temporomandibular arthrography

Temporomandibular joint angiography plays an important role in the diagnosis and treatment of temporomandibular joint disorders. It can diagnose lesions found in the articular disc and other soft tissues in the joint. Patients with a history of severe iodine allergic reactions and infections in the skin of joints, patients with bleeding disorders and anticoagulant medications should not be examined by arthrography. Basic Information Specialist classification: oral examination classification: X-ray Applicable gender: whether men and women apply fasting: not fasting Tips: Do not exercise vigorously the day before the check to prevent damage to the face joints, so rest well. Normal value 1. Lateral body layer: Closed position: (1) The contrast agent is S-shaped with a thin intermediate and thick ends. The front is the front upper crypt; the rear is the rear upper crypt; (2) The articular disc is located between the contrast agent and the condyle, and the posterior margin of the posterior band is flat and lateral. Opening position: (1) The anterior upper crypt disappears, and the upper crypt expands significantly, occupying the entire joint socket; (2) The front part of the lower edge of the contrast agent shows the image of the three-band boundary of the main body of the disc, and the middle belt is facing the cross. 2. Xu Lewei (Xue's position): Closed position: (1) (similar to the lateral body layer, that is, the contrast agent is thin in the middle, thick S-shaped at both ends. The front is the anterior superior crypt; the rear is the posterior crypt); but the anterior superior and posterior crypt are comparable. Small layer; (2) The contrast agent in the middle and inner side of the upper cavity forms a half moon shape, covering a part of the condyle. Opening position (similar to the lateral body layer): (1) The anterior upper crypt disappears, and the upper crypt expands significantly, occupying the entire joint socket; (2) The front part of the lower edge of the contrast agent shows the image of the three-band boundary of the main body of the disc, and the middle belt is facing the cross. Clinical significance Abnormal results: (1) The reversible disc is displaced before the disc, the front gap is widened, and the trailing edge of the disc is located at the condyle. The open sputum relationship is normal, the anterior crypt is almost disappeared, and the crypt is enlarged and enlarged. (2) The irreversible disc front displacement is the same as above, but the front gap is wider, and the disc displacement is more obvious. The open condyle movement is limited. The disc shadow is deformed, the anterior superior crypt contrast agent is retained, and the posterior upper crypt does not increase. (The front displaced disc cannot be reset and squeezed. (3) lateral displacement (shown in the closed position of the Xu Le position) external displacement: the external "S" shape of the upper contrast agent is compressed and thinned, and the image of the contrast agent becomes overfilled and widened. (4) Rotational displacement Since the front end of the disc is inward, the rear end is rotated outward (often with the disc forward). The clinical examination of the population to be examined found that there are joints, such as joints, locks, and condylar movements, and the symptoms of joint structure are constrained. It is necessary to further clarify what type of changes are present; plain or tomography has joint bone changes. Or obvious abnormal joint space; estimate the effect of splinting treatment; clinical examination found continuous frictional sound in the joint and suspected perforation of the articular disc; observation of articular disc reduction or repair of articular disc perforation; diagnosis of intra-articular free body or placeholder In the case of sexual lesions, temporomandibular joint angiography can be performed. Precautions Taboo before the test: Do not exercise vigorously the day before the test to prevent damage to the face joints, so rest well. Requirements for inspection: Follow the instructions of the doctor for the operation of the action specification. Inspection process The two fingers of the little finger were inserted into the external auditory canal, palpate to the front, and the two hands were placed in front of the tragus on both sides. The patient was opened and closed to check the movement of the condyle and the presence or absence of squeaking and friction. In addition, it is necessary to check whether the left and right sides of the face are symmetrical, whether the mandibular parts are deformed, whether the midpoint is centered, whether the joint areas and the masticatory muscles are tender, whether the mandibular movement is skewed, and whether the occlusal relationship is good. Not suitable for the crowd Inappropriate crowd: None. Adverse reactions and risks Nothing.