Femoral nerve damage

Introduction Femoral nerve damage is part of a diabetic polyneuritis lesion, sometimes accompanied by damage to other peripheral nerves. Diabetic patients may gradually have quadriceps atrophy, weak muscle strength and abnormal feeling of the thigh. It is suggested that the femoral nerve has been damaged.

Cause

Diabetic patients develop arteriosclerosis earlier and are more severe. In the femoral nerve of patients with diabetic muscular atrophy, the nutritional artery wall is obviously thickened, resulting in insufficient blood supply to the nerve. Skanse and Gydetl performed an autopsy on a patient with diabetes complicated with bilateral femoral nerve damage and found that the femoral nerve myelin has a degenerative change. The nerve fibers are atrophied, and some of the nerve fibers are replaced by other fibrous tissues, and the walls of the neurotrophic arteries become thicker.

an examination

Related inspection

Quadriceps muscle strength test F-wave

The weakness of the hip and knee extension is gradually atrophy of the quadriceps muscle, and the knee reflex is weakened or disappeared. The anterior medial thigh and the inner side of the calf are dull. It can be laborious for the patient to stand up from the chair or step up. Beruns (1890) described 3 patients with diabetes who had severe hip pain, and the thigh muscle strength weakened. In 1960, Calverley reported 14 cases of diabetes complicated with femoral nerve damage, 8 of which were sudden hip or hip and thigh front pain, followed by weakened thigh muscles and feeling dull, and knee reflexes weakened. This phenomenon indicates that the blood supply to the femoral nerve is caused by a sudden onset of the disorder.

Differential diagnosis

Differential diagnosis of femoral nerve damage:

Diabetic patients with muscular atrophy as the sole symptom are rarely seen clinically and are often misdiagnosed as other myogenic, neurogenic or cancerous myopathy. Need to be identified.

The weakness of the hip and knee extension is gradually atrophy of the quadriceps muscle, and the knee reflex is weakened or disappeared. The anterior medial thigh and the inner side of the calf are dull. It can be laborious for the patient to stand up from the chair or step up. Beruns (1890) described 3 patients with diabetes who had severe hip pain, and the thigh muscle strength weakened. In 1960, Calverley reported 14 cases of diabetes complicated with femoral nerve damage, 8 of which were sudden hip or hip and thigh front pain, followed by weakened thigh muscles and feeling dull, and knee reflexes weakened. This phenomenon indicates that the blood supply to the femoral nerve is caused by a sudden onset of the disorder.

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