title: Changes in knee alignment after total knee arthroplasty.
abstract: Changes in limb alignment after total knee arthroplasty were evaluated in 20 knees replaced with the Miller Galante knee system. The mean follow-up period was 87.4 months. Seventeen of the 20 knees were in the varus position on the initial postoperative radiographs, but the alignment significantly changed to become even more aligned toward varus during the follow-up period. The thickness of the ultra-high-molecular-weight polyethylene (UHMWPE) also decreased significantly in the medial femorotibial joint. The wear of the UHMWPE possibly changed the alignment, and the postoperative alignment had a positive correlation with the wear rate. The components should be implanted so that the mechanical axis intersects the center of the components to prevent worsening of alignment as well as to minimize any such wear.
authors.affiliation: Department of Orthopaedic Surgery, Faculty of Medicine, Kyushu University, Fukuoka City, Fukuoka, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Matsuda
authors.forename: H
authors.initials: H
authors.lastname: Miura
authors.forename: R
authors.initials: R
authors.lastname: Nagamine
authors.forename: K
authors.initials: K
authors.lastname: Urabe
authors.forename: K
authors.initials: K
authors.lastname: Harimaya
authors.forename: T
authors.initials: T
authors.lastname: Matsunobu
authors.forename: Y
authors.initials: Y
authors.lastname: Iwamoto
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000601:surgery*; D011095:Polyethylenes; D011184:Postoperative Period
chemical_list: D011095:Polyethylenes; C111601:ultra-high molecular weight polyethylene