1. Medialization of the mechanical axis of the tibia is related to lateralization of the tibial tuberosity in knee osteoarthritis
- Author
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Ken Kumagai, Masaichi Sotozawa, Kensuke Hisatomi, Hiroshi Fujimaki, Hideo Kobayashi, Yutaka Inaba, Shunsuke Yamada, and Shuntaro Nejima
- Subjects
musculoskeletal diseases ,Adult ,Knee Joint ,Radiography ,Tibial tuberosity ,Osteoarthritis ,Lateralization of brain function ,Cruciate ligament ,03 medical and health sciences ,0302 clinical medicine ,Medicine ,Humans ,Orthopedics and Sports Medicine ,Tibia ,Aged ,Varus deformity ,Orthodontics ,030222 orthopedics ,business.industry ,030229 sport sciences ,Middle Aged ,Osteoarthritis, Knee ,medicine.disease ,equipment and supplies ,musculoskeletal system ,Osteotomy ,body regions ,medicine.anatomical_structure ,surgical procedures, operative ,Coronal plane ,Female ,Posterior Cruciate Ligament ,business ,Tomography, X-Ray Computed - Abstract
To determine whether medialization of the proximal tibia due to a varus deformity is related to lateralization of the tibial tuberosity in varus knee osteoarthritis (OA)., A total of 120 knees that underwent osteotomies around the knee for varus knee OA were enrolled. Mechanical medial proximal tibial angle (mMPTA) was measured on radiographs. The angle between the mechanical and anatomical axes of the tibia (angle MA) and the distance between the centre of the tibial plateau and the anatomical axis (distance MA) were measured in the coronal plane on computed tomography images. The tibial tuberosity-posterior cruciate ligament (TT-PCL) distance, the distance between the midpoint of the tibial tuberosity and the centre of the tibial plateau (TT-centre distance), and the angle between the line through the midpoint of the tibial tuberosity and the centre of the tibial plateau and the anteroposterior axis (TT-centre angle) were measured in the axial plane. The correlations of these parameters were evaluated., mMPTA correlated negatively with angle MA (r=-0.37, P, Medialization of the proximal tibia due to a varus deformity may induce lateralization of the tibial tuberosity.
- Published
- 2021