Symptoms of pain in the femoral nerve

summary

Femoral neuralgia refers to the pain along the distribution area of the femoral nerve, that is, along the groin to the front of the thigh, the inside of the knee joint and the inner ankle of the leg. Femoral neuralgia can be seen in L3, 4 nerve root diseases, such as lumbar disc herniation or pelvic inflammation or tumor compression, iliopsoas myositis, diabetes, etc. Treatment depends on the disease. Symptoms of the pain of the femoral nerve? Let's talk about it

Symptoms of pain in the femoral nerve

Clinically, there is pain in the groin or anterior femoral region, which is mainly characterized by pain in the groin and anterior femoral region innervated by the nerve and radiating to the medial side of the leg. If the lumbar plexus is damaged, the lower abdomen and perineum also have pain. There is also pain in the upper back when the root is damaged. The pain radiates to the inner side of the leg and the front of the thigh, and aggravates when coughing, sneezing and waist activity.

There were hypersensitivity or hypoesthesia in the area of femoral nerve distribution, difficulty in jumping and squatting, mild atrophy of muscles in this area, and weakening of knee tendon reflex on the affected side. Tenderness can be found in 1 / 3 of inguinal ligament, lateral femoral artery, medial knee, posterior medial malleolus and inner edge of foot. There was obvious tenderness near the spinous process of the upper lumbar spine, radiating to the groin, and tension of the lumbodorsal muscles.

The main clinical manifestations of femoral nerve pain are severe neuralgia and hyperalgesia in front of thigh. When the patient is in the prone position and the examiner lifts up his lower limbs, pain occurs in the front of the thigh and groin; If the patient squats on both feet to keep up, it can also cause pain and need to straighten. This is Wassermann's sign.

matters needing attention

Femoral nerve block: the patient was lying on his back, and the puncture point was 1cm below the midpoint of the line between the anterior superior iliac spine and pubic tubercle, and the lateral femoral artery. When the left index finger touches the femoral artery, the right hand holds the needle, connects the syringe with local anesthetic, and penetrates vertically along the lateral side of the left index finger. When the tip of the needle crosses the deep fascia and touches the sub fascial nerve, there is abnormal sensation (reaching the medial side of the knee and leg). If there is no abnormal sensation, a fan-shaped puncture can be made parallel to the inguinal ligament until abnormal sensation is detected. No blood is pumped and 10-15ml local anesthetics are injected.