Journal
JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME
Volume 93B, Issue 8, Pages 1001-1004Publisher
BRITISH EDITORIAL SOC BONE JOINT SURGERY
DOI: 10.1302/0301-620X.93B8.26936
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Funding
- Engineering and Physical Sciences Research Council [EP/I019103/1, EP/G032483/1, EP/F043872/1] Funding Source: researchfish
- EPSRC [EP/G032483/1, EP/I019103/1, EP/F043872/1] Funding Source: UKRI
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Bioengineering reasons for increased wear and failure of metal-on-metal (MoM) bearings in hip prostheses have been described. Low wear occurs in MoM hips when the centre of the femoral head is concentric with the centre of the acetabular component and the implants are correctly positioned. Translational or rotational malpositioning of the components can lead to the contact-patch of the femoral component being displaced to the rim of the acetabular component, resulting in a ten- to 100-fold increase in wear and metal ion levels. This may cause adverse tissue reactions, loosening of components and failure of the prosthesis.
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