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Medial tibial plateau morphology and stress fracture location: A magnetic resonance imaging study
Kiminori Yukata1, Issei Yamanaka1, Yuzuru Ueda1
1Kiminori Yukata, Issei Yamanaka, Yuzuru Ueda, Sho Nakai, Yosuke Oishi, Jun-ichi Hamawaki, Department of Orthopedics, Hamawaki Orthopaedic Hospital, Hiroshima 730-0051, Japan.
Aim:
To determine the location of medial tibial plateau stress fractures and its relationship with tibial plateau morphology using magnetic resonance imaging (MRI).
Methods:
A retrospective review of patients with a diagnosis of stress fracture of the medial tibial plateau was performed for a 5-year period. Fourteen patients [three female and 11 male, with an average age of 36.4 years (range, 15-50 years)], who underwent knee MRI, were included. The appearance of the tibial plateau stress fracture and the geometry of the tibial plateau were reviewed and measured on MRI.
Results:
Thirteen of 14 stress fractures were linear, and one of them stellated on MRI images. The location of fractures was classified into three types. Three fractures were located anteromedially (AM type), six posteromedially (PM type), and five posteriorly (P type) at the medial tibial plateau. In addition, tibial posterior slope at the medial tibial plateau tended to be larger when the fracture was located more posteriorly on MRI.
Conclusion:
We found that MRI showed three different localizations of medial tibial plateau stress fractures, which were associated with tibial posterior slope at the medial tibial plateau.
