title: Osseointegration of Fitmore stem in total hip arthroplasty.
abstract: Currently, an increasing number of younger patients undergo total hip arthroplasty surgery. This has led to a minimal invasive approach and the use of short, bone preserving, femoral stems. In this study, we sought to evaluate osseointegration of the Fitmore stem (Zimmer, Inc; Warsaw, IN) during the first 12 mo after surgery, which reflects the biological phenomenon of osseointegration with radiographic evaluation and bone densitometry (dual-energy X-ray absorptiometry). We evaluated 33 patients (mean age 62.3) using dual-energy X-ray absorptiometry scan around the stem and X-ray. Moreover, we studied functional recovery using the Harris Hip Score, timed up and go test, and a quality of life form (SF-36), during the follow-up period. At 12 mo, we observed an increased periprosthetic bone mineral density in region of interest 1 (1.7%) and region of interest 7 (8.3%), where there is usually a greater amount of bone resorption. Also Harris Hip Score, timed up and go test, and SF-36 showed an improvement of clinical conditions of all patients. We also used a control group with a standard stem implanted. Because this is the first study correlating osseointegration and clinical outcome of the Fitmore stem, further clinical studies will be necessary to confirm good/positive results and a long stable fixation.
authors.affiliation: Department of Orthopedics and Traumatology, "Tor Vergata" University of Rome, "Policlinico Tor Vergata" Foundation, Rome, Italy.
authors.forename: Elena
authors.initials: E
authors.lastname: Gasbarra
authors.affiliation: Department of Orthopedics and Traumatology, "Tor Vergata" University of Rome, "Policlinico Tor Vergata" Foundation, Rome, Italy.
authors.forename: Monica
authors.initials: M
authors.lastname: Celi
authors.affiliation: Department of Orthopedics and Traumatology, "Tor Vergata" University of Rome, "Policlinico Tor Vergata" Foundation, Rome, Italy.
authors.forename: Fabio L
authors.initials: FL
authors.lastname: Perrone
authors.affiliation: Department of Orthopedics and Traumatology, "Tor Vergata" University of Rome, "Policlinico Tor Vergata" Foundation, Rome, Italy.
authors.forename: Riccardo
authors.initials: R
authors.lastname: Iundusi
authors.affiliation: Department of Radiology, The University of Ottawa, Ottawa, Ontario, Canada.
authors.forename: Luigia
authors.initials: L
authors.lastname: Di Primio
authors.affiliation: Department of Radiology, University of Foggia, Foggia, Italy and Department of Radiology, Scientific Institute Hospital "Casa Sollievo della Sofferenza," San Giovanni Rotondo, Foggia, Italy. Electronic address: guglielmi_g@hotmail.com.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Guglielmi
authors.affiliation: Department of Orthopedics and Traumatology, "Tor Vergata" University of Rome, "Policlinico Tor Vergata" Foundation, Rome, Italy.
authors.forename: Umberto
authors.initials: U
authors.lastname: Tarantino
mesh_terms: D015502:Absorptiometry, Photon; D019644:Arthroplasty, Replacement, Hip; D005260:Female; D006305:Health Status Indicators; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D016348:Osseointegration; D015207:Osteoarthritis, Hip / Q000601:surgery; D011474:Prosthesis Design
keywords: Bone preserving; DXA; Fitmore; THA; osteointegration