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Hip wear and friction simulator test of a novel acetabular cup
| Content Provider | Semantic Scholar |
|---|---|
| Copyright Year | 2010 |
| Abstract | It has been shown that reduced clearance in metal-on-metal hip joints have the potential to reduce wear during the running-in phase. Cementless cups in MoM devices are designed to be press fitted into the acetabulum to provide fixation. However, press fitting the cup into the acetabulum can generate non-uniform compressive stresses on the cup and consequently cause non-uniform cup deformation. Clinical studies have shown radiolucent lines around the cup of low clearance bearings possibbly as a result of increased frictional torque. In order to benefit from the low wear generated by low clearance components and at the same time to avoid head seizure and high frictional torque, a deflection compensation acetabular cup, (DefCom) has been developed. The device is designed to compensate for in vivo deformations, without compromising the tribological performance of the device. The articulating sphere provides for a low clearance bearing area, whilst maintaining the standard Birmingham Hip Resurfacing (BHR) clearance in the non-articulating sphere. The low clearance at the point of articulation will also help to reduce wear and potential metal ion release. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.ors.org/Transactions/56/2245.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
