Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Arthroplasty - Hip
Abstract number: 24586
EARLY RESULTS OF METAL ON METAL REVISION HIP ARTHROPLASTY
Inder GILL, Murali KRISHNAN, Mike REED, Paul PARTINGTON
Wansbeck General Hospital, Newcastle Upon Tyne (UNITED KINGDOM)
Aim: To report the results of Revision hip arthroplasty using large diameter, metal on
metal bearing implants- minimum 2 year follow up. Methods: Single centre
retrospective study of 22 consecutive patients who underwent acetabular revision
using metal on metal bearing implants. Birmingham hip resurfacing (BHR) cup was
used in all patients uncemented in 16 cases and cemented within reinforcement or
reconstruction ring in 6 cases.Femoral revisions were carried out as necessary.
Results: There were 16 men and 6 women with a mean age of 71 years (51-83).
Revision was performed for aseptic loosening in 10, infected hip arthroplasty in 9,
and Peri-prosthetic fracture with loosening in 3 patients. 2-stage revision was
performed for all infected hips. One patient died and the remaining 21 patients had
clinical and radiological assessment at a mean 35 months (24-60). The mean Harris
hip score was 75(23-98) with 50% good to excellent results. 1 patient had further
revision in 2 stages for recurrent infection at 24 months. There were 2 recurrent
infections (both revised for septic loosening) and 1 non-union of trochanteric
osteotomy. There were no dislocations in the group. No radiological loosening of
implants or metal ion complications seen at last follow up. Conclusions: We believe
this is the first reported series on the use of large diameter metal on metal bearing
surfaces for revision hip arthroplasty. This shows satisfactory short to medium term
results with no component loosenings, despite monoblock cups and no dislocations.
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