radial periosteal reflex

Periosteal reflex is a reflex that slams the styloid process of the humerus, flexing the elbow, flexing the finger, and elbow. The patient's elbow joint was placed in a semi-flexed and semi-extended position, and the forearm was slightly pre-expanded. The examiner slammed the side of the lateral humeral stump with a percussion hammer 2 cm. When normal, it can be expressed as elbow flexion. If the flexion of the forearm is not obvious, and the finger flexes, it is the periosteal reflex. It is appropriate for the examiner to use the percussion hammer to slam. Basic Information Specialist classification: growth and development check classification: physical examination Applicable gender: whether men and women apply fasting: not fasting Tips: Relax your arms before checking. Patients with an arm disability or injury are not suitable for this examination. Normal value The normal reaction is forearm pronation and elbow flexion. Clinical significance Abnormal results 桡 periosteal reflex is a special reflection performance. As the contractile force of the active tendon becomes smaller, it spreads after stimulating the anterior horn of the afferent spinal cord, and at the same time causes contraction of the antagonist muscle; or due to the paralysis of the active muscle, causing the stretch reflex of the antagonist muscle. Found in the cervical spinal cord 5 ~ 6 lesions. People who need to be examined: patients with suspected cervical spinal cord 5 to 6 lesions. Precautions Contraindications before examination: Relax your arms before checking. Requirements for inspection: It is appropriate for the inspector to use the percussion hammer to slam. Inspection process The examination method is as follows: the elbow joint on one side of the patient is placed in a semi-flexible position, and the forearm is slightly pre-expanded. The examiner slammed the side of the lateral humeral stump with a percussion hammer 2 cm. When normal, it can be expressed as elbow flexion. If the flexion of the forearm is not obvious, and the finger flexes, it is the periosteal reflex. Not suitable for the crowd Inappropriate people: patients with arm disabilities or injuries. Adverse reactions and risks Nothing.