Fifteen- to 20-year results of uncemented tapered fully porous-coated cobalt-chrome stems.
In this paper, we evaluated the long-term results of uncemented total hip arthroplasties using tapered fully porous-coated cobalt-chrome stems (Autophor 900S). The average follow-up was 206 months in 127 hips (113 patients). The articulations of the joints were ceramic-on-polyethylene in 43 hips and ceramic-on-ceramic in 84. The survival rate of the stems at 17 years was 94.5%. A stable stem with bony ingrowth was identified in all 120 hips, excluding femoral revision cases (seven hips). The causes of the seven femoral revisions were aseptic loosening in four, infection in two, and stem fracture in one. No surgical intervention was performed for osteolysis or stress shielding. The Autophor 900S tapered fully porous-coated cobalt-chrome femoral stem revealed encouraging radiographic long-term stability.
Yoon
Taek Rim
TR
Center for Joint Disease, Chonnam National University Hwasun Hospital, 160, Ilsim Ri, Hwsun Eup, Hwasun Gun, Jeonnam, Gwang Ju 519-809, South Korea. tryoon@chonnam.ac.kr
Rowe
Sung-Man
SM
Kim
Myung-Sun
MS
Cho
Sang-Gwon
SG
Seon
Jong-Keun
JK
D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation / Q000379:methods*; D001843:Bone Cements; D002858:Chromium Alloys; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging / Q000601:surgery; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012189:Retrospective Studies; D016896:Treatment Outcome
D001843:Bone Cements; D002858:Chromium Alloys