title: The temporal progression of pelvic osteolysis after uncemented total hip arthroplasty.
abstract: This study examined the natural progression of pelvic osteolysis post uncemented total hip arthroplasty. Serial radiographs from 145 total hip arthroplasties with minimum 10-year follow-up were examined. Thirty-two lesions were identified in 25 hips and their 2-dimensional radiographic size over time was measured via computer. Lesion growth rate averaged 42.7 +/- 49.0 mm2/y. Linear models were generally a good fit for lesion growth as evidenced by a high mean r2 value (0.77 +/- 0.18); lesions progressed steadily during the first 10 postoperative years. Although lesions were first radiographically evident 5.7 years postarthroplasty, the x-intercept of the linear model, approximating the mean time when the lesions first began to develop, averaged 1.3 years. Because this study expands our understanding of when and how peri-acetabular lesions develop, it can be useful to clinicians in determining how often to see patients postoperatively.
authors.affiliation: Anderson Orthopaedic Research Institute, Alexandria, Virginia 22307, USA.
authors.forename: Nobuto
authors.initials: N
authors.lastname: Kitamura
authors.forename: Christi J
authors.initials: CJ
authors.lastname: Sychterz-Terefenko
authors.forename: Charles A
authors.initials: CA
authors.lastname: Engh
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging / Q000473:pathology; D019644:Arthroplasty, Replacement, Hip; D018450:Disease Progression; D005260:Female; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D010014:Osteolysis / Q000000981:diagnostic imaging / Q000473:pathology*; D020959:Polyethylene; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000473:pathology*; D011475:Prosthesis Failure; D011859:Radiography; D018709:Statistics, Nonparametric; D013997:Time Factors
chemical_list: D020959:Polyethylene