Morphological classification of the femoral trochlear groove based on a quantitative measurement of computed tomographic models
Morphological classification of the femoral trochlear groove based on a quantitative measurement of computed tomographic models
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DOI：
10.1007/s00167-016-4236-5
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发表时间：
2017-10-01
影响因子：
3.8
通讯作者：
Wang, You
中科院分区：
文献类型：
--
作者：
Chen, Shichang;Du, Zhe;Wang, You
本研究的目的是在定量测量的基础上研究股骨滑车沟的自然形态。采用三维软件分析了中国健康成人（30-60岁）50名男性和50名女性的股骨ct模型。沿滑车槽轴从近端到远端创建同轴切割平面（增量15A度），然后在每个横截面标记滑车槽的最深点。分析了滑车槽的形状、位置和方向。滑车沟相对于机械轴侧向定位，由向外侧的近端和向内侧的远端组成。根据滑车槽在不同截面上的拐点，将滑车槽划分为45A度、60A度、75A度和90A度4种类型。相对于机械轴的中外侧位置为45A度，60A度，75A度，90A度，从外侧到内侧，远端部分沿同一路径延伸。滑车槽的取向相对一致和光滑，在相邻的两个节段之间，滑车槽的取向约为中间1A度，但在转弯处，滑车槽的取向约为中间10A度。滑车槽跟踪在人群中变化很大，主要分为四种类型。本研究有助于更好地了解滑车自然沟的解剖结构、假体的设计修改，并为研究髌骨追踪不良、滑车发育不良等髌股疾病提供参考价值。前瞻性研究，II级。
This study aimed to investigate the natural morphology of the femoral trochlear groove based on quantitative measurement.Computed tomographic femur models of 50 male and 50 female healthy Chinese adults (30-60 years) were analysed using three-dimensional software. Coaxial cutting planes (15A degrees increments) rotating about the trochlear groove axis from the proximal to distal point were created, followed by the deepest point of the trochlear groove marked at each cross section. The shape, position, and orientation of the trochlear groove were analysed.The trochlear groove was located laterally relative to the mechanical axis and consisted of the laterally oriented proximal part and medially oriented distal part. Based on the turning points located on different cross sections, the trochlear groove was classified into four types: types 45A degrees, 60A degrees, 75A degrees, and 90A degrees. The mediolateral position relative to the mechanical axis was types 45A degrees, 60A degrees, 75A degrees, and 90A degrees, from the lateral to medial side, while the distal parts of them extended along the same path. The orientation of the trochlear groove was relatively consistent and smooth, which oriented at approximately 1A degrees medially between two adjacent segments, except at approximately 10A degrees medially at the turning point.The trochlear groove tracking varies greatly amongst a population that is mainly categorized into four types. This study may be helpful for better understanding of the natural trochlear groove anatomy, prosthetic design modification, and provide the reference value for studying patellofemoral diseases such as patellar maltracking and trochlear dysplasia.Prospective study, Level II.