8 Best Treatments for SI Joint Pain in 2026

SI joint pain is one of the most underdiagnosed causes of chronic low back pain. The sacroiliac joint, where the base of the spine meets the pelvis, is responsible for 15-30% of cases involving persistent pain below the lower spine. If you have been dealing with deep, aching pain in your lower back or buttock that has not responded to standard treatments, the SI joint may be the source.

Treatment options have expanded significantly. In late 2025, a multispecialty consensus guideline endorsed by 21 medical societies, including the American Academy of Pain Medicine and the American Society of Regional Anesthesia, established the most comprehensive framework yet for diagnosing and managing SI joint complex pain. These guidelines emphasize starting with conservative therapies before considering procedures or surgery. Here are the eight treatments with the strongest evidence heading into 2026, organized from conservative approaches to procedural and surgical options.

Key Takeaways

• SI joint dysfunction accounts for 15-30% of chronic low back pain cases and is frequently underdiagnosed, especially in women over 40 and adults after lumbar fusion surgery.
• New 2025 consensus guidelines from 21 medical societies recommend starting with conservative therapies, including behavioral pain retraining and physical therapy, before considering injections or surgery.
• Brain-based behavioral approaches like CBT and pain reprocessing therapy address the neuroplastic component of chronic SI joint pain, with durable five-year results.
• Physical therapy focused on core stabilization and pelvic alignment is a foundational first-line treatment, supported by recent meta-analyses.
• SI joint fusion surgery, supported by two randomized controlled trials, is reserved for cases that fail all conservative and minimally invasive treatments.

What Is SI Joint Pain?

The sacroiliac joint connects the sacrum (the triangular bone at the base of the spine) to the ilium (the upper part of the pelvis) on each side. These joints absorb shock between the upper body and lower limbs during walking, bending, and lifting. When a sacroiliac joint becomes inflamed, too mobile, or too stiff, it can produce deep, localized pain in the lower back, buttock, hip, or upper thigh.

Common causes include:

• Degenerative changes from aging or arthritis
• Pregnancy and postpartum hormonal shifts
• Trauma or falls
• Repetitive stress from running or heavy lifting
• Prior lumbar fusion surgery (SI joint pain occurs in 23-43% post-fusion patients)
• Inflammatory conditions like ankylosing spondylitis

SI joint pain has a bimodal distribution, with higher prevalence in younger athletes and adults over 40, and it disproportionately affects women. Diagnosis can be challenging because symptoms overlap with lumbar disc disease, hip pathology, and piriformis syndrome. The 2025 consensus guidelines recommend a combination of focused physical examination with provocation tests and image-guided diagnostic injections to confirm the diagnosis.

When SI Joint Pain Becomes Chronic

When SI joint pain persists beyond three months, the nervous system itself can begin to change. This process, known as central sensitization, involves the brain and spinal cord amplifying pain signals even after the original tissue irritation has resolved. The pain alarm gets stuck. It fires without a proportionate physical cause, and it can spread to surrounding areas.

This is not imagined pain. It is a well-documented neurological process recognized by the International Association for the Study of Pain (IASP) as nociplastic pain. Central sensitization affects 10-40% of adults with chronic musculoskeletal conditions, including osteoarthritis and low back pain. Understanding this mechanism matters because it explains why treatments targeting only the joint itself sometimes fall short, and why approaches that address the brain's role in pain processing can produce lasting relief.

1. Behavioral Pain Retraining Programs

Who it may help most: Adults with chronic SI joint pain lasting 3+ months, especially when imaging shows no clear structural damage, when pain has spread beyond the original site, or when previous treatments have not produced lasting improvement.

Behavioral pain retraining targets the neuroplastic changes that keep chronic pain active after tissue healing. These programs use evidence-based techniques, including cognitive behavioral therapy (CBT), acceptance and commitment therapy (ACT), pain reprocessing therapy (PRT), and somatic tracking, to help patients retrain how the brain processes pain signals.

What the evidence shows

CBT reduces pain and disability for adults with chronic pain, with effects generally maintained at follow-up. A Cochrane review of 59 studies and over 5,000 participants confirmed these benefits. A 2025 systematic review and meta-analysis further validated CBT for musculoskeletal pain specifically.

PRT, which helps patients reconceptualize their pain as a reversible brain process rather than structural damage, showed striking results in a randomized clinical trial. Among adults with chronic back pain, 66% became pain-free after just four weeks of treatment, compared with fewer than 20% in the control group. A five-year follow-up found that more than 50% of those patients remained pain-free or nearly pain-free.

Cognitive functional therapy, a related approach that combines movement retraining with cognitive and lifestyle strategies, showed sustained three-year benefitsfor adults with chronic, disabling low back pain in the RESTORE trial.

How it works in practice

Sessions are typically delivered one-on-one with a trained coach or therapist, either in person or via telehealth. Treatment addresses fear of movement, emotional responses to pain, and the thought patterns that reinforce the pain cycle. Programs like Lin Health combine these modalities with app-based learning and guided exercises between sessions.

Scope note: PRT trial data comes from adults with chronic back pain, not SI joint pain specifically. The underlying mechanism, central sensitization, is common across chronic musculoskeletal conditions. CBT and cognitive functional therapy evidence spans broader chronic pain populations, including low back pain, which overlaps significantly with SI joint dysfunction.

2. Physical Therapy and Targeted Exercise

Who it may help most: Adults at all stages of SI joint pain, from acute to chronic. Recommended as first-line treatment in the 2025 consensus guidelines.

The 2025 multispecialty guidelines recommend at least six weeks of therapy including active exercise as part of initial conservative management. This is the backbone of SI joint treatment.

What the evidence shows

A 2023 meta-analysis found that physical therapy approaches, including combined exercise therapy, muscle energy technique (MET), and stabilization exercises, outperformed traditional approaches in reducing pain and disability in SI joint dysfunction. A 2025 review of RCTs confirmed that targeted interventions outperform general approaches, with growing evidence for clinical subgrouping to tailor treatment.

Key components of effective SI joint physical therapy

• Core stabilization exercises targeting the transversus abdominis, pelvic floor, and gluteal muscles
• Muscle energy technique (MET) to restore joint alignment
• Hip and pelvic mobility work to address stiffness patterns contributing to SI joint stress
• Gradual return to functional movement and progressive load-bearing activity

An emerging area within SI joint PT is clinical subgrouping, where treatment is tailored based on whether the dysfunction is primarily instability-dominant(too much joint movement) or pain-dominant (too little movement with excessive guarding). Ask your physical therapist about which pattern fits your presentation.

3. Mind-Body Movement

Who it may help most: Adults with chronic SI joint pain who respond well to gentle, sustained movement and body awareness practices. Also useful as a complement to physical therapy.

Mind-body exercise, including yoga, pilates, and tai chi, combines physical movement with breath work, mindfulness, and intentional body awareness. For SI joint pain, these practices can improve pelvic stability, reduce muscle guarding, and address the stress-pain connection.

A Cochrane review found that yoga improves back-related function to other forms of exercise at three months for chronic low back pain. Pilates has shown benefit for core activation and pain reduction in adults with chronic low back pain. While no large trials have tested these approaches specifically for SI joint dysfunction, reduces pain and disability in SI joint dysfunction, and the overlap between SI joint pain and non-specific low back pain is substantial.

Practical tips:

• Start with gentle, modified poses that avoid deep forward folds or extreme asymmetric positions
• Focus on symmetrical postures and pelvic stabilization
• Work with an instructor experienced with pelvic pain conditions
• Consistency matters more than intensity

4. Manual Therapy and Chiropractic Care

Who it may help most: Acute flare-ups and as a short-term adjunct to physical therapy and exercise programs.

Manual therapy includes spinal manipulation, mobilization, and soft-tissue techniques applied by chiropractors, osteopaths, or physical therapists. For SI joint dysfunction, the goal is to restore normal joint mechanics and reduce surrounding muscle tension.

The 2025 consensus guidelines include manual therapy within the conservative treatment framework. A 2025 systematic review found that mobilization with core exercises produced meaningful improvements in SI joint dysfunction. However, the evidence for manipulation alone, without complementary exercise, is limited for long-term outcomes.

What to know:

• Manual therapy tends to produce short-term relief that needs reinforcement with active exercise
• Multiple sessions are typically needed, often 6 to 12 visits
• Most effective when paired with a home exercise program
• Look for providers with specific training in pelvic mechanics

5. Medications

Who it may help most: Short-term symptom management during acute flares or as a bridge while other therapies take effect.

The 2025 consensus guidelines recommend analgesics for several weeks as part of initial conservative management. Medications are tools for managing symptoms while addressing the underlying cause through other therapies, not standalone long-term solutions.

Common options:

• NSAIDs (ibuprofen, naproxen) - first-line for inflammation-related SI joint pain
• Muscle relaxants - for cases with significant muscle guarding or spasm
• Nerve membrane stabilizers (gabapentin, pregabalin) - for pain with neuropathic features
• Topical analgesics - localized relief with fewer systemic side effects

Important considerations:

• NSAIDs carry gastrointestinal and cardiovascular risks with long-term use
• Opioids are generally not recommended for chronic SI joint pain
• Medications work most effectively as part of a multimodal treatment plan

6. SI Joint Injections

Who it may help most: Adults with moderate-to-severe SI joint pain that has not responded to 6+ weeks of conservative therapy, or as a diagnostic tool to confirm the pain source.

Corticosteroid injections deliver anti-inflammatory medication directly into or around the SI joint, typically guided by fluoroscopy or ultrasound imaging. They serve a dual purpose: diagnostic confirmation and short-term pain relief.

What the evidence shows

Evidence for SI joint corticosteroid injections is mixed. Some studies report relief lasting six months, while systematic reviews of clinical trials have found insufficient long-term evidence. A 2024 meta-analysis comparing injections to radiofrequency ablation suggested that RFA may offer superior long-term relief.

The 2025 consensus guidelines position injections within the stepped treatment pathway, primarily as diagnostic confirmation and as a short-term bridge while other treatments take effect.

What to expect:

• Performed as an outpatient procedure under image guidance
• Relief, when it occurs, typically begins within a few days
• Duration of benefit varies widely, from weeks to months
• Most guidelines recommend limiting injections to 3 to 4 per year

7. Radiofrequency Ablation

Who it may help most: Adults with chronic SI joint pain confirmed by positive diagnostic injections who have not improved with physical therapy and conservative care.

Radiofrequency ablation (RFA) uses targeted heat to disrupt the nerves transmitting pain signals from the SI joint. Both conventional and cooled radiofrequency techniques are available.

A systematic review and meta-analysis found Level III evidence supporting radiofrequency neurotomy for SI joint pain, with improvements in pain scores and function. Cooled RFA showed moderate evidence for pain reduction at three months with no serious complications reported.

Important caveats:

• Evidence remains thin and mixed, with limited high-quality randomized controlled trials
• Some US insurers, including Medicare in certain regions, do not cover SI joint RFA
• Nerves can regenerate over 6 to 18 months, so pain may return and repeat procedures may be needed
• Success depends on accurate diagnostic injection response beforehand

8. SI Joint Fusion Surgery

Who it may help most: Adults with severe, debilitating SI joint pain that has failed all conservative and minimally invasive treatments over at least 6 to 12 months.

Minimally invasive SI joint fusion stabilizes the joint by placing implants that promote bone growth across the joint space. It is the most definitive option on this list, and the most invasive.

There are now 40 peer-reviewed publications supporting positive outcomes for minimally invasive SI joint fusion, including two randomized controlled trials. A multicenter study found that average pain scores improved from 7.5 at baseline to 2.6 at 3.7-year follow-up, a clinically meaningful 4.8-point drop.

What to know:

• Surgery is typically a last resort after failure of physical therapy, behavioral approaches, injections, and RFA
• The procedure takes about an hour, with 4 to 6 weeks of activity restriction during recovery
• Complication rates are low but include nerve irritation, implant malpositioning, and adjacent-segment changes
• The 2025 consensus guidelines include fusion in the treatment algorithm for refractory cases

How Lin Health Helps with SI Joint Pain

When SI joint pain becomes chronic, the problem often extends beyond the joint itself. Research on nociplastic pain shows that the brain and nervous system can amplify and sustain pain signals long after the initial injury or inflammation has resolved. The pain alarm gets stuck, firing without a proportionate physical cause. This is where Lin Health's approach fits in.

Lin Health's program is based on findings from neuroplastic pain research, applying techniques drawn from pain reprocessing therapy, CBT, ACT, and somatic tracking. Working one-on-one with a trained recovery coach, patients learn to address the fear, stress, and thought patterns that keep chronic pain active, retraining the nervous system to release the stuck pain alarm.

What the program includes:

• Weekly one-on-one sessions with a recovery coach via telehealth
• App-based learning modules and between-session exercises
• Techniques drawn from evidence-based CBT approaches, ACT, PRT, and somatic tracking
• A program specialized in chronic pain conditions, not general mental health

Lin Health is covered by most major insurance plans in Colorado, Texas, Florida, California, and New York, with coverage available in additional states. Most patients pay nothing out of pocket. Wait times are short, often with a same-day callback after signup.

If SI joint pain has persisted despite physical therapy, injections, or medications, a brain-based approach may be worth exploring alongside your existing care. Most patients pay nothing out of pocket. Check your eligibility.

FAQ

What causes SI joint pain?

SI joint pain typically results from inflammation, excessive or restricted joint mobility, or degeneration. Common causes include arthritis, pregnancy, trauma, repetitive stress from running or lifting, and prior lumbar fusion surgery. In chronic cases, central sensitization may amplify pain signals beyond the original source.

How is SI joint pain diagnosed?

Diagnosis involves physical examination using provocation tests, with at least three positive tests recommended. Image-guided diagnostic injections confirm the pain source. The 2025 consensus guidelines emphasize that imaging alone, such as X-rays or MRI, cannot reliably confirm SI joint pain.

Can SI joint pain go away on its own?

Acute SI joint pain from minor strain or pregnancy-related changes often resolves within weeks to months. Chronic SI joint pain lasting more than three months typically requires treatment. Early intervention with physical therapy and behavioral approaches may help prevent the transition from acute to chronic.

Is SI joint pain the same as sciatica?

No. Sciatica involves nerve compression in the lumbar spine and typically radiates past the knee. SI joint pain usually stays in the lower back, buttock, and upper thigh, though it can sometimes refer into the groin or lower leg. Different sources, different treatment paths.

What is the most effective treatment for chronic SI joint pain?

The 2025 consensus guidelines recommend a stepped approach starting with conservative therapies. For chronic SI joint pain, a combination of behavioral pain retraining, physical therapy, and lifestyle modification has strong evidence for long-term outcomes. Injections and surgery are reserved for cases that do not respond to conservative care.

Does insurance cover SI joint pain treatment?

Most insurance plans cover physical therapy, medications, injections, and surgery for diagnosed SI joint pain. Behavioral pain retraining programs like Lin Health are covered by major insurers in select states. Coverage for radiofrequency ablation varies by insurer and region.

How long does it take to recover from SI joint pain?

Acute cases may resolve in 4 to 8 weeks with physical therapy. Chronic SI joint pain may require 3 to 6 months of multimodal treatment. Brain-based approaches like PRT have shown durable results, with 50% remained pain-free at five years in one clinical trial.

Can exercise make SI joint pain worse?

Certain movements can aggravate SI joint pain, particularly asymmetric exercises, heavy deadlifts, or deep lunging. A physical therapist can identify which activities to modify. Avoiding all exercise typically worsens chronic SI joint pain by increasing deconditioning and reinforcing fear of movement.

This article is for informational purposes only and is not medical advice. It does not replace the guidance of a qualified healthcare provider. Consult your physician before starting, stopping, or changing any treatment plan.

Last reviewed: September 2026