With herniation in the lower (lumbar) back, sciatica may develop. Sciatica is pain that travels through the buttock and down a leg to the ankle or foot because of pressure on the sciatic nerve. Low back pain may accompany the leg pain.
With herniation in the upper part of the lumbar spine, near the ends of the lowest ribs, you may have pain in the front of the thigh...
Herniated Disc Symptoms: Nerve Symptoms, Leg Pain, & More
There are several medical web sites that mention this front thigh pain releated to sciatica.