TY - JOUR

T1 - Clinical and radiological outcome after periacetabular osteotomy

T2 - a cross-sectional study of 127 hips operated on from 1999-2008

AU - Dahl, Line B

AU - Dengsø, Kristine

AU - Bang-Christiansen, Karl

AU - Petersen, Michael M

AU - Stürup, Jens

PY - 2014/5/13

Y1 - 2014/5/13

N2 - PURPOSE: Few papers have described results after periacetabular osteotomy (PAO) and risk factors for conversion to total hip arthroplasty (THA). The aim of the present paper was to analyse clinical and radiographic outcome, survival of the hip joint and risk factors of early conversion to THA in patients with PAO.BASIC PROCEDURES: In the period 1999-2008, 93 patients (127 hips, median patient age 31, range 13-49 years) were operated on with PAO. Median follow-up was 7 (SD 2.1) years. Analyses of clinical and radiographic examinations, including WOMAC, were performed. Osteoarthritis was measured using Tönnis grade. Survival was assessed by the Kaplan-Meier method and predictors of conversion to THA were calculated using Cox regression analysis with THA as defined endpoint.MAIN FINDINGS: Centre-edge angle improved significantly with a mean of 8.7 (95% CI: 7.1; 10.3) preoperatively to a mean of 24.6 (95% CI: 22.6; 26.6) at follow-up. Likewise the acetabular roof obliquity angle improved significantly with a mean of 21.2 (95% CI: 19.7; 22.6) preoperatively to 8.7 (95% CI: 7.1; 10.4) at follow-up. Eleven out of 127 hips had conversion to THA. The 11.7 years cumulated hip joint survival rate was 85% (95% CI: 0.753; 0.945). Significant predictors of converting to THA were preoperative high grade of OA and postoperative high degree of acetabular roof obliquity angle. An improvement was found in Harris Hip Score pain score after receiving a PAO (p = 0.01).CONCLUSIONS: Our results, with almost 12 years survival data, are comparable with the literature. PAO is considered as an effective treatment for young adults with painful hip dysplasia, especially when preoperative criteria for conversion to THA are highlighted.

AB - PURPOSE: Few papers have described results after periacetabular osteotomy (PAO) and risk factors for conversion to total hip arthroplasty (THA). The aim of the present paper was to analyse clinical and radiographic outcome, survival of the hip joint and risk factors of early conversion to THA in patients with PAO.BASIC PROCEDURES: In the period 1999-2008, 93 patients (127 hips, median patient age 31, range 13-49 years) were operated on with PAO. Median follow-up was 7 (SD 2.1) years. Analyses of clinical and radiographic examinations, including WOMAC, were performed. Osteoarthritis was measured using Tönnis grade. Survival was assessed by the Kaplan-Meier method and predictors of conversion to THA were calculated using Cox regression analysis with THA as defined endpoint.MAIN FINDINGS: Centre-edge angle improved significantly with a mean of 8.7 (95% CI: 7.1; 10.3) preoperatively to a mean of 24.6 (95% CI: 22.6; 26.6) at follow-up. Likewise the acetabular roof obliquity angle improved significantly with a mean of 21.2 (95% CI: 19.7; 22.6) preoperatively to 8.7 (95% CI: 7.1; 10.4) at follow-up. Eleven out of 127 hips had conversion to THA. The 11.7 years cumulated hip joint survival rate was 85% (95% CI: 0.753; 0.945). Significant predictors of converting to THA were preoperative high grade of OA and postoperative high degree of acetabular roof obliquity angle. An improvement was found in Harris Hip Score pain score after receiving a PAO (p = 0.01).CONCLUSIONS: Our results, with almost 12 years survival data, are comparable with the literature. PAO is considered as an effective treatment for young adults with painful hip dysplasia, especially when preoperative criteria for conversion to THA are highlighted.

KW - Acetabulum

KW - Adolescent

KW - Adult

KW - Arthroplasty, Replacement, Hip

KW - Cross-Sectional Studies

KW - Denmark

KW - Female

KW - Follow-Up Studies

KW - Hip Dislocation, Congenital

KW - Humans

KW - Incidence

KW - Male

KW - Middle Aged

KW - Osteoarthritis, Hip

KW - Osteotomy

KW - Postoperative Complications

KW - Range of Motion, Articular

KW - Retrospective Studies

KW - Risk Factors

KW - Treatment Outcome

KW - Young Adult

U2 - 10.5301/hipint.5000129

DO - 10.5301/hipint.5000129

M3 - Journal article

C2 - 24817397

VL - 24

SP - 369

EP - 380

JO - HIP International

JF - HIP International

SN - 1120-7000

IS - 4

ER -