title: Mid-term clinical and radiographic outcomes of porous tantalum modular acetabular components for hip dysplasia.
abstract: It is still challenging to perform successful cementless cup fixation during total hip arthroplasty for hip dysplasia. In this multicenter study we evaluated the clinical results of porous tantalum modular acetabular cups (TM cups) in 45 dysplastic hips with a mean follow-up period of 9.8 years. The mean Japanese Orthopaedic Association hip score improved from 48.2 preoperatively to 92.1 at the most recent follow-up. All of the cups were radiographically stable with no evidence of progressive radiolucencies or osteolysis regardless of bone grafting. Sixteen hips with bone grafts showed the integration of grafted bone without any radiolucencies. There were no revisions of TM cups. The use of TM cups for dysplastic hips provided satisfactory 10-year clinical and radiographic results.
authors.affiliation: Department of Bone and Joint Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan.
authors.forename: Tomomi
authors.initials: T
authors.lastname: Kamada
authors.affiliation: Department of Bone and Joint Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan.
authors.forename: Naohiko
authors.initials: N
authors.lastname: Mashima
authors.affiliation: Department of Orthopaedic Surgery, Kyushu University School of Medicine, 1-3-3 Maidashi, Higashi-ku, Fukuoka, Japan.
authors.forename: Yasuharu
authors.initials: Y
authors.lastname: Nakashima
authors.affiliation: Department of Bone and Joint Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Imai
authors.affiliation: Department of Bone and Joint Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan.
authors.forename: Jun
authors.initials: J
authors.lastname: Takeba
authors.affiliation: Department of Bone and Joint Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan.
authors.forename: Hiromasa
authors.initials: H
authors.lastname: Miura
mesh_terms: D000077:Acetabulum / Q000601:surgery*; D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D016025:Bone Transplantation; D005260:Female; D005500:Follow-Up Studies; D006617:Hip Dislocation / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D016062:Porosity; D011474:Prosthesis Design; D011475:Prosthesis Failure; D013635:Tantalum
chemical_list: D013635:Tantalum
keywords: bone ingrowth; cementless; developmental dysplasia of the hip; total hip arthroplasty; trabecular metal cup of modular type