Acetabular revision with impacted freeze-dried cancellous bone chips and a cemented cup: a report of 7 cases at 5 to 9 years' follow-up.
The long-term results of bone impaction grafting with fresh-frozen femoral head allografts and a cemented cup are favorable. Because of intermittent shortage of fresh-frozen femoral heads at our local bone bank, we used processed freeze-dried bone in 7 acetabular revisions operated between 1989 and 1994. All 7 consecutive patients were followed annually. At final review (March 2000), 1 patient had died after 8.5 years of follow-up of a cause not related to the surgery. In 1 hip, a rerevision was performed for septic loosening 5 years after the previous septic loosening. Radiographically the freeze-dried allografts seemed to incorporate in all cases but the reinfected one; progressive radiolucent lines were not seen, although 1 case had a stable line in 1 zone. The overall survival rate for the 7 acetabular reconstructions at an average follow-up of 7 years (range, 5-9 years) was 86%. At midterm follow-up, there was no aseptic loosening. In this limited case report, the results at midterm for freeze-dried allograft bone chips in acetabular reconstructions are acceptable.
Thien
T M
TM
Department of Orthopaedics, University Medical Centre Nijmegen, Postbox 9101, 6500 HB Nijmegen, the Netherlands.
Welten
M L
ML
Verdonschot
N
N
Buma
P
P
Yong
P
P
Schreurs
B W
BW
D000077:Acetabulum / Q000601:surgery*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D016025:Bone Transplantation / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D005612:Freeze Drying; D006615:Hip / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation; D014184:Transplantation, Homologous; D016896:Treatment Outcome