Reconstruction of the severely deficient acetabulum with the bipolar prosthesis and allo-autograft.
We reviewed the clinical results and radiographs of four patients who had revision of the acetabular component of a failed total hip arthroplasty with a bipolar socket supplemented by autoallograft to reconstruct massive bony defect. These patients were followed up from twelve to seventeen months. The clinical score was assessed by a modified d'Aubigne's rating score that assigned a maximum of 18 points. The preoperative clinical score ranged from 1 to 5 points (mean: 3.25 points). The postoperative score improved to a range of 13-17 points (mean: 15.25 points). Of the hips examined, nearly all were pain-free. The largest possible bipolar cup was used with solid structural allografting augmented by morseled cancellous autograft. These have been uniformly trouble-free with acetabular reconstitution. Cup migration was minimal or none. The follow-up periods were short and some migration is probably to be anticipated in the future. Although this technique was originally conceived as part of a staged procedure, it seemed as a definitive procedure yielding acceptable results for dealing with a severely deficient acetabulum. Larger series and longer periods of follow-up are demanded to support this assertion.
Chang
J K
JK
Department of Orthopaedic Surgery, Kaohsiung Medical College, Taiwan, Republic of China.
Wu
H S
HS
Hsu
J C
JC
Yei
S M
SM
Lin
S Y
SY
D000077:Acetabulum / Q000473:pathology / Q000601:surgery*; D000368:Aged; D016025:Bone Transplantation / Q000379:methods; D005260:Female; D005270:Femur Head; D006622:Hip Prosthesis; D006801:Humans; D007085:Ilium; D008297:Male; D008875:Middle Aged; D012086:Reoperation; D014182:Transplantation, Autologous; D014184:Transplantation, Homologous