Posterior tibial nerve injury

Introduction to posterior tibial nerve injury The phrenic nerve descends vertically from the sciatic nerve, descends from the midline of the armpit to the lower edge of the diaphragm, enters the deep side of the soleus muscle, and becomes the posterior tibial nerve. The phrenic nerve has a branch to the gastrocnemius, soleus, diaphragm, diaphragm, The posterior tibial muscle, the long flexor and the long flexor go down to the Achilles tendon and the medial malleolus. They are divided into the medial and lateral nerves of the plantar by the flexor support zone, which dominates the plantar muscle and the plantar skin. basic knowledge The proportion of illness: 0.0035% Susceptible people: no special people Mode of infection: non-infectious Complications: high arch

Causes of posterior tibial nerve injury

(1) Causes of the disease

The phrenic nerve is located in the thigh and deep in the lower leg, and there is less chance of injury. The penetrating nerve can damage the phrenic nerve and its main branches, often between the internal and the Achilles tendon.

(two) pathogenesis

There is currently no relevant information.

Prevention of posterior tibial nerve injury

Prevent violent injuries.

Post-orbital nerve injury complications Complications

Bowed feet, claw toes and plantar ulcers can occur.

Symptoms of posterior tibial nerve injury Common symptoms Upturned valgus can not bend and varus

Exercise

The sacral nerve innervates the posterior part of the calf and the plantar muscle. The injured foot can not be deformed and varus, and the toe valgus deformity occurs. When walking, the heel is difficult to move off the ground, and the foot tendon can cause the arched foot and claw. Toe deformity.

2. Feeling

The sensory loss zone is the posterior aspect of the calf, the lateral edge of the foot, the heel and the dorsal and dorsal sides of each toe, so it is called the slipper-type paralysis area.

3. Nutrition

There are often ulcers on the soles of the feet, and the feet are susceptible to trauma, frostbite and burns. They often cannot walk due to ulcers, which seriously affects function.

Examination of posterior tibial nerve injury

Electrophysiological examination: the conduction velocity of the ipsilateral sacral nerve is slowed down, the amplitude is decreased, the latency of F wave or H reflection is prolonged; the latency of SEP is prolonged, the amplitude is decreased, and the wave interval is prolonged; the electromyography of the sacral innervated muscle is mostly the denervation potential While the healthy side is normal.

Diagnosis and differentiation of posterior tibial nerve injury

Sharp stab wound or penetrating history, partial muscle spasm in the calf and foot, foot valgus deformity, arched foot and claw toe caused by intramuscular tendon, sensory loss is slippery paralyzed area, electromyography The examination can confirm the diagnosis.

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