25/08/2025
This is a very helpful explanation for understanding pain in the legs which is radiating from the back.
HNP
This image explains Lumbar Radiculopathy, a condition where the nerves in the lower spine (lumbar) are compressed or irritated, causing pain that radiates down the legs. It is often caused by a herniated disc (pinched nerve) or narrowing of the spinal canal (spinal stenosis).
Image Explanation:
The image shows the radiating pain (radicular) based on the affected nerves:
1. S1 (Sacral Nerve 1)
Pain Area: Back of the thigh, calf, to the outer side of the foot and little toe.
Symptoms: Numbness, tingling, or weakness in that area. It can cause difficulty when standing on tiptoes.
2. L5 (Lumbar Nerve 5)
Pain Area: Outer side of the thigh and calf, top of the foot, to the big toe.
Symptoms: Difficulty lifting the big toe or ankle upwards (foot drop).
3. L4 (Lumbar Nerve 4)
Pain Area: Front of the thigh, inner part of the calf, to the inner side of the foot.
Symptoms: Pain when sitting for long periods, weakness when straightening the knee.
4. L3 (Lumbar Nerve 3)
Pain Area: Upper front thigh.
Symptoms: Difficulty when lifting the leg or squatting.
Summary:
Nerve Pain Pathway Area Weakness / Tingling
S1 Back of the outer foot → little toe
Heel, sole of the foot
L5 Outer side of the foot → top of the foot → big toe
Top of the foot
L4 Front of the thigh → inner part of the knee
L3 Upper front thigh Upper thigh
Solutions and Therapy:
Physical therapy & acupuncture can help relieve nerve pressure.
Anti-inflammatory medications (NSAIDs) or muscle relaxants.
Moxibustion & cupping at the lower back meridian points.
Surgery if severe and unresponsive to conservative therapy....
