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Migration of Metal-on-Metal Versus Ceramic-on-Polyethylene Hip Prostheses
- Source :
- Europe PubMed Central
- Publication Year :
- 2003
- Publisher :
- Ovid Technologies (Wolters Kluwer Health), 2003.
-
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.
- Subjects :
- Male
Ceramics
medicine.medical_specialty
medicine.medical_treatment
Radiodensity
Dentistry
Prosthesis Design
Prosthesis
Humans
Medicine
Prosthesis design
Orthopedics and Sports Medicine
Prospective randomized study
Prospective Studies
Range of Motion, Articular
Friction torque
Aged
business.industry
Follow up studies
General Medicine
Middle Aged
Prosthesis Failure
Surgery
Equipment Failure Analysis
Radiography
Acetabular component
Metals
Polyethylene
Female
Hip Joint
Hip Prosthesis
business
Range of motion
Follow-Up Studies
Subjects
Details
- ISSN :
- 0009921X
- Volume :
- 412
- Database :
- OpenAIRE
- Journal :
- Clinical Orthopaedics & Related Research
- Accession number :
- edsair.doi.dedup.....afc7ebb9491fef60d3eeb49c4aedc255