Polyethylene Wear in Unicompartmental Knee Arthroplasty
| Autor: | Robb Wj rd, Bartley Re, Sweeney Hj, Stulberg Sd |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
musculoskeletal diseases
Subluxation medicine.medical_specialty business.industry medicine.medical_treatment Delamination Dentistry General Medicine Polyethylene medicine.disease Prosthesis Surgery Abrasion (geology) chemistry.chemical_compound chemistry Orthopedic surgery medicine Orthopedics and Sports Medicine Femoral component Unicompartmental knee arthroplasty business |
| Zdroj: | Clinical Orthopaedics and Related Research. 299:18 |
| ISSN: | 0009-921X |
| DOI: | 10.1097/00003086-199402000-00003 |
| Popis: | From 1983 to 1989, 147 unicompartmental knee arthroplasties (UKA) were performed. Eighteen knees (13%) have required revision: there were 11 (37%) Porous Coated Anatomic (PCA), three (8%) Microloc, and four (17%) Fibermesh UKAs. Retrieved implants were examined to determine the pattern and extent of polyethylene wear. Wear was severe in each series and was characterized by delamination, pitting, peripheral cracking, deformation, and abrasion. Polyethylene failure appeared to result from large localized stresses resulting from lack of conformity of the articular geometries of the prostheses. Progressive subluxation of the implants occurred that produced very high localized contact stresses at the periphery of the tibial component where the polyethylene was thinnest |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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