The manifestation of forearm nerve rupture?

summary

In recent years, with the increase of the severity of trauma, more and more brachial plexus injury has become a common clinical disease. Brachial plexus injury is a serious disability, and the treatment is really difficult. However, after nearly 40 years of continuous research, great progress has been made. The manifestation of forearm nerve rupture? Let's talk about it

The manifestation of forearm nerve rupture?

The upper brachial plexus includes C5, C6 and C7. Because the muscular dysfunction of C7 nerve is not obvious, the main clinical manifestations are similar to the injury of upper trunk nerve, that is, shoulder abduction dysfunction caused by deltoid paralysis of axillary nerve and elbow flexion dysfunction caused by biceps brachii paralysis of musculocutaneous nerve.

The lower brachial plexus is composed of the 8th cervical nerve and the 1st thoracic nerve, which is the same as the lower trunk nerve. The main clinical manifestations are ulnar nerve, part of median nerve and radial nerve paralysis, that is, the fingers can not be extended and flexed, and there are signs of hand internal muscle paralysis, while the shoulder, elbow and wrist joint activities are basically normal. The whole brachial plexus injury showed flaccid paralysis of the whole upper limb muscle and loss of active joint function.

If the brachial plexus is root avulsion, the characteristic manifestations are neck 5-7-levator scapulae, rhomboid and serratus anterior palsy; Horner's sign appeared in neck 8 and chest 1, that is, the affected eye was narrow, the eyeball was slightly depressed, the pupil was narrowed, and there was no sweating in the face and neck. The sensory innervations of the brachial plexus roots were: c5-lateral of upper arm, c6-lateral of forearm and thumb, index finger, c7-middle finger, c8-ring, little finger and medial of forearm, t1-medial, middle and lower part of upper arm.

matters needing attention

Master breech midwifery skills: after the delivery of the fetal trunk, immediately assist the shoulder adduction, and then pull the fetal head after the delivery of both arms. The force should be moderate, not forced, and the indications of cesarean section should be appropriately relaxed to improve the quality of breech delivery.