SI Joint Pain & Sciatica

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Overview Common Symptoms Common Causes Related Treatments at Republic When to Seek Care FAQs
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When low back and leg pain radiate from a joint or a nerve, precise diagnosis makes all the difference.

Overview:

Sacroiliac (SI) joint pain comes from the joints connecting the base of the spine to the pelvis, while sciatica refers to pain that travels along the sciatic nerve, most often due to a compressed nerve root in the lower back. Both conditions can cause overlapping low back, buttock, and leg pain, but they arise from different structures and respond to different treatments. Accurately identifying which one (or both) is driving your symptoms is the key first step to effective care.

Common Symptoms

  • Dull ache or sharp pain in the low back, buttock, or one side of the pelvis
  • Pain that radiates down the back of the leg, sometimes past the knee
  • Numbness, tingling, or weakness in the leg or foot
  • Pain that worsens with standing, walking, or moving from sitting to standing
  • Discomfort that flares with prolonged sitting or one-sided movements

Common Causes

  • Herniated or bulging disc pressing on a spinal nerve root
  • Spinal stenosis, a narrowing of the spinal canal
  • Pregnancy, injury, or repetitive strain affecting the SI joint
  • Prior lumbar spine surgery or fusion altering pelvic mechanics
  • Muscle imbalance or uneven loading of the pelvis

Related Treatments at Republic

Sacroiliac (SI) Joint Injections • Epidural Steroid Injections • Medial Branch Block • Radiofrequency Ablation (RFA) • Nerve Blocks

When to Seek Care

See a specialist if pain lasts more than a few weeks, limits daily activities, or is accompanied by leg weakness, numbness, or new bowel or bladder changes, which require prompt evaluation.

Ready to get away from the pain?

Contact Republic Pain Specialists and get relief today.

Frequently Asked Questions

Republic Pain & Longevity is a patient-centered practice that combines interventional pain management with health optimization programs. We diagnose and treat the source of pain through advanced diagnostics and targeted, minimally invasive therapies, while also helping patients build long-term metabolic health, hormone balance, and vitality through personalized, ongoing care.

Traditional pain management focuses on diagnosing and treating a specific pain condition through procedures like nerve blocks, injections, and radiofrequency ablation. Health Optimization takes a broader, proactive approach — using interventional procedures, diagnostic labs, imaging, diet, exercise, coaching, and lifestyle strategies to decrease inflammation, improve energy, metabolic health, and resilience, whether or not you currently have a chronic pain condition.

We treat a wide range of conditions, including knee osteoarthritis, headaches and migraines, back and neck pain, joint pain, SI joint pain and sciatica, muscle spasms and myofascial pain, nerve entrapments, post-surgical pain, TMJ/jaw pain, long COVID and more. See our Conditions page for the full list and details on each.

No. Our treatments are minimally invasive, image-guided procedures — such as nerve blocks, radiofrequency ablation, and targeted joint or soft-tissue injections — designed to reduce pain and restore function without surgery.

The Peak Wellness Plan is our structured Health Optimization program built around advanced lab testing, a detailed clinical assessment, and a personalized care plan followed over nine months — targeting metabolic health, hormone balance, inflammation, weight, sleep, nutrition, and physical function, with ongoing follow-up to track progress. This integrated approach treats chronic pain as a whole-body issue, not just a symptom to numb – combining precise medical intervention with the lifestyle foundations that support lasting relief.

Vibility is our guided lifestyle curriculum — a structured, self-paced resource that supports patients through nutrition, movement, recovery, and everyday habit changes alongside their clinical care. Real-time reporting on weight, sleep, energy, digestion, focus, and mood keeps you accountable.

Yes. Peptide therapy and IV hydration are available individually or as part of our health optimization offerings, and can be incorporated into your personalized care plan where appropriate.

For patients who prefer to pay out of pocket or whose plan doesn’t cover a given service, we offer financing through Cherry Financial.

 

  • Aetna
  • Amerigroup
  • BCBS
  • Cigna
  • First Care
  • Healthsmart
  • Humana
  • Medicare
  • Medicaid
  • Molina Health
  • Superior
  • TriCare
  • United Healthcare

Your first visit is a consultation with our team to review your history, any prior imaging or labs, and your goals — whether that’s pain relief, health optimization, or both. From there, we build a personalized plan, which may include additional diagnostics, a procedure, or enrollment in a health optimization program.

Contact our office at 979-703-1426 to schedule a consultation.