title: Clinical and radiological outcome of the treatment of osteonecrosis of the femoral head using the osteonecrosis intervention implant.
abstract: The aim of this study was to evaluate the clinical and radiological outcome of the treatment of osteonecrosis of the femoral head by implantation of an osteonecrosis intervention rod. In this retrospective study the follow-up of 19 patients with 23 osteonecrotic femoral heads treated with implantation of an osteonecrosis intervention implant was assessed. From 19 patients with 23 necrotic femoral heads, there were 13 cases in which a total hip replacement was necessary. This implies a survival rate of 44% after implantation of an osteonecrosis intervention rod after a mean follow-up of 1.45 years. The outcome after core decompression combined with the insertion of a tantalum osteonecrosis intervention implant did not show superior results compared to core decompression alone. This is in contrast to existing studies. In addition, this study showed that in cases of total hip replacement, no problems appeared during explantation of the tantalum rod.
authors.affiliation: Department of Orthopaedic Surgery, Hannover Medical School, Hannover, Germany. Thilo.floerkemeier@annastift.de
authors.forename: Thilo
authors.initials: T
authors.lastname: Floerkemeier
authors.forename: Fritz
authors.initials: F
authors.lastname: Thorey
authors.forename: Dorothea
authors.initials: D
authors.lastname: Daentzer
authors.forename: Matthias
authors.initials: M
authors.lastname: Lerch
authors.forename: Phillip
authors.initials: P
authors.lastname: Klages
authors.forename: Henning
authors.initials: H
authors.lastname: Windhagen
authors.forename: Gabriela
authors.initials: G
authors.lastname: von Lewinski
mesh_terms: D000293:Adolescent; D000328:Adult; D001178:Arthroplasty / Q000295:instrumentation / Q000379:methods; D019644:Arthroplasty, Replacement, Hip; D005260:Female; D005271:Femur Head Necrosis / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery*; D006304:Health Status; D006621:Hip Joint / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D016268:Internal Fixators; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D011475:Prosthesis Failure; D019919:Prosthesis Implantation; D011859:Radiography; D016059:Range of Motion, Articular; D012086:Reoperation; D012189:Retrospective Studies; D013635:Tantalum; D055815:Young Adult
chemical_list: D013635:Tantalum