Poor results of the cementless total hip arthroplasty with a nonporous coated acetabular component: AcSys Shearer Cup.

The intermediate radiological results with the AcSys Shearer Cup were unsatisfactory because of the high loosening rate, although the revision rate was low. The nonporous outer surface and the poor fixation mechanism between the metal shell and liner may have contributed to the high failure rate. Regular radiological review is recommended when this cup is used because early loosening is often painless.