title: Scintigraphic evaluation of impaction grafting for total hip arthroplasty revision.
abstract: To determine the fate of an impacted allograft after a minimum follow-up of 1 year, we examined 9 of 40 patients who underwent revision arthroplasty with the impaction grafting technique. The allograft used in this study was morselized cancellous freeze-dried allograft. We examined these 9 patients with technetium-99 m methylene diphosphonate bone scintigraphy at an average of 14 (range 12-20) months after surgery. All of them had a good clinical outcome, with an average postoperative Hip Society Score of 89 (range 65-98) and no evidence of radiolucency or subsidence on direct radiography. Scintigraphic examination demonstrated that the area corresponding to the allograft had a remarkable radioactivity accumulation suggesting new bone formation. The allograft in total hip revision using the impaction grafting technique undergoes a significant neovascularization and new bone formation. This study suggests than when vigorous impaction is used, freeze-dried cancellous allograft can be used for impaction grafting.
authors.affiliation: Department of Orthopaedics and Traumatology, Hacettepe University Faculty of Medicine, Ankara, Turkey.
authors.forename: A
authors.initials: A
authors.lastname: Mazhar Tokgözoğlu
authors.forename: M
authors.initials: M
authors.lastname: Aydin
authors.forename: B
authors.initials: B
authors.lastname: Atilla
authors.forename: B
authors.initials: B
authors.lastname: Caner
mesh_terms: D019644:Arthroplasty, Replacement, Hip; D001861:Bone Regeneration / Q000502:physiology; D016723:Bone Remodeling / Q000502:physiology; D016025:Bone Transplantation; D005500:Follow-Up Studies; D006801:Humans; D011183:Postoperative Complications / Q000000981:diagnostic imaging* / Q000601:surgery; D011475:Prosthesis Failure; D012086:Reoperation; D013669:Technetium Tc 99m Medronate; D015899:Tomography, Emission-Computed, Single-Photon
chemical_list: D013669:Technetium Tc 99m Medronate