title: Morphology of the Proximal Tibia at Different Levels of Bone Resection in Japanese Knees.
abstract: The purpose was to measure the morphology of the proximal tibia at different levels for consideration of tibial tray design and placement. The morphology was analysed in 51 knees at 10, 15, 20, and 25 mm below the centre of the lateral tibial plateau. Surface rotation was measured by fitting an ellipse on the resection surface. The anteroposterior (AP), mediolateral (ML), medial AP (MAP) and lateral AP (LAP) dimensions were also measured. The resection surface showed internal rotation of 22.9° from the 10 mm level to the 25 mm level. More distally, the ML/AP and MAP/LAP ratios showed significant changes. Surgeons should pay attention to morphological changes for patients with gross tibial bone defects in primary and revision total knee arthroplasty.
authors.affiliation: Department of Orthopedic Surgery, Kyoto University, Graduate School of Medicine, Kyoto, Japan.
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Nakamura
authors.affiliation: Department of Orthopedic Surgery, Kyoto University, Graduate School of Medicine, Kyoto, Japan.
authors.forename: Yugo
authors.initials: Y
authors.lastname: Morita
authors.affiliation: Department of Orthopedic Surgery, Kyoto University, Graduate School of Medicine, Kyoto, Japan.
authors.forename: Hiromu
authors.initials: H
authors.lastname: Ito
authors.affiliation: Department of Orthopedic Surgery, Kyoto University, Graduate School of Medicine, Kyoto, Japan.
authors.forename: Shinichi
authors.initials: S
authors.lastname: Kuriyama
authors.affiliation: Department of Orthopedic Surgery, Kyoto University, Graduate School of Medicine, Kyoto, Japan.
authors.forename: Moritoshi
authors.initials: M
authors.lastname: Furu
authors.affiliation: Department of Orthopedic Surgery, Kyoto University, Graduate School of Medicine, Kyoto, Japan.
authors.forename: Shuichi
authors.initials: S
authors.lastname: Matsuda
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D044466:Asian People; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000473:pathology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000208:ethnology / Q000473:pathology / Q000601:surgery*; D012086:Reoperation; D012399:Rotation; D013977:Tibia / Q000473:pathology / Q000601:surgery*
keywords: computed tomography; morphology; proximal tibia; revision total knee arthroplasty; rotational alignment