title: THA revision with extensively porous-coated stems. 32 hips followed 2-6.5 years.
abstract: Since 1991, we have used 32 extensively porous-coated femoral stems with cylindrical distal cross-section for revision of failed cemented stems. At an average follow-up of 4 years, one stem had been re-revised due to a periprosthetic femoral fracture, but no aseptic loosening has been observed. The average postoperative Harris Hip Score was 84 points. Radiographically, 23 stems were well fixed with bone-ingrowth, which was mostly observed in the distal portion of the porous coating. Increased thickness and density of the thin cortical wall was also seen. Mild stress shielding was present in 4 cases, but was not progressive and gave no symptoms. An extensively porous-coated stem, with a cylindrical distal cross-section, seems to be a reasonable choice in femoral revision.
authors.affiliation: Department of Orthopedics, Inuyama Chuo Hospital, Aichi, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Sugimura
authors.forename: A
authors.initials: A
authors.lastname: Tohkura
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008875:Middle Aged; D016348:Osseointegration; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation