counter attack

The paralyzed patient made a fist, and the upper limb was in the shoulder joint and forced the forearm to the chest. The inspector pulled his arm in the opposite direction and then suddenly let go. If the patient's forearm continues to flex hard at this time, his hand can counterattack his chest, which is a positive counterattack. Counter-attack positive has a reference for the diagnosis of cerebellar lesions. When a normal person is exercising, the active muscle contraction is accompanied by a synergistic contraction movement of the antagonist muscle to stabilize the action. Basic Information Specialist classification: neurological examination classification: neuroelectrophysiology Applicable gender: whether men and women apply fasting: not fasting Reminder: Patients with injuries and disabilities in the arm itself are not suitable for examination. Normal value When a normal person is exercising, the active muscle contraction is accompanied by a synergistic contraction movement of the antagonist muscle to stabilize the action. Clinical significance Abnormal results of counterattack positives have a reference for the diagnosis of cerebellar lesions. When the cerebellum is damaged, the synergistic movement of the active muscle and the antagonist muscle may be impeded, so this may occur. People who need to be examined: patients with cerebellar damage. Precautions Pre-examination taboo: Maintain a normal diet and schedule, protect your chest and prevent your forearm from hitting your chest. Requirements for examination: When the flexion forearm is bent to the maximum of the chest, it is not necessary to use excessive force to prevent the forearm from being strained. Inspection process The paralyzed patient made a fist, and the upper limb was in the shoulder joint and forced the forearm to the chest. The inspector pulled his arm in the opposite direction and then suddenly let go. Normally, the forearm flexion can be immediately stopped. If the patient's forearm continues to flex at this time, the hand can counterattack his chest, which is a positive counterattack. Not suitable for the crowd A patient with an injured or disabled arm. Adverse reactions and risks Generally no adverse reactions.