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The Journal of Bone & Joint Surgery British Volume
Vol. 89-B, Issue 9 | Pages 1270 - 1271
1 Sep 2007
DERBYSHIRE B PORTER ML


The Journal of Bone & Joint Surgery British Volume
Vol. 89-B, Issue 6 | Pages 730 - 735
1 Jun 2007
Derbyshire B Porter ML

We performed a three-year radiostereometric analysis (RSA) study of the Elite Plus femoral component on 25 patients undergoing primary total hip replacement. Additional assessments and measurements from standard radiographs were also made.

Subsidence of the stem occurred at the cement-stem interface. At 36 months the subsidence of the stem centroid was a mean of 0.30 mm (0.02 to 1.28), and was continuing at a slow rate. At the same time point, internal rotation and posterior migration of the femoral head had ceased. One stem migrated excessively and additional assessments suggested that this was probably due to high patient demand.

The failure rate of 4% in our study is consistent with data from arthroplasty registers but contrasts with poor results from another RSA study, and from some clinical studies. We believe that the surgical technique, particularly the use of high-viscosity cement, may have been an important factor contributing to our results.


The Journal of Bone & Joint Surgery British Volume
Vol. 88-B, Issue 12 | Pages 1676 - 1676
1 Dec 2006
DERBYSHIRE B PORTER ML


The Journal of Bone & Joint Surgery British Volume
Vol. 88-B, Issue 7 | Pages 976 - 976
1 Jul 2006
DERBYSHIRE B PORTER ML