title: A modified S-ROM stem in primary total hip arthroplasty for developmental dysplasia of the hip.
abstract: This study examined the clinical outcome of 220 hips in 196 Asian patients who underwent primary total hip arthroplasty (THA) for treatment of developmental dysplasia of the hip (DDH) using a modified S-ROM modular (S-ROM-A) stem designed for Asians, after 2-5 years (mean, 3.3 years) of follow-up. The stem was placed so that the anteversion angle of the neck was decreased against the sleeve in 56% of the hips and increased in 18% of the hips. Bone ingrown fixation was achieved in 99.5% of the hips on X-ray at final follow-up. There were 2 (0.9%) dislocations postoperatively. In primary THA for treatment of DDH accompanied by femoral rotational deformity, the freely-rotatable modular stem provided favorable short-term outcomes by affording both morphological and functional advantages.
authors.affiliation: Department of Orthopaedic Surgery, The Jikei University School of Medicine, Tokyo, Japan.
authors.forename: Hideaki
authors.initials: H
authors.lastname: Tamegai
authors.forename: Takuya
authors.initials: T
authors.lastname: Otani
authors.forename: Hideki
authors.initials: H
authors.lastname: Fujii
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Kawaguchi
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Hayama
authors.forename: Keishi
authors.initials: K
authors.lastname: Marumo
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip; D005260:Female; D005269:Femur / Q000601:surgery; D006618:Hip Dislocation, Congenital / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D016896:Treatment Outcome
keywords: Asian patients; S-ROM-A; developmental dysplasia of the hip; modular femoral stem; primary total hip arthroplasty