Mechanical medial proximal tibial angle
Mechanical medial proximal tibial angle
定义
机械内侧胫骨近端角是用于评估胫骨成角畸形并为矫正提供指导的一项测量指标。该角度由胫骨的颅尾位或尾颅位X线片，或胫骨多平面重建CT图像确定。
X线评估时，投照视野应包含胫骨全长、膝关节及跗关节。胫骨与X线束垂直，X线束以胫骨骨干中点为中心。若满足以下条件，则认为摆位满意：
机械内侧胫骨近端角是在额状面上，胫骨机械轴与胫骨近端关节定向线在胫骨内侧所成的角。
以下为已发表的机械内侧胫骨近端角相关数据：
小型犬：95.1 +/- 3.2°（X线摄影）（Olimpo et al. 2016）
小型犬：90°（78–108）（X线摄影）（Garnoeva et al. 2018）
吉娃娃：94.0 +/- 1.0°（X线摄影颅尾位）；99.1 +/- 2.2（X线摄影尾颅位）（Phetkaew et al. 2018）
英国斗牛犬：91.98 +/- 4.28°（CT）（Lusetti et al. 2017）
吉娃娃：96.3 +/- 4.1°（CT）（Phetkaew et al. 2018）
參考資料
Garnoeva, R, Roydev, R, Paskalev, M et al. Radiographic measures of pelvic limb malalignment in small breed dogs with various grades of medial patellar luxation. Comp Clin Pathol 2018;27, 1551–1555. doi.org/10.1007/s00580-018-2772-8
Lusetti F, Bonardi A, Eid C, Brandstetter de Belesini A, Martini FM. Pelvic limb alignment measured by computed tomography in purebred English Bulldogs with medial patellar luxation. Vet Comp Orthop Traumatol. 2017 May 10;30(3):200-208. doi: 10.3415/VCOT-16-07-0116. Epub 2017 May 5.
Olimpo M, Piras LA, Peirone B. Pelvic limb alignment in small breed dogs: a comparison between affected and free subjects from medial patellar luxation. Vet Ital. 2016 Jan-Mar;52(1):45-50. doi: 10.12834/VetIt.71.206.3.
Phetkaew T, Kalpravidh M, Penchome R, Wangdee C. A Comparison of Angular Values of the Pelvic Limb with Normal and Medial Patellar Luxation Stifles in Chihuahua Dogs Using Radiography and Computed Tomography. Vet Comp Orthop Traumatol. 2018 Feb;31(2):114-123. doi: 10.3415/VCOT-17-05-0067. Epub 2018 Mar 13. Erratum in: Vet Comp Orthop Traumatol. 2018 Feb;31(2):a1.
