими техническими особенностями необходимо оперировать таких пациентов для получения максимально возможного функционального результата. Эндопротезирование тазобедренного с использованием методики Paavilainen является эффективным методом хирургического лечения высокого вывиха бедра, однако сопряжено со значительными техническими трудностями и высокой частотой осложнений в сравнении со стандартным первичным эндопротезированием
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