title: Two-year migration results of the ReCap hip resurfacing system-a radiostereometric follow-up study of 23 hips.
abstract: There has been renewed interest for metal-on-metal hip resurfacing due to improved design and manufacturing of implants, better materials, and enhanced implant fixation. In contrast to conventional total hip replacements, only a few clinical hip resurfacing trials using radiostereometry (RSA) have been reported, and solely for the Birmingham hip resurfacing arthroplasty. The purpose of this RSA trial was to describe the migration pattern of a new hip resurfacing system (ReCap) within the first two years after primary surgery. Twenty-six patients underwent total hip replacement. The patients were followed-up for up to 24 months and were evaluated with the use of radiostereometric measurements. The prosthesis showed mean translations and rotation close to zero. Maximum translation was seen along the transverse axis in the medial direction (0.13 mm). No statistically significant translation or rotation was seen at two-years follow-up, (t-test, p <0.05, translation or rotation).
authors.affiliation: Department of Orthopaedic Surgery, Aarhus University Hospital, Aarhus C, Denmark. baadhansen@dadlnet.dk
authors.forename: Thomas
authors.initials: T
authors.lastname: Baad-Hansen
authors.forename: Stig
authors.initials: S
authors.lastname: Storgaard Jakobsen
authors.forename: Kjeld
authors.initials: K
authors.lastname: Soballe
mesh_terms: D019644:Arthroplasty, Replacement, Hip; D005260:Female; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000503:physiopathology / Q000601:surgery; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation; D013635:Tantalum; D016896:Treatment Outcome
chemical_list: D013635:Tantalum