Inability to dorsiflex the foot and toes

Introduction The common peroneal nerve damage is that the foot and the toe can not dorsiflexion, the foot is drooping, the walking is high, and the toe is first landed, showing a cross-threshold gait. The anterior and lateral shank feels impaired.

Cause

(1) penetrating injury, humeral head fracture trauma, traction can damage the superficial peroneal nerve and deep sacral nerve.

(2) Compression: the total nerves around the humeral neck are most vulnerable to prolonged sputum.

(3) Lead poisoning, metabolic disorders (diabetes), connective tissue diseases (nodular polyarteritis) and leprosy.

an examination

Related inspection

Electromyography X-ray lipiodol angiography

Electrophysiological examination, through electromyography and evoked potential examination, to determine the extent, extent, recovery and prognosis of nerve injury.

Differential diagnosis

Flexion and contracture of the toes: Trauma that causes severe swelling of the foot, such as soft tissue contusion, calcaneus and tibiofibular fractures, can cause intrinsic ischemic necrosis of the foot, followed by a characteristic toe deformity. Trauma that causes severe swelling of the foot, such as soft tissue contusion, calcaneus and tibial fractures, can cause intrinsic ischemic necrosis of the foot, followed by a characteristic toe deformity. Among them, the deep muscles of the soles have the most chance of involvement, such as the adductor muscles, and its contracture can cause the big toes to be pulled toward the lower side of the second toe or underneath, which makes the shoes and walking feel uncomfortable.

Foot pain when the toe is flexed and flexed: the foot scaphoid fracture symptoms are obvious when the toe is flexed and flexed. The middle ankle joint, which is composed of the foot scaphoid, the wedge bone and the tibia, is also called the transverse joint, which is easy to cause dislocation due to trauma. Although the above-mentioned simple bone fractures are not frequent, they are not uncommon. About 0.3% of all body fractures should still be noticed.

The foot can not be bent and varus: the posterior tibial nerve injury manifests as the foot can not be bent and varus.

1. Exercise: The sacral nerve innervates the posterior part of the calf and the plantar muscle. After the injury, the foot can not bend and varus, and there is a deformed shape of the toe. When walking, the heel is difficult to move off the ground. Intramuscular tendons cause arched feet and claw toe deformities.

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. The feet are vulnerable to trauma, frostbite and burns. They often cannot walk because of ulcers, which seriously affects function. Sharp stab wound or penetrating history, partial calf and foot muscle spasm, foot valgus deformity, arched foot and claw-like toe caused by intramuscular tendon, loss of feeling is a slippery paralyzed area. Electromyography can confirm the diagnosis.

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