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NEWS & STORIES AT ST. LUKE'S

What is Sciatica?

calendar_today Jul 15, 2026

schedule 3 min. read

verified Medically verified by Samuel Staula, DC

What is Sciatica?

Understanding sciatica

Sciatica isn’t just leg pain or back pain. It’s a symptom that can be caused by several different underlying conditions, including irritation or compression of the sciatic nerve, the largest nerve in the body. When this nerve or the lower lumbar spinal nerve root becomes pinched or inflamed, pain can radiate from the lower back down the leg. Some people also experience tingling, numbness or muscle weakness. 

Sciatica can be the result of inflammation or nerve compression from a bulging disc or foraminal stenosis, as well as muscle entrapment and referred pain from the sacroiliac joint and hip muscles,” explains Samuel Staula, DC, of St. Luke’s Chiropractic Care and SLUHN Chiropractic Residency Program Director. “The key is determining the cause early so treatment can be tailored to the patient and the patient can be correctly triaged with imaging and specialist referral if necessary.” 

Understanding the underlying source makes it easier to treat sciatica effectively and prevent future flare‑ups.

Common causes of sciatica

  1. Herniated or bulging discs
  2. Spinal stenosis (narrowing of the spinal canal or neural foramen) 
  3. Sacroiliac joint dysfunction 
  4. Entrapment by the piriformis muscle  
  5. Prolonged sitting or poor posture 
  6. Degenerative changes in the spine

Advanced sciatica treatment at St. Luke’s

Chiropractic care, end-range loading exercises, targeted stretching, therapeutic soft tissue procedures, core/hip strengthening and posture/ergonomics correction can often help relieve symptoms and restore movement. 

Sciatica symptoms can vary widely, but early attention is key to preventing long-term issues,” adds Staula. “Addressing the root cause, not just the pain, helps patients recover more fully and reduce the likelihood of future flare‑ups.” 

Click here to learn more or for direct access to St. Luke’s Chiropractic Care, call 484-526-2011.