“Irritation of the sciatic nerve is caused by nerve root entrapment (also known as nerve compression, pinched nerve or entrapment neuropathy). This particular form of entrapment is called lumbar radiculopathy, since the damaged nerves roots are located in the lumbar (lower back) portion of the spine. The nerve compression itself may be caused by: 1-A herniated disc – also known as a ruptured or slipped disc. 2-Spinal stenosis-a narrowing of the canal that houses the spinal nerves. 3-Inflammation of nearby anatomical structures caused by: bone or muscle injuries, diseases such as tumors/infections, & even pregnancy.”.

Hospital of Special Surgery (NYC)