Leg pain with back pain or mostly leg pain from spine
If you have leg pain, numbness or tingling, along with your back pain, you may have a pinched nerve. It may be called Lumbar Radiculopathy. The most common cause is usually a herniated disc.
Jensen Rikke K, Kongsted Alice, Kjaer Per, KoesBart. Diagnosis and treatment of sciatica BMJ 2019; 367 :l6273
Sciatica is pain along the sciatic nerve that goes along the back of your leg. This may be cause by lumbar radiculopathy, by compression of L4-S3 nerve roots, usually by disc herniations. Less commonly, it can also be caused by compression elsewhere, such as by the pyriformis muscle.
Other causes of back/ leg/ buttock pain may be inflammation or degeneration of the sacroiliac joint, and nerve compression by the pyriformis muscle (show from front and back below):
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