Hoffman sign

The Hoffmann sign belongs to pathological reflexes. The examiner holds the midpoint of the middle finger of the patient with the right hand and the middle finger to make the wrist dorsiflexion, and the other refers to the natural relaxation of the semi-flexible state, and then the examiner quickly scrapes the patient's middle finger nail with the thumb, if other occurs The palmar flexion movement of each finger is positive for the Hoffman sign. Before the inspector, it is best to cut the nails of the thumb and the right hand and the middle finger of the right hand to prevent the patient from being stabbed or scratched. Basic Information Specialist classification: neurological examination classification: neuroelectrophysiology Applicable gender: whether men and women apply fasting: not fasting Analysis results: Below normal: Normal value: no Above normal: negative: Normally, only the middle finger has a palmar movement. Positive: A Huffman sign on one side is positive, indicating that the lateral sacral reflex is hyperthyroidism, suggesting that there may be pyramidal tract damage, which is more common in spinal cord lesions. Positive on both sides, if there is no other signs of nervous system, there is no localization significance, and it can not be said that the bilateral pyramidal lesions. Tips: It is best to cut the nails of the thumb and right hand and the middle finger of the right hand before the inspection to prevent the patient from being stabbed or scratched. Normal value Normally, only the middle finger has a palmar movement. Clinical significance Abnormal results: one side of the Hoffman sign is positive, indicating that the lateral sacral reflex is hyperthyroidism, suggesting that there may be pyramidal tract damage, more common in spinal cord lesions. Positive on both sides, if there is no other signs of nervous system, there is no localization significance, and it can not be said that the bilateral pyramidal lesions. People in need of examination: Patients suspected of having damage to the pyramidal tract. Positive results may be diseases: acute suppurative myelitis, spinal schwannomas, spinal cord injury, extrapyramidal damage considerations Before the examination, the inspector should cut the nails of the thumb and the right hand and the middle finger of the right hand to make the patient puncture or scratch. Requirements for inspection: 1. The right hand of the examiner and the middle finger should hold the midpoint of the middle finger of the patient to be moderate. 2. The inspector should not use the thumb to quickly scrape the middle finger nail of the patient, and the force should not be too large to prevent the patient's nail from being scratched. Inspection process Inspection method: The examiner holds the midpoint of the middle finger of the patient with the right hand and the middle finger to make the wrist dorsiflexion, and the other refers to the natural relaxation of the semi-flexible state, and then the examiner quickly scrapes the patient's middle finger nail with the thumb. If there is a palmar movement of the other fingers, it is a positive Hoffman sign. Not suitable for the crowd Inappropriate people: patients with hand disability or diseases on their own fingers. Adverse reactions and risks Nothing.