Sacroiliac Joint Manipulation for Low Back and Radicular Pain

Sacroiliac joint manipulation for low back and radicular pain is receiving renewed attention following a 2026 observational study of 100 patients. The study reported substantial reductions in pain and disability after a standardized sacroiliac joint manipulation protocol. However, the findings need to be interpreted carefully: the study had no control group, involved a specifically selected patient population, and cannot establish that manipulation itself caused the observed improvements.

For chiropractors and other clinicians managing low back and leg complaints, the more useful question is therefore not simply whether sacroiliac joint manipulation “works.” It is which patients may have SIJ-mediated pain, how confidently that diagnosis can be made, and where manipulation fits within a broader evidence-informed clinical approach.

Video Overview: What Does the Research Show?

This ChiroSecure Research Update examines a 2026 single-center cohort study involving 100 adults with lumbosacral and/or radicular leg pain attributed to sacroiliac joint dysfunction. Patients were selected using imaging plus multiple SIJ provocation findings and received up to three standardized manipulation sessions at seven-day intervals.

The study reported marked improvements in both numerical pain ratings and Oswestry Disability Index scores. Those results are clinically interesting, but they should be viewed as observational outcome data rather than proof of treatment efficacy.

Watch the video above for the ChiroSecure presentation of the research.

What Did the 100-Patient Study Find?

The featured study by Kowalczyk and colleagues evaluated 100 consecutive adults with lumbosacral and/or leg pain attributed to SIJ dysfunction. The population was 73% women, with a mean age of approximately 49 years. Patients had cross-sectional imaging and at least three positive SIJ provocation tests before inclusion.

All participants received the same general treatment protocol, consisting of up to three SIJ manipulation sessions separated by seven days. The same physiotherapist delivered the interventions. Pain was measured using the Numerical Rating Scale (NRS), while disability was assessed with the Oswestry Disability Index (ODI).

Outcome	Baseline	After Treatment	Follow-Up
Median NRS pain	8 (IQR 7–9)	1 after first manipulation; 0 after second and third	0 (IQR 0–2) at 3 months
Median ODI	30 (IQR 25–35)	—	7 (IQR 6–9) at 3 months

The repeated NRS analysis was statistically significant (Friedman p < 0.001), and the ODI improvement was also statistically significant (p < 0.001). The study therefore provides a useful pragmatic signal that a carefully selected group of patients with suspected SIJ-mediated symptoms experienced substantial improvement during the treatment period and through three months.

However, statistical significance is not the same thing as proof of causation. The study did not randomly assign patients to manipulation or a comparison group. Consequently, natural recovery, regression to the mean, nonspecific treatment effects, concurrent care, patient expectations, or other factors could have contributed to the results.

What Were the Most Common Clinical Findings?

The researchers reported several positive SIJ findings among the participants. The Mennell sign was reported as present in all participants, while thigh thrust, the Mennell provocation test, and Yeoman’s test were also frequently positive.

• Mennell sign: 100%
• Thigh thrust: 89%
• Mennell provocation test: 81%
• Yeoman’s test: 52%

These findings illustrate an important point about SIJ assessment: clinicians generally should not base a diagnosis on one isolated maneuver. Earlier diagnostic research has shown that combinations of provocation tests can be more useful than individual tests, although SIJ pain remains diagnostically challenging. :contentReference[oaicite:1]{index=1}

Can Sacroiliac Joint Pain Mimic Radiculopathy?

Yes. SIJ-related pain can produce leg symptoms that resemble sciatica or radiculopathy. That does not mean that every patient with pain extending into the leg has SIJ-mediated pain, and it does not mean that SIJ manipulation should substitute for a neurological or spinal evaluation when radiculopathy is suspected.

A study specifically comparing SIJ-related sciatica-like symptoms with nerve-root compression found that SIJ-related leg pain can clinically mimic radiculopathy. The authors emphasized thorough examination of the lumbar spine, SI joints, and hips, with additional testing when necessary to exclude other causes. :contentReference[oaicite:2]{index=2}

Why Is the Diagnosis of SIJ Pain Difficult?

The sacroiliac joint is a plausible pain generator, but its diagnosis is more complicated than identifying a single “misaligned” or “blocked” joint.

SIJ-region symptoms overlap with pain generated by the lumbar spine, hip, surrounding soft tissues, and other structures. Imaging can be useful for identifying or excluding particular conditions, but routine imaging findings alone do not establish mechanical SIJ pain. Reviews of SIJ diagnosis have emphasized the limitations of relying on a single history item, physical finding, or imaging feature. :contentReference[oaicite:3]{index=3}

For this reason, a more defensible clinical approach is to integrate:

• Patient history and symptom distribution
• Lumbar spine examination
• Neurological examination when leg symptoms are present
• Hip examination when appropriate
• A cluster of SIJ pain-provocation tests
• Consideration of trauma, inflammatory disease, infection, malignancy, fracture, and other red flags
• Imaging or referral when the clinical presentation warrants it

Does SIJ Manipulation Have Evidence Beyond This Study?

Yes, but the broader evidence needs to be characterized accurately.

A 2026 systematic review of lumbar roll and modified SIMS manipulation techniques identified nine eligible studies involving adults with SIJ dysfunction or related lumbopelvic presentations. Most studies reported short-term improvements in pain and disability. However, the review also identified substantial heterogeneity, small samples, short follow-up periods, inconsistent technique descriptions, and limited direct comparisons between specific manipulation techniques. The authors characterized the overall certainty as limited and called for higher-quality comparative research. :contentReference[oaicite:4]{index=4}

A separate 2026 systematic review of physiotherapy approaches for SIJ dysfunction similarly concluded that manipulation and other conservative approaches can produce clinical improvements, while noting uncertainty about the relative effectiveness of different interventions and the limitations of the available trials. :contentReference[oaicite:5]{index=5}

More broadly, current evidence concerning manual therapy for chronic nonspecific low back pain suggests that manual therapy can provide short-term improvements in pain and disability, although effects tend to diminish over time and the evidence is heterogeneous. :contentReference[oaicite:6]{index=6}

What Does This Mean for Chiropractic Clinical Practice?

The most defensible interpretation is that SIJ manipulation can be considered as one component of conservative care for appropriately selected patients, rather than as a universally indicated treatment for low back or radicular pain.

The 100-patient cohort is particularly relevant because the researchers attempted to identify a specific subgroup: patients with symptoms attributed to the SIJ and multiple positive clinical findings. That is very different from treating every patient with low back pain as though the SIJ were the primary pain generator.

A practical evidence-informed workflow may include:

1. Screen for serious pathology. Identify red flags and indications for referral or additional investigation before proceeding with routine conservative treatment.
2. Clarify the symptom pattern. Determine whether the complaint is localized SIJ-region pain, referred leg pain, or a pattern more consistent with nerve-root involvement.
3. Perform a regional examination. Assess the lumbar spine, neurological system when indicated, SIJ region, hips, and relevant surrounding structures.
4. Use a cluster rather than a single SIJ test. Multiple concordant provocation findings are generally more informative than one positive maneuver.
5. Select treatment based on the clinical presentation. Manipulation may be appropriate for some patients, while exercise, education, graded activity, other manual techniques, referral, or combined approaches may be more appropriate for others.
6. Monitor response objectively. Pain, function, disability, neurological status, and patient-reported progress should guide continued care.
7. Reassess when the expected response does not occur. Persistent, worsening, or changing symptoms should prompt reconsideration of the working diagnosis.

Should SIJ Manipulation Be Combined With Exercise?

The broader low-back-pain literature supports thinking beyond a single treatment modality. A 2025 systematic review found that adding manual therapy to exercise produced additional short-term improvements in pain, function, or disability in most of the included studies, although not every study showed a benefit. :contentReference[oaicite:7]{index=7}

At the same time, a 2026 systematic review and meta-analysis found that adding manual therapy to therapeutic exercise did not produce a clear additional short-term pain benefit compared with exercise alone, although improvements in disability were observed. The certainty of evidence varied, and substantial heterogeneity remained. :contentReference[oaicite:8]{index=8}

These apparently different findings reinforce an important clinical principle: the evidence does not justify treating manipulation and exercise as mutually exclusive choices or assuming that one modality is universally superior. Treatment selection should be individualized according to the patient’s presentation, goals, response, and clinical risk profile.

What Are the Limitations of the 100-Patient Study?

The study is clinically interesting, but several limitations should temper interpretation.

• No randomized control group: the design cannot determine whether manipulation caused the improvement.
• Single center: results may not generalize to other clinical settings or patient populations.
• One treating physiotherapist: this improves protocol consistency but limits generalizability across clinicians and techniques.
• Selected population: participants had imaging and multiple positive SIJ findings, so the findings should not automatically be generalized to all patients with low back pain.
• Short follow-up: outcomes were reported through three months, leaving longer-term effectiveness uncertain.
• Diagnostic complexity: SIJ-related pain and true radiculopathy can overlap clinically.
• Technique specificity: the results apply to the protocol studied and should not automatically be generalized to every form of SIJ manipulation.

The investigators themselves called for randomized, assessor-blinded research with longer follow-up. :contentReference[oaicite:9]{index=9}

What About Safety?

Safety should be part of the clinical decision rather than an afterthought. Research on spinal manipulation has generally found that reported adverse events are often transient and musculoskeletal in nature, but adverse-event reporting in clinical trials remains inconsistent. A 2023 systematic review found that only 61% of included randomized trials reported adverse events, and only a minority clearly defined what constituted an adverse event. No serious adverse events were reported in the trials included in that review, but the authors emphasized the limitations of current reporting practices. :contentReference[oaicite:10]{index=10}

More recent research continues to identify incomplete adverse-event reporting as an important evidence gap. A 2026 scoping review found that only 28% of included randomized trials actually reported the occurrence of adverse events, despite more than half mentioning or collecting them. :contentReference[oaicite:11]{index=11}

For clinicians, the practical implication is straightforward: appropriate screening, informed consent, technique selection, monitoring, documentation, and reassessment remain essential.

When Should a Patient With Leg Pain Be Referred or Further Evaluated?

Leg symptoms require particular attention because SIJ-related referred pain can resemble radicular pain, while genuine nerve-root pathology can require a different diagnostic and management pathway.

Progressive neurological deficits, suspected cauda equina syndrome, significant trauma, suspected malignancy or infection, fracture risk, or other serious findings warrant appropriate escalation rather than routine manipulation. Imaging is not automatically required for uncomplicated acute low back pain with or without radiculopathy, but imaging becomes more appropriate when serious pathology is suspected or when persistent radicular symptoms are being evaluated for possible intervention. :contentReference[oaicite:12]{index=12}

The clinical objective should therefore be accurate triage before treatment selection. Manipulation should not be used to avoid investigating a presentation that warrants further evaluation.

Key Takeaways for Chiropractors

• A 2026 cohort of 100 carefully selected patients reported large improvements in pain and disability following standardized SIJ manipulation.
• The study provides encouraging observational evidence, but it does not establish causation.
• SIJ-related pain can produce leg symptoms that mimic sciatica or radiculopathy.
• SIJ diagnosis should not rest on one physical examination maneuver.
• Clusters of provocation tests can contribute to clinical decision-making, but diagnostic uncertainty remains.
• Manipulation is best considered within a broader conservative-care strategy rather than as a stand-alone answer for every patient.
• Exercise, education, activity modification, manual therapy, and referral should be considered according to the patient’s presentation and response.
• Red-flag screening and neurological assessment remain important when leg symptoms are present.
• Longer-term and higher-quality comparative research is still needed to determine which patients are most likely to benefit from SIJ manipulation.

Frequently Asked Questions

Can sacroiliac joint manipulation help low back pain?

Current evidence suggests that SIJ-directed manipulation can improve pain and disability in some patients with suspected SIJ dysfunction, particularly in the short term. However, the evidence remains heterogeneous, and the 2026 100-patient cohort was observational rather than randomized.

Can SIJ dysfunction cause pain down the leg?

Yes. SIJ-related pain can extend into the lower extremity and can clinically resemble sciatica. However, leg pain should not automatically be attributed to the SIJ because lumbar nerve-root disorders and other conditions can produce similar symptoms.

Does a positive SIJ test prove that the SIJ is the pain generator?

No. Individual SIJ provocation tests have limitations. A cluster of concordant findings is generally more useful than relying on a single maneuver, and the complete clinical picture should guide diagnosis.

Is SIJ manipulation appropriate for true radiculopathy?

Not automatically. A confirmed or strongly suspected nerve-root disorder requires appropriate neurological assessment and differential diagnosis. SIJ-related leg pain can mimic radiculopathy, but that does not make SIJ manipulation a substitute for evaluation of lumbar or neurological pathology.

What did the 2026 study actually prove?

It demonstrated an association between a standardized SIJ manipulation protocol and substantial improvements in pain and disability in a selected group of patients. Because the study lacked randomization and a control group, it did not prove that manipulation caused those improvements.

Should SIJ manipulation be used alone?

Not necessarily. Contemporary low-back-pain management commonly uses multimodal care. Depending on the patient, manipulation may be combined with exercise, education, activity modification, or other appropriate conservative interventions.

Conclusion

The 2026 100-patient cohort adds useful contemporary data to the discussion of sacroiliac joint manipulation for low back and leg pain. The magnitude and speed of improvement reported in the study are noteworthy. Nevertheless, the appropriate clinical conclusion is measured rather than absolute.

SIJ manipulation may be a useful component of conservative care for appropriately selected patients, but diagnosis and patient selection remain more important than the technique itself. In patients with leg symptoms, clinicians should distinguish SIJ-related referred pain from true radiculopathy and other spinal, hip, neurological, inflammatory, traumatic, or systemic conditions.

The strongest path forward is continued research that combines rigorous diagnosis, appropriate control groups, standardized treatment protocols, meaningful functional outcomes, longer follow-up, and transparent adverse-event reporting.

References

1. Kowalczyk P, Niewodniczy M, Szmyd B, Wiśniewski K, Jaskólski DJ. Sacroiliac joint manipulation for low back and radicular pain: outcomes in a 100-patient single-center cohort. Neurologia i Neurochirurgia Polska. 2026. doi:10.5603/pjnns.110751.
2. Islam F, Ahmed U, McCarthy C, Shabbir M. A systematic review of current evidence on clinical outcomes of lumbar roll and modified SIMS manipulation techniques in sacroiliac joint dysfunction. Archives of Physiotherapy. 2026;16:149–157. doi:10.33393/aop.2026.3903.
3. Kowalczyk P, Niewodniczy M, Szmyd B, Zaczkowski K, Wiśniewski K, Jaskólski DJ. Effectiveness of Physiotherapy Techniques in Sacroiliac Joint Dysfunction: A Systematic Review. Applied Sciences. 2026;16(15):7787.
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5. Visser LH, Nijssen PGN, Tijssen CC, van Middendorp JJ, Schieving J. Sciatica-like symptoms and the sacroiliac joint: clinical features and differential diagnosis. European Spine Journal. 2013;22(7):1657–1664.
6. Waldman LE, Maluli I, Moon CN, Skalski MR, Matcuk GR. Sacroiliac joint dysfunction: anatomy, pathophysiology, differential diagnosis, and treatment approaches. Skeletal Radiology. 2024.
7. Conde-Vázquez O, García-Cancela J, Navarro-Ledesma S, Pruimboom L. The effectiveness of manual therapy in people with chronic non-specific low back pain: an umbrella review with meta-analysis. Annals of Physical and Rehabilitation Medicine. 2026;69(2):102049.
8. Narenthiran P, Granville Smith I, Williams FMK. Does the addition of manual therapy to exercise therapy improve pain and disability outcomes in chronic low back pain: A systematic review. Journal of Bodywork & Movement Therapies. 2025;42:146–152.
9. Dos Santos ECS, et al. Effectiveness of adding manual therapy to exercise for pain and disability in chronic non-specific low back pain: A systematic review and meta-analysis. Musculoskeletal Science and Practice. 2026;82:103508.
10. Funabashi M, et al. Adverse event reporting in randomized trials of spinal manipulative therapy: a scoping review of practices and characteristics. Chiropractic & Manual Therapies. 2026.