SI Joint Pain

 

SI Joint Pain Treatment in Princeton & Lawrenceville, NJ

Pain in the low back or buttock can come from many structures. One common source is the sacroiliac (SI) joint.

The SI joints connect the base of your spine to your pelvis. They help transfer force between your upper body and legs. When irritated, they can cause sharp or aching pain in the lower back, buttock, or even the groin.

SI joint pain can feel stubborn. But with the right diagnosis and load management, most people improve without surgery.

Quick Takeaways

• SI joint pain often presents as low back or buttock pain
• It may worsen with standing, running, or single-leg loading
• Diagnosis is clinical; imaging is not always required
• Progressive strength and stability work are key
• Most cases improve with conservative care

At Princeton Sports and Family Medicine, P.C., PSFM Wellness, and Fuse Sports Performance, we don’t believe in guessing your way through training. We believe in building resilient, durable athletes who arrive at race season strong, confident, and healthy. In addition to problem-focused visits, we offer sports performance evaluations to stop problems before they start. Plan your visit today.

WHO THIS AFFECTS + WHY IT HAPPENS

Who Gets SI Joint Pain?

• Runners with unilateral buttock pain
• Postpartum individuals
• Athletes with asymmetrical sports (soccer, tennis)
• Adults with prolonged sitting jobs
• Individuals with prior low back injury

In Princeton, West Windsor, and surrounding communities, we frequently see active adults who increase mileage or intensity and develop posterior hip pain that is actually SI-related.

Why It Happens

The SI joint is designed for stability, not large movement. Pain often develops from:

• Repetitive load without adequate strength
• Pelvic asymmetry
• Core weakness
• Hip instability
• Sudden changes in training volume
• Pregnancy-related ligament changes

Risk Factors

• Prior low back pain
• Leg length discrepancy
• Hypermobility
• Weak gluteal muscles
• Poor load progression
• Prolonged sitting

SYMPTOMS + WHAT’S NORMAL VS NOT

Typical SI Joint Symptoms

• Pain over one side of the low back
• Buttock pain
• Pain with single-leg stance
• Pain climbing stairs
• Pain rolling in bed
• Discomfort when transitioning from sitting to standing

Pain may radiate into the posterior thigh but usually does not extend below the knee.

What’s Often Normal

• Mild soreness after prolonged sitting
• Temporary flare-ups after heavy lifting
• Gradual improvement with activity modification

Seek Urgent Care Now If…

• Progressive leg weakness
• Numbness in the groin area
• Loss of bowel or bladder control
• Severe trauma
• Fever with severe back pain

If you are in Hopewell or Robbinsville and experience these symptoms, seek urgent medical care immediately.

DIAGNOSIS

What We Assess in Clinic

SI joint pain is diagnosed clinically. We evaluate:

• Pain location and pattern
• Aggravating activities
• Hip and lumbar mobility
• Core and gluteal strength
• Provocative SI joint maneuvers
• Movement symmetry

No single test confirms SI dysfunction. Diagnosis relies on a combination of history and exam findings.

When Imaging May Be Considered

Imaging may be discussed if:

• Symptoms persist despite conservative care
• There is concern for fracture or inflammatory arthritis
• Neurologic symptoms are present

X-rays, MRI, or advanced imaging are not always necessary early on.

What to Expect at Your Visit

• A detailed pain history
• Strength and mobility testing
• Functional movement assessment
• Education about SI joint mechanics
• A clear rehab plan

TREATMENT OPTIONS

Self-Care Basics

• Avoid prolonged single-leg loading early
• Modify running volume
• Use heat or ice for comfort
• Gentle mobility work
• Avoid aggressive twisting early

Strict bed rest is not recommended.

Rehab / PT Focus

Rehabilitation often emphasizes:

• Gluteus medius and maximus strengthening
• Core stabilization
• Pelvic control exercises
• Hip mobility
• Gradual load progression
• Gait retraining for runners

Consistency matters more than intensity.

Medications

Short-term use of NSAIDs may help with inflammation. These should be used cautiously and discussed with your clinician.

Injections / Procedures

In selected cases, diagnostic or therapeutic SI joint injections may be considered. These are typically reserved for persistent pain after structured rehab.

Surgery

SI joint fusion is rarely required and is considered only after extensive conservative management fails.

RETURN TO SPORT / ACTIVITY GUIDANCE

Early Phase

Focus: Calm irritation

Allowed activities:

• Walking on flat surfaces
• Gentle core activation
• Non-impact cardio

Mid Phase

Focus: Build strength and stability

Allowed activities:

• Progressive resistance training
• Controlled step-ups
• Light jogging if tolerated

Late Phase

Focus: Return to full activity

Allowed activities:

• Gradual return to running
• Agility drills
• Sport-specific loading

Common Mistakes

• Overstretching the SI joint
• Ignoring hip weakness
• Returning to high mileage too quickly
• Relying only on passive treatments
• Avoiding movement out of fear

Active adults in Lawrenceville and Plainsboro often see improvement once load is structured appropriately.

PREVENTION

• Strengthen glutes and core regularly
• Progress running mileage gradually
• Avoid prolonged asymmetrical loading
• Incorporate single-leg stability training
• Maintain hip mobility
• Address early flare-ups
• Cross-train to balance load

HOW WE HELP

At Princeton Sports and Family Medicine, P.C., evaluation begins with understanding the source of posterior hip and low back pain.

We focus on:

• Accurate diagnosis
• Differentiating SI joint from lumbar spine pain
• Load management
• Coordinated rehabilitation

At PSFM Wellness, Fuse Sports Performance and Princeton Sports and Family Medicine, P.C., our professionals specialize in sports medicine services, including sport specific evaluations and training to assess your risk for injury and assist in your performance goals.

FAQs

What does SI joint pain feel like?

It typically presents as one-sided low back or buttock pain that worsens with single-leg activities or prolonged standing.

Is SI joint pain the same as sciatica?

No. Sciatica usually involves nerve compression and radiating pain below the knee. SI pain is typically localized to the buttock and upper thigh.

Do I need imaging for SI joint pain?

Not usually at first. Diagnosis is clinical. Imaging may be considered if symptoms persist or red flags appear.

When can I run again?

Return to running depends on pain control, strength, and pelvic stability. Many runners begin gradual return once symptoms are stable.

Can pregnancy cause SI joint pain?

Yes. Hormonal ligament changes and pelvic load shifts increase risk during and after pregnancy.

Should I stretch my low back?

Aggressive stretching may worsen symptoms early. Strength and stability are often more important.

How long does SI joint pain last?

With structured rehab, many cases improve within weeks to a few months.

Is SI joint pain common in Princeton runners?

Yes. We frequently evaluate runners in Princeton and West Windsor with posterior hip pain linked to load progression and strength deficits.

Can sitting make it worse?

Yes. Prolonged sitting can increase pelvic stress and stiffness.

Will I need surgery?

Surgery is rare and considered only after extensive conservative treatment fails.

RELATED PAGES

• Hip Pain — https://www.princetonmedicine.com/contents/hip-pain
• Hip Arthritis — https://www.princetonmedicine.com/contents/hip-arthritis
• Hip Bursitis — https://www.princetonmedicine.com/contents/hip-bursitis
• Hip Labrum Tear — https://www.princetonmedicine.com/contents/hip-labrum-tear
• Tight Hip Flexors — https://www.princetonmedicine.com/contents/tight-hip-flexors
• Groin Strain — https://www.princetonmedicine.com/contents/groin-strain
• Hip Flexor Strain — https://www.princetonmedicine.com/contents/hip-flexor-strain
• Joint Pain — https://www.princetonmedicine.com/contents/joint-pain

If you are experiencing persistent low back or buttock pain in Princeton, Lawrenceville, or nearby communities, early evaluation can prevent chronic symptoms.

Contact Princeton Sports and Family Medicine, P.C., at our Lawrenceville office. Book an appointment online or call us directly to schedule your visit today.

Schedule here: https://www.princetonmedicine.com/schedule

Disclaimer

This content is educational only and not medical advice. If you experience severe symptoms or red flags, seek urgent medical evaluation immediately.