biostudies-literatureUnknown479(5)Stetzelberger VM<h4>Background</h4>Periacetabular osteotomy (PAO) has been shown to be a valuable option for delaying the onset of osteoarthritis in patients with hip dysplasia. Published studies at 30 years of follow-up found that postoperative anterior overcoverage and posterior undercoverage were associated with early conversion to THA. The anterior and posterior wall indices are practical tools for assessing AP coverage on standard AP radiographs of the pelvis pre-, intra-, and postoperatively. However, no study that we know of has evaluated the relationship between the postoperative anterior and posterior wall indices and survivorship free from arthroplasty.<h4>Questions/purposes</h4>In a study including patients after PAO for developmental dysplasia of the hip (DDH), we evaluated whether the acetabuClinical orthopaedics and related research1052-1065https://www.ebi.ac.uk/biostudies/studies/S-EPMC8052033biostudies-literatureThe Acetabular Wall Index Is Associated with Long-term Conversion to THA after PAO.PMC8052033Siebenrock KASchwab JMTannast MStetzelberger VMLeibold CSSteppacher SDfalseThe Acetabular Wall Index Is Associated with Long-term Conversion to THA after PAO.<h4>Background</h4>Periacetabular osteotomy (PAO) has been shown to be a valuable option for delaying the onset of osteoarthritis in patients with hip dysplasia. Published studies at 30 years of follow-up found that postoperative anterior overcoverage and posterior undercoverage were associated with early conversion to THA. The anterior and posterior wall indices are practical tools for assessing AP coverage on standard AP radiographs of the pelvis pre-, intra-, and postoperatively. However, no study that we know of has evaluated the relationship between the postoperative anterior and posterior wall indices and survivorship free from arthroplasty.<h4>Questions/purposes</h4>In a study including patients after PAO for developmental dysplasia of the hip (DDH), we evaluated whether the acetabu2021-01-01T00:00:00Z2021 May2025-04-04T10:17:55.589Z2025-04-04T10:17:55.589ZS-EPMC80520333360563110.1097/CORR.000000000000164110.1097/corr.0000000000001641