Yukata Kiminori, Yamanaka Issei, Ueda Yuzuru, Nakai Sho, Ogasa Hiroyoshi, Oishi Yosuke, Hamawaki Jun-Ichi
Kiminori Yukata, Issei Yamanaka, Yuzuru Ueda, Sho Nakai, Yosuke Oishi, Jun-ichi Hamawaki, Department of Orthopedics, Hamawaki Orthopaedic Hospital, Hiroshima 730-0051, Japan.
World J Orthop. 2017 Jun 18;8(6):484-490. doi: 10.5312/wjo.v8.i6.484.
To determine the location of medial tibial plateau stress fractures and its relationship with tibial plateau morphology using magnetic resonance imaging (MRI).
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.
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.
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.
利用磁共振成像（MRI）确定胫骨内侧平台应力性骨折的位置及其与胫骨平台形态的关系。
对诊断为胫骨内侧平台应力性骨折的患者进行为期5年的回顾性研究。纳入14例接受膝关节MRI检查的患者[3例女性和11例男性，平均年龄36.4岁（范围15 - 50岁）]。在MRI上观察并测量胫骨平台应力性骨折的表现及胫骨平台的几何形态。
14例应力性骨折中13例为线性骨折，1例在MRI图像上呈星芒状。骨折位置分为三种类型。3例骨折位于胫骨内侧平台前内侧（AM型），6例位于后内侧（PM型），5例位于后方（P型）。此外，当骨折在MRI上位置越靠后时，胫骨内侧平台的胫骨后倾坡度往往越大。
我们发现MRI显示胫骨内侧平台应力性骨折有三种不同的定位，且与胫骨内侧平台的胫骨后倾坡度有关。
