Table 2.

Reasons for aseptic revision

Reason for revision	Number of hips (n = 131)
Aseptic loosening	48 (37%)
Corrosion at a modular junction*	40 (31%)
Problems related to MoM bearing	23 (18%)
Retroverted acetabular component with soft tissue impingement	5 (4%)
Liner dissociation	4 (3%)
Instability	4 (3%)
Full-thickness bearing surface wear	3 (2%)
Fractured ceramic liner	1 (0.8%)
Stem fracture	1 (0.8%)
Leg length discrepancy	1 (0.8%)
Removal of painful cable	1 (0.8%)

* Includes both MoM (15) and MoP (25) bearing surfaces; MoM = metal-on-metal; MoP = metal-on-polyethylene.