Fig. 6.

Before (a) and after (b) cement-in-cement acetabular and femoral revision for instability. The monoblock femoral component was revised to facilitate exposure, because of head size incompatibility and to allow for increase in offset. Note that the femoral neck was re-cut to allow careful inspection of the cement mantle. The 125-mm short 44-mm offset cement-in-cement revision stem has been used in this case, avoiding the need to remove the old metal centraliser from the original cement mantle. Reproduced with permission and copyright© of the Exeter Hip Unit, Princess Elizabeth Orthopaedic Hospital