Matsuda S, Yoshimura Y, Lin Y
Department of Oral and Maxilloacial Surgery, Shimane Medical University, Japan.
Int J Oral Maxillofac Surg. 1994 Oct;23(5):266-70. doi: 10.1016/s0901-5027(05)80105-5.
Twenty-four patients (48 joints) presenting signs and symptoms of internal derangement of the temporomandibular joint (TMJ) were studied, combinations of coronal and sagittal magnetic resonance imaging (MRI) being used for assessment of the TMJ disk. In the coronal MRI, lateral or medial disk displacement was confirmed in 10/48 joints (20.8%). Disk displacement in a lateral direction was confirmed in six joints, and in a medial direction in four joints, while, in the sagittal images, anterior displacement of the disk without reduction (ADWR) was observed in 20/48 joints (17/24 cases), among which bilateral ADWR were found in three cases. Rotational disk displacements were observed in eight joints, and of these cases six were anterior and lateral disk displacements, while the remaining two were anterior and medial disk displacements. The disks tended to be displaced in a lateral direction in cases of rotational disk displacement.
对24例出现颞下颌关节（TMJ）内紊乱体征和症状的患者（48个关节）进行了研究，采用冠状位和矢状位磁共振成像（MRI）相结合的方法评估TMJ盘。在冠状位MRI中，48个关节中有10个（20.8%）证实存在外侧或内侧盘移位。6个关节证实存在外侧盘移位，4个关节存在内侧盘移位，而在矢状位图像中，48个关节中有20个（24例中的17例）观察到盘前移位无复位（ADWR），其中3例为双侧ADWR。在8个关节中观察到盘旋转移位，其中6例为前外侧盘移位，其余2例为前内侧盘移位。在盘旋转移位的情况下，盘倾向于向外侧移位。
