Bone impaction grafting and a cemented cup after acetabular fracture at 3-18 years.

UNLABELLED: The outcome of total hip arthroplasty after acetabular fracture is compromised. We studied if the bone impaction grafting technique could provide long-term prosthesis survival in deformed and irregular acetabula. We studied 20 hips in 20 patients (mean age, 53.3 years; range, 35-75 years) that were reconstructed with acetabular bone impaction grafting and a cemented total hip prosthesis after acetabular fracture. No patient was lost to followup. At review the mean followup was 9.5 years (range, 3-18 years) and the average Harris hip score was 93 (range, 62-100). During followup there were two cup revisions: one after 14.5 years for septic loosening, and one after 15.3 years for aseptic loosening. The Kaplan-Meier survival rate of the cup with end-point revision for any reason was 100% at 10 years and 80% (95% CI; range, 62-98%) after 15 years. With end-point cup revision for aseptic loosening the survival rate was 100% at 10 years. Acetabular bone impaction grafting with a cemented cup is a biologically attractive technique with good long-term survival used to reconstruct bone stock loss after posttraumatic arthritis. The complication and reoperation rate was low in this relatively young group of patients. LEVEL OF EVIDENCE: Therapeutic study, Level IV (Case series--no, or historical control group). See the Guidelines for Authors for a complete description of levels of evidence.