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Sensation, muscle strength, neurological abnormalities in the lower extremities

Introduction
Cause
Examine
Diagnosis

Introduction

Introduction The main clinical manifestations of thoracic spinal stenosis are a series of syndromes of blood supply circulation, lower limb sensation, muscle strength and neurological abnormality of the thoracic spinal cord caused by thoracic insufficiency.

Cause

Cause

The blood supply circulation, sensory and motor conduction disorders of the thoracic spinal cord caused by the pressure-induced substance.

There are many mechanisms that cause thoracic spinal stenosis, congenital: spinal canal dysplasia, pedicle shortening; hereditary bone metabolism abnormalities such as Paget's disease; Vit-D resistant bone disease. There are also acquired: nephrotic abnormal bone metabolism, skeletal fluorosis. The most common clinical problem is due to strain factors.

Examine

an examination

Related inspection

Chest MRI McCazny test chest CT examination of two lower limb lengths

Abnormal feelings of lower limbs, such as numbness, feeling slow, feeling of cotton on the foot, appearance of sensory plane; abnormal muscle strength of lower limbs, such as weakness, difficulty in walking; increased muscle tension in lower limbs, muscle tension, knives and sputum; abnormal nerve reflex, Such as knee, tendon reflexes active or hyperactive, knee, hernia, Barbinskin sign positive; nerve root irritation symptoms, such as chest and back bandage, pain; spinal cord, cauda equina circulatory disorder, neurogenic intermittent claudication; sphincter dysfunction Second, it is difficult; complete spinal cord compression, paraplegia, and incontinence.

The final diagnosis of thoracic spinal stenosis relies mainly on MRI diagnostic techniques, and the specificity and sensitivity of MRI is quite satisfactory.

Diagnosis

Differential diagnosis

Differential diagnosis of lower limb sensation, muscle strength, and neurological abnormalities:

1. Paresthesia in the anterior medial leg: Symptoms in the anterior medial leg are symptoms of lumbar disc herniation. Mainly the waist 4-5: the affected nerve is L5; the pain is the ankle, the thigh and the lateral side of the calf; the tender point is the side of the spine 4 to 5; the anterior and lateral medial area of the lower leg feels abnormal; Extensible, the muscles of the anterior lateral muscles of the calves were atrophied and the nerve reflexes were unchanged.

2, the inner feeling of the calf is lost: the high-level injury of the femoral nerve injury is the sensation of the anterior medial and lateral calf. Abnormal feelings of lower limbs, such as numbness, feeling slow, feeling of cotton on the foot, appearance of sensory plane; abnormal muscle strength of lower limbs, such as weakness, difficulty in walking; increased muscle tension in lower limbs, muscle tension, knives and sputum; abnormal nerve reflex, Such as knee, tendon reflexes active or hyperactive, knee, hernia, Barbinskin sign positive; nerve root irritation symptoms, such as chest and back bandage, pain; spinal cord, cauda equina circulatory disorder, neurogenic intermittent claudication; sphincter dysfunction Second, it is difficult; complete spinal cord compression, paraplegia, and incontinence.