Relationship between lower limb torsion and coronal morphologies of the femur and tibia in patients with medial knee osteoarthritis

Autor: Shuntaro Nejima, Yasushi Akamatsu, Hideo Kobayashi, Masaki Tsuji, Shota Mitsuhashi, Takahiro Sasaki, Ken Kumagai, Yutaka Inaba
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: BMC Musculoskeletal Disorders, Vol 21, Iss 1, Pp 1-7 (2020)
Druh dokumentu: article
ISSN: 1471-2474
DOI: 10.1186/s12891-020-03286-2
Popis: Abstract Background To investigate the relationship between femoral or tibial torsion and hip-knee-ankle angle (HKA), mechanical lateral distal femoral angle (mLDFA), or mechanical medial proximal tibial angle (mMPTA) in patients with medial knee osteoarthritis (OA). Methods A total of 75 knees were enrolled. Femoral and tibial torsions were measured by superimposing the axial planes of computed tomography images. The relationship between femoral or tibial torsion and HKA, mLDFA, or mMPTA on radiographs was examined. Results The mean femoral torsion was 12.2 ± 8.5° internally; femoral internal and external torsions were observed in 70 and 5 knees, respectively. The mean tibial external torsion was 18.0 ± 7.4° externally; tibial external torsion was observed in all 75 knees. Femoral internal and tibial external torsions increased with lower mMPTA (r = 0.33, P = 0.003; r = − 0.32, P = 0.005, respectively) but were not related to HKA or mLDFA. Conclusion Femoral and tibial torsions were correlated with varus inclination of the proximal tibia in patients with medial knee OA.
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