[摘要]目的：探讨膝关节骨关节炎软骨下骨病理损伤MRI模式。方法：本组共106例,临床均怀疑膝关节骨关节炎。采用 GE Signa Profile SYS# 0.2TMR Siemens Symphony Maestro class 1.5 T 超导型，成像方位为矢状位、冠状位及横断位 ； 序列为自旋回波 ( S E ) T 1 WI ，T 2 WI，自旋回波质子加权（脂肪抑制）序列。结果：膝关节软骨下骨灶状损伤呈多样性改变，包括股骨、胫骨、髌骨软骨下骨灶状损伤。MRI表现：(1) 软骨下骨灶状骨髓水肿，本组88个病灶。（2）软骨下骨灶状脂肪样损害。本组79个病灶。(3) 软骨下骨灶状血液样损害，本组96个病灶。 (4) 软骨下骨灶状水样损害，本组99个病灶。(5) 软骨下骨灶状纤维样损害。本组87个病灶。结论：MRI膝关节骨关节炎软骨下骨病理损伤MRI模式对明确病理改变、指导临床诊断和治疗有重要意义。

[Abstract] Objective: To investigate the cartilage of knee joint osteoarthritis MRI appearance. Methods: There were 106 cases in this group, all clinical suspicion of osteoarthritis of the knee. The GE Signa Profile SYS# 0.2TMR Siemens Symphony Maestro Class . 1.5 T superconductive, imaging range for sagittal, coronal and transverse; sequence for the spin echo (S E) T 1 WI, T 2 WI, spin echo proton weighted (fat suppression sequence). Results: The knee joint cartilage focal damage was variable, including femur, tibia, patella subchondral focal injury. MRI features: (1) the subchondral bone marrow edema and focal lesions, in 88 spots . (2) the subchondral bone of focal fatty lesion. in 79 spots. (3) the subchondral bone focal blood like lesions, in 96 spots. (4) the subchondral bone focal water damage, in 99 spots. (5) the subchondral bone foci fiber like damage in 87 spots. Conclusion: MRI knee osteoarthritis subchondral bone pathological damage of MRI pattern has the important meaning for the clinical diagnosis and treatment of pathological changes, clear guidance.