title: Porous tantalum tibial component prevents periprosthetic loss of bone mineral density after total knee arthroplasty for five years-a matched cohort study.
abstract: In 21 knees receiving porous tantalum tibial component and 21 knees receiving a cemented cobalt-chromium tibial component, dual x-ray absorptiometry scans were performed for five years post-operatively. The postoperative decrease in the bone mineral density in the lateral aspect of the tibia was significantly less in knees with porous tantalum tibial components (11.6%) than in knees with cemented cobalt-chromium tibial components (29.6%) at five years (p < 0.05). No prosthetic migration or periprosthetic fracture was detected in either group. The present study is one of the studies with the longest follow-up period on bone mineral density after total knee arthroplasty. Porous tantalum tibial component has a favorable effect on the bone mineral density of the proximal tibia after total knee arthroplasty up to five years.
authors: Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.
authors: Yukihide
authors: Y
authors: Minoda
authors: Akio
authors: A
authors: Kobayashi
authors: Mitsuhiko
authors: M
authors: Ikebuchi
authors: Hiroyoshi
authors: H
authors: Iwaki
authors: Fumiaki
authors: F
authors: Inori
authors: Hiroaki
authors: H
authors: Nakamura
mesh_terms: D015502:Absorptiometry, Photon; D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects*; D001672:Biocompatible Materials; D015519:Bone Density; D001862:Bone Resorption / Q000000981:diagnostic imaging* / Q000209:etiology; D002858:Chromium Alloys; D015331:Cohort Studies; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery; D007720:Knee Prosthesis / Q000009:adverse effects*; D008297:Male; D020370:Osteoarthritis, Knee / Q000601:surgery*; D013314:Stress, Mechanical; D013635:Tantalum; D013977:Tibia / Q000000981:diagnostic imaging* / Q000503:physiopathology
chemical_list: D001672:Biocompatible Materials; D002858:Chromium Alloys; D013635:Tantalum
keywords: bone mineral density; porous tantalum tibial component; total knee prosthesis