title: Intramedullary step-cut osteotomy for revision total hip arthroplasty with allograft-host bone size mismatch.
abstract: Eleven revision total hip arthroplasties were treated with proximal segmental femoral allograft reconstruction in which the diameter of the distal host bone was larger than the largest long-stem femoral component which could fit into the segmental allograft. A long, lateral step-cut osteotomy of the allograft was used with placement of the lateral cortical allograft inside the distal host bone. All allograft-host bone junctions healed. The average time to union was 6.7 months. The long step-cut osteotomy provides stability of the allograft-host bone junction when the diameter of the host bone is larger than the allograft. The osteotomy also provides a large surface area of contact between the allograft and host bone.
authors: Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California, USA.
authors: Chad E
authors: CE
authors: Maclachlan
authors: Michael D
authors: MD
authors: Ries
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip; D016025:Bone Transplantation; D005260:Female; D005269:Femur / Q000637:transplantation*; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D010027:Osteotomy / Q000379:methods*; D011183:Postoperative Complications; D011474:Prosthesis Design; D012086:Reoperation; D014184:Transplantation, Homologous; D016896:Treatment Outcome