Preoperative Rather Than Postoperative Intra-Articular Cartilage Degeneration Affects Long-Term Survivorship of Periacetabular Osteotomy

Purpose To determine whether intra-articular lesions changed in short-term follow-up after periacetabular osteotomy (PAO) and the lesion changes impacted long-term survivorship of PAO. Methods We reviewed patients with hip dysplasia who underwent PAO arthroscopic observation between 1990 2001. Patients second-look arthroscopy were included. The correlations outcome analyzed for >10 years follow-up. possible risk factors included demographic (age, sex, body mass index), radiographic (Tönnis grade, lateral center-edge angle, Tönnis acetabular head index, crossover sign, posterior wall joint congruity), findings (full-thickness at time arthroscopy). Results A total 64 (72 hips) studied. Second-look was performed a median 1.4 Intra-articular observed 93% acetabulum, 81% femoral head, 97% labrum, respectively. These unchanged 74% 76% 79% Cartilage repair acetabulum 24% 17% hips, Labral occurred 10%. not predictor failure. Multivariate analysis identified International Repair Society grade 4 as an independent factor Conclusions Our results suggest that prevents further deterioration mild cartilage some cases advanced degenerations short term. However, these postoperative associated survivorship. Thus, appropriate surgical indications based on preoperative degeneration is paramount to achieving success Level Evidence Level IV, therapeutic study.