Abstract
Complex acetabular defects after failed total hip arthroplasty (THA) remain a major challenge in revision surgery. We managed 29 patients, of whom 27 had type-III and two type-IV defects (AAOS classification). The mean age of the 16 men and 13 women was 68 years (22 to 96).
Use of a modular uncemented acetabular revision system allowed us accurately to position the construct, and then optimise the orientation of the polyethylene liner in respect of stability in the reduced hip. The modularity of the system allowed good access to do an impaction bone graft to restore the defects in the bone stock. Our follow-up ranged from 2 to 25 months. The orientation of the acetabular construct was measured radiologically and was at 50°. Our complications included four dislocations, two transient nerve palsies, one deep infection, four deep vein thromboses and one death from pulmonary embolism. We conclude that the use of a modular acetabular reconstruction system is promising in these extremely difficult cases.
The abstracts were prepared by Professor M.B.E. Sweet. Correspondence should be addressed to him at PO Box 47363, Parklands, Johannesburg 2121, South Africa.
