The Incidence of Acetabular Osteolysis in Young Patients With Conventional versus Highly Crosslinked Polyethylene
| Autor: | Jin Jun Zhu, Ryan M. Nunley, John C. Clohisy, Nathan A. Mall, Robert L. Barrack, William J. Maloney |
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| Rok vydání: | 2011 |
| Předmět: |
Adult
Male musculoskeletal diseases medicine.medical_specialty Osteolysis Relative incidence Arthroplasty Replacement Hip Dentistry Prosthesis Design chemistry.chemical_compound Hip implant Highly crosslinked polyethylene Humans Medicine Orthopedics and Sports Medicine Retrospective Studies Symposium: Papers Presented at the Hip Society Meetings 2010 business.industry Incidence Incidence (epidemiology) technology industry and agriculture Acetabulum Femur Head General Medicine Middle Aged Polyethylene equipment and supplies medicine.disease Prosthesis Failure Surgery Equipment Failure Analysis Radiography Cross-Linking Reagents chemistry Orthopedic surgery Female Hip Joint Hip Prosthesis business |
| Zdroj: | Clinical Orthopaedics & Related Research. 469:372-381 |
| ISSN: | 0009-921X |
| Popis: | Osteolysis is a major mode of hip implant failure. Previous literature has focused on the amount of polyethylene wear comparing highly crosslinked polyethylene (HXPLE) with conventional liners but has not clarified the relative incidence of osteolysis with these two liners.We determined (1) the incidence of osteolysis in HXLPE versus conventional polyethylene (CPE), (2) the ability to detect and evaluate the size of lytic lesions using radiographs compared with CT scans, (3) head penetration in hips without and with lysis, and (4) determined whether acetabular position, head size, and UCLA activity score contributed to lysis.We compared head penetration and osteolysis on plain radiographs and presence and volume of osteolysis on CT scans in 48 patients with HXLPE (mean, 46.5 years) and 50 patients with CPE (mean, 43.2 years). The minimum followup was 5 years (average, 7.2 years; range, 5.1-10.9 years),Osteolysis was apparent on CT in a larger number of patients with CPE liners than HXLPE liners: 12 of 50 (24%) versus one of 48 (2%), respectively. We found no correlation between head penetration and volume of osteolytic lesions. Head penetration was greater in patients with osteolysis. Smaller head sizes were associated with greater wear and those with osteolysis had smaller head sizes; however, there was no difference in acetabular component position or UCLA activity in those with lysis compared with those without.HXLPE diminished the incidence of osteolysis, but the lack of correlation between penetration and volume of osteolysis suggests other factors other than wear contribute to the development of osteolysis.Level III, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence. |
| Databáze: | OpenAIRE |
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