Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
Pabinger, C; Biedermann, R; Stöckl, B; Fischer, M; Krismer, M.
Migration of metal-on-metal versus ceramic-on-polyethylene hip prostheses.
Clin Orthop Relat Res. 2003; 124(412):103-110
Doi: 10.1097/01.blo.0000068766.86536.d3
Web of Science
PubMed
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- Führende Autor*innen der Med Uni Graz
- Pabinger Christoph
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- Abstract:
- In a prospective randomized study, 32 metal-on-metal prostheses and 29 ceramic-on-polyethylene prostheses of similar design were implanted in 59 patients. Radiolucency, cup migration, wear, and function were examined after a minimum of 2 years followup (followup rate, 87%). The purpose of the current study was to evaluate whether higher frictional torque of metal-on-metal will lead to a higher rate of early metal-on-metal cup loosening. A computer-assisted method was used for wear and migration measurements of the acetabular component. Metal-on-metal prostheses migrated in a craniocaudad direction significantly less than ceramic-on-polyethylene prostheses. The mean total migration for both types of prostheses exceeded 1.5 mm at 2 years. Clinically, no difference between the two prostheses regarding activity, pain, or range of motion was found at 2 years. As migration of metal-on-metal prostheses was not higher in comparison with ceramic-on-polyethylene prostheses, the expected higher frictional torque of metal-on-metal prostheses did not increase migration during short-term followup. The different debris produced by both bearings did not influence the short-term results of this study, but might cause different long-term results.
- Find related publications in this database (using NLM MeSH Indexing)
- Aged -
- Ceramics -
- Equipment Failure Analysis - methods
- Female -
- Follow-Up Studies -
- Hip Joint - radiography
- Hip Prosthesis -
- Humans -
- Male -
- Metals -
- Middle Aged -
- Polyethylene -
- Prospective Studies -
- Prosthesis Design -
- Prosthesis Failure -
- Range of Motion, Articular -