髌股关节解剖形态的MRI观测及其意义

MRI study and the significance of patellofemoral joint

目的:采用磁共振对髌股关节的解剖形态进行较全面的定量的观测。方法:选取双下肢功能正常者164例,利用其膝关节MRI图像,分别观测髌骨、股骨滑车及髌腱的解剖形态。结果:(1)髌骨解剖形态:髌骨面角为(125.20±10.11)°,髌骨宽度为(4.17±0.38)cm,髌骨厚度为(2.26±0.26)cm,髌骨外侧面宽度为(2.12±0.25)cm,髌骨面厚度为(1.15±0.20)cm,髌骨外侧面比例为(0.54±0.04),髌骨相对厚度为(0.57±0.06),髌骨长度为(4.30±0.34)cm;其中髌骨宽度、厚度、外侧面宽度、长度、髌骨面厚度在性别间有显著差异(P<0.05)。(2)股骨滑车解剖形态:滑车沟角为(130.71±9.21)°,滑车沟宽度为(3.11±0.31)cm,滑车沟深度为(0.50±0.11)cm,滑车沟外侧面宽度为(1.87±0.23)cm,滑车沟外侧面比例为(0.60±0.05),滑车沟相对深度为(0.16±0.03);其中滑车沟宽度、深度、外侧面宽度在性别间有显著差异(P<0.05)。(3)髌腱长度:髌腱长度为(4.16±0.48)cm,髌骨高度为(0.97±0.16),二者在性别间有显著差异(P<0.05)。结论:髌股关节解剖形态的全面、定量观测结果,将有助于提高髌股关节疾病的疗效及改进髌股关节假体的设计。

Objective： To comprehensively and quantitatively study the patellofemoral anatomic morphology with magnetic resonance imaging （MRI）. Methods： 164 healthy adults with normal fimetion of both lower extremities were selected. The patellofemoral anatomic features were measured with their knee MRI. Results： For patella anatomy, patella angle was （125.20± 10.11 ）°, patella width （4.17±0.38） cm, patella thickness （2.26±0.26） cm, patella lateral facet width （2.12±0.25） cm, patella facet thickness （1.15±0.20） cm, patella lateral facet ratio （0.54±0.04）, patella relative thickness （0.57±0.06）, and patella length （4.30±0.34） cm; of them, the width, thickness, lateral facet width, facet thickness and length of patella were of significant statistical difference in gender （P〈0.05）. For femoral trochlear anatomy, sulcus angle was （130.71 ±9.21）°, sulcus width （3.11 ±0.31） cm, sulcus depth （0.50±0.11） cm, sulcus lateral facet width （1.87±0.23） cm, sulcus lateral facet ratio （0.60± 0.05）, and sulcus relative depth （0.16±0.03）; of them, the width, depth and lateral facet width of sulcus were of significant statistical difference in gender （P〈0.05）. For patella tendon, patellar tendon length was （4.16±0.48） cm, patellar height （0.97±0.16）, both of them were of significant statistical difference in gender （P〈0.05）. Conclusions： A comprehensive and quantitative knowledge of the patellofemoral anatomic features is helpful to improve the therapeutic effect of patellofemoral disease and the efficacy of the patellofemoral prosthesis design.