Spinal Manipulative Therapy for Acute Neck Pain: What the Evidence Shows

Spinal manipulative therapy (SMT) is commonly used to manage neck pain. But how strong is the evidence when the problem is acute?

A 2025 systematic review and meta-analysis provides a useful update. The researchers evaluated eight randomized controlled trials involving 965 patients with acute neck pain or acute whiplash-related presentations. Overall, the trials found that SMT reduced pain intensity, improved cervical range of motion, and reduced disability compared with control interventions.

However, clinicians should interpret these findings carefully. The included studies used different manipulation techniques, treatment schedules, comparison interventions, and patient populations. Moreover, the authors rated the certainty of evidence from low to very low for the main outcomes.

This ChiroSecure Research Update therefore reviews the findings and places them in the broader context of clinical guidelines, patient assessment, multimodal care, and safety.

Watch the ChiroSecure Research Update

Video overview: This Research Update examines evidence concerning spinal manipulative therapy for acute neck pain. In particular, it considers pain, cervical range of motion, disability, and reported adverse events.

Transcript: No downloadable transcript appears on the current version of the existing page. Therefore, if an original transcript asset exists in the site’s media library or YouTube workflow, restore it here before publication.

What does the research say about spinal manipulative therapy for acute neck pain?

The most directly relevant evidence comes from a 2025 systematic review and meta-analysis by Diao and colleagues. The researchers searched PubMed, Embase, Web of Science, PEDro, and the Cochrane Library for randomized controlled trials.

The search identified 1,882 records. After removing duplicates and screening the records, the researchers included eight randomized controlled trials. Together, those trials involved 965 participants.

The review defined acute neck pain as symptoms lasting less than three months. In addition, the included evidence covered patients with acute whiplash injuries. The researchers examined SMT involving the cervical spine, thoracic spine, first rib, or other spinal regions. Furthermore, some trials used SMT alone, while others combined manipulation with additional therapy.

This distinction matters. The evidence does not evaluate one standardized chiropractic technique delivered in one standardized way. Instead, it evaluates a group of spinal manipulative approaches across different clinical settings.

What did the systematic review find?

The researchers evaluated three major outcomes: pain intensity, cervical range of motion, and disability. Overall, the findings favored SMT across these outcomes.

Pain intensity

Seven studies involving 821 participants contributed data to the pain analysis.

The pooled analysis favored SMT over control interventions, with a mean difference of -1.53 points (95% CI, -2.22 to -0.83; p < 0.001).

Therefore, the analysis indicates a statistically significant reduction in pain. However, the analysis also showed substantial heterogeneity, with an I² of 95%.

High heterogeneity means that the individual studies produced substantially different estimates of treatment effect. For example, patient populations, manipulation techniques, treatment schedules, concurrent therapies, and comparison groups may have contributed to that variability.

Consequently, the finding is encouraging, but clinicians should not assume that every patient with acute neck pain will experience the same magnitude of improvement.

Cervical range of motion

Three studies involving 271 participants evaluated cervical range of motion.

The pooled findings favored SMT for all measured directions. Specifically, the analysis found improvements of approximately 11 degrees for flexion, 10 degrees for extension, 7 to 8 degrees for lateral flexion, and approximately 8 to 9 degrees for cervical rotation.

Heterogeneity varied by movement. For example, flexion and extension showed little statistical heterogeneity, whereas lateral flexion and rotation showed greater variability between studies.

In clinical practice, this finding suggests that SMT may improve measurable cervical mobility in patients with acute neck pain. Nevertheless, clinicians should interpret range-of-motion changes alongside pain, function, neurological findings, patient goals, and the underlying clinical presentation.

Disability

Four studies assessed disability with the Neck Disability Index or Northwick Park Neck Pain Questionnaire. Together, these studies included 295 participants.

The pooled analysis favored SMT, with a mean difference of -6.20 points (95% CI, -9.81 to -2.59; p = 0.0008).

However, the disability analysis also showed substantial heterogeneity, with an I² of 89%. Therefore, clinicians should view the result as supportive evidence rather than a precise prediction of an individual patient’s response.

How strong is the evidence?

This question represents one of the most important qualifications to the study’s positive findings.

The researchers used both the PEDro scale and the GRADE framework to assess the evidence. The eight trials received PEDro scores ranging from 4 to 9, with a mean score of 6.38.

Only one trial received an excellent-quality rating. Meanwhile, four trials received good-quality ratings, and three received fair-quality ratings. In addition, only one trial blinded both participants and therapists.

More importantly, the authors rated the overall certainty of evidence from low to very low. They cited substantial heterogeneity, small sample sizes for some outcomes, indirectness, imprecision, and concerns about risk of bias.

This distinction remains essential. A statistically significant result does not automatically provide high-certainty evidence. Similarly, a favorable pooled estimate does not establish a precise treatment effect for every patient.

In practical terms:

• The pooled results favored SMT.
• The evidence does not establish a highly precise treatment effect.
• The studies used different SMT approaches and treatment protocols.
• Long-term outcomes remain less certain.

Therefore, evidence-based practice requires clinicians to consider both the direction of the findings and the certainty of those findings.

Was spinal manipulative therapy safe in these trials?

The 2025 review found no serious adverse events among the included randomized controlled trials. That result provides some reassurance. However, it does not prove that serious adverse events can never occur.

For example, one trial reported a transient unusual arm sensation after manipulation, and the symptom resolved without intervention. In another study, approximately 40% of participants receiving SMT reported mild adverse events, primarily musculoskeletal pain.

Importantly, the review did not identify serious complications in the included trials. Nevertheless, randomized controlled trials involving hundreds of participants cannot reliably detect extremely rare adverse events.

Therefore, clinicians should describe the finding accurately: the included trials reported no serious adverse events. They should not convert that finding into an absolute claim that cervical manipulation carries no risk.

Why does patient assessment matter before manipulation?

The evidence applies to the populations that researchers studied. Therefore, clinicians should not assume that every patient who presents with neck pain represents an appropriate candidate for spinal manipulation.

First, clinical assessment should establish whether the presentation fits an uncomplicated mechanical or musculoskeletal disorder. Next, clinicians should identify findings that might require treatment modification, additional investigation, co-management, or referral.

This consideration becomes especially important when clinicians consider cervical manipulation. A 2025 systematic review of international neck-pain clinical practice guidelines found that high-quality guidelines consistently supported manipulation or mobilization, with or without exercise.

However, the same review found inconsistent guidance for identifying patients who might face vascular complications. Specifically, only eight of 19 included guidelines described screening for risk factors, and only two provided screening guidance that met the authors’ criteria for both presence and completeness.

As a result, the evidence supports a broader clinical principle: treatment selection should follow assessment and clinical reasoning, not replace them.

Should spinal manipulation be used alone or as part of multimodal care?

Clinical guidelines generally provide stronger support for multimodal approaches than for treating neck pain as though one intervention will work for every patient.

For example, earlier chiropractic guidelines recommended manipulation or mobilization in combination with other modalities for acute neck pain. Similarly, the 2016 clinical practice guideline for neck pain-associated disorders and whiplash-associated disorders recommended manipulation or mobilization, range-of-motion exercise, and multimodal manual therapy for several recent-onset neck-pain presentations.

More recently, guideline reviews have continued to emphasize individualized, multimodal management.

For chiropractors, this means that SMT can serve as one component of a broader management plan. Depending on the patient’s presentation, that plan may include:

• Patient education and reassurance when appropriate.
• Appropriate cervical range-of-motion activity.
• Strengthening or endurance exercise based on the patient’s impairments.
• Manual therapy or mobilization when clinically indicated.
• Self-management strategies.
• Reassessment of symptoms and functional response.
• Referral or co-management when the presentation warrants it.

Ultimately, the appropriate combination depends on the patient’s clinical findings, goals, preferences, risk factors, and response to care.

What does the evidence mean for chiropractors?

The 2025 meta-analysis strengthens the evidence base for considering SMT in acute neck pain. However, it does not establish a universal treatment protocol or demonstrate that manipulation suits every patient.

Several practical conclusions follow.

1. SMT has supportive evidence for acute neck pain. The pooled trials found improvements in pain, cervical range of motion, and disability.
2. The evidence remains heterogeneous. The interventions, patient populations, comparators, and treatment schedules varied substantially.
3. Evidence certainty matters. The GRADE certainty ranged from low to very low for the major outcomes.
4. Multimodal care remains important. Current guideline evidence generally supports combining manual interventions with exercise, education, or other appropriate conservative strategies.
5. Clinical assessment comes first. Clinicians should apply research findings to patients whose presentations reasonably resemble the studied populations.
6. Safety requires more than counting adverse events. Patient selection, risk assessment, informed consent, appropriate technique selection, and recognition of referral indications remain important.
7. Reassessment is part of evidence-based care. The patient’s response should help determine whether the clinician should continue, modify, or discontinue the management plan.

What are the main limitations of the evidence?

The systematic review has several strengths. For example, the researchers conducted a broad database search, evaluated randomized controlled trials, used formal methodological assessment, and applied GRADE.

However, the limitations also matter clinically.

• The included studies used different SMT techniques.
• Some interventions targeted the cervical spine, while others targeted the thoracic spine, first rib, or other spinal regions.
• Some studies evaluated SMT alone, while others combined SMT with additional treatment.
• Treatment frequency ranged from one to 15 sessions.
• Treatment periods did not exceed four weeks in the included trials.
• Many studies lacked participant or therapist blinding.
• Long-term effects received limited evaluation.
• Several pooled outcomes showed substantial statistical heterogeneity.
• The certainty of evidence remained low or very low.

These limitations do not erase the favorable findings. Instead, they define how confidently clinicians can translate those findings into expectations for individual patients.

What should clinicians take away from the research?

The strongest interpretation is not simply that “spinal manipulation works for neck pain.” Instead, randomized evidence supports SMT as a treatment option for appropriately assessed patients with acute neck pain. At the same time, uncertainty remains about the size of the effect and the optimal technique, dosage, and treatment combination.

The 2025 evidence therefore fits reasonably well with the broader direction of neck-pain clinical guidelines. In general, clinicians should use evidence to inform treatment selection, combine interventions when appropriate, assess risk, consider patient preferences, and continually reassess the clinical response.

For chiropractors, this distinction matters. Evidence-based practice does not mean automatically applying a research finding. Rather, it means integrating research evidence, clinical expertise, patient preferences, examination findings, and ongoing reassessment.

Frequently Asked Questions

Does spinal manipulative therapy help acute neck pain?

Current randomized-trial evidence suggests that SMT can reduce pain and disability and improve cervical range of motion in people with acute neck pain. However, the certainty of the evidence remains low to very low, and the individual studies showed substantial differences.

How many patients did the 2025 review include?

The systematic review included eight randomized controlled trials involving a total of 965 participants.

Did spinal manipulation improve range of motion?

Yes. Three studies involving 271 participants reported improvements across measured cervical movements, including flexion, extension, lateral flexion, and rotation.

Was spinal manipulation safe in the studies?

No serious adverse events occurred in the eight included trials. However, some participants experienced mild or transient adverse effects. Because rare serious events are difficult to detect in randomized trials, clinicians should not interpret these findings as proof that serious complications can never occur.

Is spinal manipulation recommended as a stand-alone treatment?

Generally, the broader guideline literature supports manipulation or mobilization as part of individualized, multimodal care. Therefore, clinicians should not assume that one technique should serve as the sole treatment for every patient.

Does this evidence apply to every patient with neck pain?

No. The research involved defined study populations, including adults with acute neck pain and some patients with whiplash-related presentations. Therefore, clinicians should determine whether an individual patient’s presentation supports conservative management before applying evidence from these trials.

Conclusion

The evidence for spinal manipulative therapy in acute neck pain has become more substantial. However, clinicians should also interpret that evidence carefully.

A 2025 systematic review and meta-analysis of eight randomized controlled trials found that SMT improved pain, cervical range of motion, and disability compared with control interventions. In addition, the included trials reported no serious adverse events.

At the same time, substantial heterogeneity, methodological limitations, limited long-term data, and low-to-very-low certainty of evidence prevent a simple conclusion that SMT will produce a predictable effect for every patient.

For clinical practice, the most defensible approach therefore remains individualized and evidence-informed. Clinicians should assess the patient carefully, identify risk factors and indications for referral, select appropriate interventions, incorporate exercise and education when indicated, obtain informed consent, and reassess the patient’s response.

References

1. Diao Y, Liu Y, Pan J, et al. Efficacy and safety of spinal manipulative therapy in the management of acute neck pain: a systematic review and meta-analysis. Systematic Reviews. 2025;14:97. doi:10.1186/s13643-025-02855-7.
2. Chaibi A, Stavem K, Russell MB. Spinal Manipulative Therapy for Acute Neck Pain: A Systematic Review and Meta-Analysis of Randomised Controlled Trials. Journal of Clinical Medicine. 2021;10(21):5011.
3. Bryans R, Decina P, Descarreaux M, et al. Evidence-based guidelines for the chiropractic treatment of adults with neck pain. Journal of Manipulative & Physiological Therapeutics. 2014;37(1):42-63.
4. Bussières AE, Stewart G, Al-Zoubi F, et al. The Treatment of Neck Pain-Associated Disorders and Whiplash-Associated Disorders: A Clinical Practice Guideline. Journal of Manipulative & Physiological Therapeutics. 2016;39(8):523-564.e27.
5. Whalen W, Farabaugh RJ, Hawk C, et al. Best-Practice Recommendations for Chiropractic Management of Patients With Neck Pain. Journal of Manipulative & Physiological Therapeutics. 2019;42(9):635-650.
6. Peters R, Hallegraeff J, Koes B, van Trijffel E. Recommendations for Mobilization and Manipulation Treatment and Screening for Vascular Complications in Clinical Practice Guidelines for Neck Pain: A Systematic Review. Physical Therapy. 2025;105(2):pzae179.
7. Pankrath N, Nilsson S, Ballenberger N. Adverse events after cervical spinal manipulation: a systematic review and meta-analysis of randomized clinical trials. Pain Physician. 2024;27(4):185-201.
8. Rushton A, Carlesso L, Flynn T, et al. International IFOMPT Cervical Framework for examination of the cervical region for potential vascular pathologies of the neck prior to orthopaedic manual therapy intervention. International Federation of Orthopaedic Manipulative Physical Therapists.

Related ChiroSecure research: Continue exploring the evidence base through ChiroSecure’s research updates on evidence-based chiropractic treatment of neck pain, chiropractic and spinal manipulation, and cervical manipulation combined with neck exercise.