Motor function test of the trigeminal nerve

Motor function tests for trigeminal neuralgia include movement of the diaphragm, pterygoid, and pterygoid muscle. Because the masticatory muscles are all stopped in the mandible, under the trigeminal motion branch, the temporomandibular joint is exercised, and chewing and speech movement are participated, and the expression of expression is also participated to some extent. If the masticatory muscles are damaged, in addition to the above-mentioned dyskinesia, there may be facial symptoms such as facial deformation (such as jaw deformation and facial hypertrophy). In the above masticatory muscle group, the masseter, diaphragm and pterygium muscle contraction, the mandible can be lifted up (closed), and the external muscles of both wings are simultaneously contracted, so that the mandible can be forward and the lateral wing muscles contract, so that the mandible Move to one side, if the two sides rotate and contract, the left and right sides of the mandible can be moved. Basic Information Specialist classification: neurological examination classification: neuroelectrophysiology Applicable gender: whether women are fasting: not fasting Tips: Relax your facial muscles before you check. Normal value Both sides of the ankle and jaw are symmetrical, no muscle atrophy. Clinical significance Abnormal results: the trigeminal motor nucleus is dominated by the bilateral cortex, and the obvious side of the masticatory tendon suggests a karyotype or subnuclear lesion, and often has atrophy of the muscle of the masticatory muscle. Bilateral cortical medullary tendon lesions caused this lateral stenosis, with severe bilateral masticatory tendon accompanied by hypertrophy of the mandibular reflex. People who need to be examined: patients with symptoms of facial pain. Precautions Contraindications before examination: Relax facial muscles before examination. Requirements for inspection: Be careful not to bite the tongue while biting the molars. Inspection process Exercise examination of trigeminal neuralgia should first pay attention to whether the ankle and jaw of both sides of the observer are symmetrical, whether there is muscle atrophy, and then let the patient repeatedly bite the molars. The examiner uses both hands to grasp the masseter muscles and tendons on both sides. Muscles, such as muscle atrophy, or a weakened muscle contraction on one side, have diagnostic value. If in doubt, ask the patient to bite the tongue depressor with the molars on both sides. The indenter can judge the contraction force when pulling. In addition, when the patient has a large mouth, observe whether the mandible is offset to the affected side. If there is an offset, it proves that the trigeminal nerve is damaged, causing the internal and external tendons, and the inner and outer muscles of the flank are pushed to push the lower jaw. Caused by the front and the affected side. However, patients with mandibular joint disease should be treated with bilateral asymmetry. Let the patient shift its jaw to both sides, and the examiner should take resistance to observe the contractile force of the wing muscle. The patient will have his mandible forward (wing muscle) and posterior (thoracic muscle, second abdominal muscle), pay attention to whether there is skew. Not suitable for the crowd Inappropriate population: patients with a mandibular fracture or disease. Adverse reactions and risks Nothing.

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