Severe polyethylene wear in uncemented acetabular cup system components
| Autor: | James E. Scott, J. V. Patel, Warwick J.P. Radford |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
musculoskeletal diseases
medicine.medical_specialty Medullary cavity business.industry technology industry and agriculture Polyethylene liner Dentistry Polyethylene equipment and supplies Surgery chemistry.chemical_compound chemistry medicine Orthopedics and Sports Medicine Implant business Total hip arthroplasty |
| Zdroj: | The Journal of Arthroplasty. 14:635-636 |
| ISSN: | 0883-5403 |
| DOI: | 10.1016/s0883-5403(99)90090-6 |
| Popis: | We report 5 cases of severe failure of the polyethylene liner at 4 to 7.4 years after uncemented anatomic medullary locking (AML) total hip arthroplasty, using the acetabular cup system (ACS). The mode of failure was by a combination of wear through to the metal backing and liner fracture. Four of the 5 cases were associated with a 32-mm head. The ACS design is flawed because of a lack of hemispherical geometry resulting in rim loading on a region of the liner that has the thinnest polyethylene. All patients with this type of implant should be monitored for evidence of excessive polyethylene wear. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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