Chiropractic Treatment of Lower Extremity Conditions: What the Research Shows

Lower extremity complaints are common in chiropractic practice, but the research supporting chiropractic management of the hip, knee, ankle, and foot is not uniform. Some conditions have clinical trials and systematic reviews supporting components of conservative care, while other areas remain dominated by case reports or small studies.

This distinction matters. The available evidence does not justify treating “lower extremity conditions” as one diagnosis or assuming that every patient will respond to the same intervention. Instead, the literature supports a clinically reasoned, multimodal approach that considers the involved joint or tissue, the patient’s functional limitations, relevant contributing factors, and the need for co-management or referral when indicated.

Watch the ChiroSecure Research Update

Video overview

This ChiroSecure Research Update examines the published literature on chiropractic management of lower extremity conditions. The original research review by Hoskins and colleagues examined chiropractic literature involving the hip, knee, ankle, and foot and assessed whether reported care included peripheral treatment, spinal treatment, or both.

The video provides useful historical context. This updated article goes further by placing that 2006 literature review alongside subsequent clinical trials, systematic reviews, clinical practice guidance, and contemporary considerations for clinical decision-making.

What the Original Lower Extremity Literature Review Found

Hoskins, McHardy, Pollard, Windsham, and Onley published Chiropractic Treatment of Lower Extremity Conditions: A Literature Review in the Journal of Manipulative and Physiological Therapeutics in 2006.

The investigators searched CINAHL, MEDLINE, MANTIS, and ScienceDirect from database inception through December 15, 2005. Their search used chiropractic and anatomical terms relating to the hip, knee, ankle, and foot. Studies were included when they involved a lower extremity diagnosis and treatment by doctors of chiropractic. Studies involving referred pain from the spine, duplicate publications, non-peer-reviewed literature, and conference abstracts were excluded.

The search produced 1,652 citations. Of those, 76 were considered relevant:

• 24 citations involved the foot.
• 10 citations involved the ankle.
• 25 citations involved the knee.
• 17 citations involved the hip.

The review also found that the published interventions were predominantly multimodal. Twenty-nine citations included spinal treatment, while 47 described peripheral treatment alone; two of the spinal-treatment citations were exclusively spinal. Ten citations were clinical trials assessed with the Physiotherapy Evidence Database scale.

The authors’ central conclusion was cautious: the literature contained a large proportion of case studies and a much smaller body of higher-level evidence. They recommended more rigorous research, particularly randomized controlled trials.

That conclusion remains important today. The 2006 review describes the state of the evidence at that time; it does not establish that chiropractic care is effective for every lower extremity diagnosis.

Read the Hoskins et al. review on PubMed.

What Has Changed Since the 2006 Review?

Subsequent research has expanded the evidence base, particularly for osteoarthritis and common sports-related conditions. However, the newer literature does not produce a single answer for all lower extremity conditions.

A useful way to interpret the evidence is to separate it into four broad regions: hip, knee, ankle, and foot.

Hip: Evidence Supports a Multimodal Conservative Approach, but Specific Techniques Matter

Hip osteoarthritis is one of the better-researched lower extremity conditions in chiropractic literature.

A randomized controlled trial conducted in two chiropractic teaching clinics included 111 participants with symptomatic mild-to-moderate hip osteoarthritis. Participants received either targeted hip manual and manipulative therapy plus exercise or a full kinetic-chain approach plus exercise. Both groups received nine treatments over five weeks.

The study found no statistically significant or clinically meaningful difference between the two approaches. In other words, adding full kinetic-chain treatment did not outperform targeted hip treatment when both approaches included exercise.

This finding is clinically useful because it challenges an overly broad interpretation of the kinetic-chain concept. A practitioner may evaluate the entire lower extremity, but that does not automatically mean that treating every segment will produce better outcomes.

Review the hip osteoarthritis randomized trial on PubMed.

ChiroSecure also previously highlighted the research protocol for this line of investigation, which specifically evaluated chiropractic management of the lower limb kinetic chain in patients with hip osteoarthritis.

Read the ChiroSecure Research Update on hip osteoarthritis and the lower-limb kinetic chain.

More broadly, systematic-review evidence suggests that adding manual therapy to exercise for hip or knee osteoarthritis may provide some short-term benefit for pain, but there is little evidence of additional long-term benefit over exercise alone. This reinforces the value of viewing manual therapy as one component of a broader management strategy rather than as a stand-alone solution.

Knee: Manual Therapy May Help, but Exercise Remains Central

Knee osteoarthritis has a larger research base than many other lower extremity conditions, but the quality and consistency of that evidence vary.

A chiropractic pilot randomized trial involving 83 patients with mild-to-moderate knee osteoarthritis compared manual and manipulative therapy, rehabilitation, and a combination of the two. All groups demonstrated statistically significant and clinically meaningful improvements over five weeks. However, between-group differences were not statistically significant.

That is an important distinction. Improvement within a treatment group does not prove that the treatment caused the improvement, particularly when there is no statistically significant difference between treatment groups.

Review the chiropractic knee osteoarthritis pilot trial on PubMed.

Broader manual-therapy evidence is also mixed. A 2024 systematic review and meta-analysis found that manual therapy may reduce pain in knee osteoarthritis, but the authors rated the overall methodological quality of the included studies as limited and the certainty of evidence as low. Other systematic reviews have found short-term benefits but little evidence that manual therapy adds meaningful long-term benefit over exercise.

Current orthopedic guidance similarly places exercise at the center of conservative knee osteoarthritis management. The American Academy of Orthopaedic Surgeons states that manual therapy in addition to exercise may improve pain and function, but rates the recommendation as limited because of inconsistent evidence.

Review the AAOS knee osteoarthritis clinical practice guideline.

For chiropractic clinicians, the practical implication is straightforward: manual care can be incorporated when clinically appropriate, but it should not displace exercise, functional rehabilitation, patient education, or appropriate co-management.

See the related ChiroSecure Research Update on chiropractic management of knee osteoarthritis.

Ankle: Assessment and Rehabilitation Are Essential

Ankle complaints range from uncomplicated sprains to fracture, syndesmotic injury, instability, tendon disorders, and other conditions requiring different management.

Research supports conservative management for many acute ankle sprains, with early mobilization, exercise, functional support, and rehabilitation playing important roles. Systematic reviews have also reported benefits from manual therapy for selected outcomes such as dorsiflexion range of motion, pain, and function.

However, manual therapy should follow appropriate clinical assessment rather than substitute for it.

For example, the American College of Radiology’s current criteria for acute ankle trauma incorporate the Ottawa Ankle Rules. When the rules are positive, ankle radiography is considered usually appropriate. When the rules are negative in an otherwise appropriate patient, initial radiography is usually not appropriate.

Review the ACR criteria for acute ankle trauma.

The research on chiropractic care also includes case reports involving recurrent ankle instability. These reports can be clinically interesting, but they represent lower-level evidence and should not be interpreted as proof that a particular chiropractic technique is effective for all patients with ankle instability.

Read the ChiroSecure Research Update on recurrent lateral ankle sprain.

Foot Conditions: Evidence Varies by Diagnosis

Foot disorders are another area in which diagnosis matters. Plantar heel pain, for example, should not automatically be equated with a single structural lesion or managed with one technique.

Systematic reviews have found some evidence supporting manual therapy for plantar heel pain, particularly when manual techniques are combined with stretching, strengthening, or other conservative interventions. At the same time, more recent research continues to describe uncertainty and methodological limitations in the manual-therapy literature.

Best-practice guidance for plantar heel pain emphasizes education, plantar fascia stretching, taping, footwear considerations, and appropriately stepped conservative care. Manual therapy may be incorporated when it fits the patient’s presentation and treatment goals.

Review the best-practice guide for plantar heel pain.

ChiroSecure has also published a case report involving a pediatric athlete with plantar heel pain who improved following a multimodal program involving manipulation, soft-tissue treatment, stretching, and rehabilitation. As with other case reports, the result is useful for clinical discussion but cannot establish treatment efficacy by itself.

Read the ChiroSecure Research Update on pediatric plantar fasciitis.

What a Multimodal Approach Actually Means

The original 2006 review’s observation that lower extremity chiropractic care was predominantly multimodal remains clinically relevant.

A multimodal approach does not mean applying every available intervention. Instead, it means selecting interventions that address the patient’s specific impairments, functional limitations, goals, and risk profile.

Depending on the diagnosis, an evidence-informed plan may include:

• Patient education and shared decision-making.
• Appropriate manual or manipulative therapy.
• Therapeutic exercise and progressive loading.
• Mobility or flexibility work when indicated.
• Neuromuscular or proprioceptive training.
• Activity modification and graded return to activity.
• Footwear, taping, bracing, or other external supports when appropriate.
• Coordination with medical, physical therapy, podiatric, orthopedic, or other providers when indicated.

For osteoarthritis in particular, major clinical guidance continues to emphasize exercise and self-management. The American College of Rheumatology identifies exercise as an important component of hip and knee osteoarthritis management, while the AAOS knee guideline supports exercise and permits manual therapy as an adjunct with limited-strength evidence.

Review the American College of Rheumatology osteoarthritis guideline resources.

Clinical Screening Should Come Before Treatment Selection

Lower extremity pain is not synonymous with a mechanical musculoskeletal disorder. A sound examination should consider whether the presentation is appropriate for conservative chiropractic management and whether additional investigation or referral is necessary.

Particular attention is warranted when the history or examination suggests fracture, infection, significant neurological compromise, inflammatory disease, vascular pathology, malignancy, or another condition outside the expected scope of routine musculoskeletal care.

For example, a swollen or painful leg can have multiple causes. When deep vein thrombosis is suspected, NICE recommends formal assessment using the DVT Wells score and an appropriate diagnostic pathway rather than treating the presentation as a routine musculoskeletal complaint.

Review the current NICE recommendations for suspected DVT.

For chiropractors, this is more than a diagnostic formality. Appropriate screening, documentation, informed consent, and referral decisions are integral components of responsible extremity care.

How Strong Is the Evidence?

Area	What the literature suggests	Important limitation
Overall chiropractic lower extremity literature	Predominantly multimodal care with a mixture of peripheral and spinal treatment.	The original evidence base contained many case reports and relatively few higher-level trials.
Hip osteoarthritis	Chiropractic/manual therapy combined with exercise has been studied in randomized trials.	Specific kinetic-chain treatment did not outperform targeted hip treatment in one 111-person trial.
Knee osteoarthritis	Manual therapy may provide short-term improvements when incorporated into conservative care.	Evidence quality and long-term benefit remain uncertain; exercise remains foundational.
Ankle sprain	Conservative rehabilitation, exercise, functional support, and selected manual techniques have evidence supporting their use.	Assessment must rule out fracture and other significant injury before treatment selection.
Foot and plantar heel pain	Some evidence supports manual therapy as part of multimodal conservative management.	Results vary by technique and diagnosis, and evidence remains heterogeneous.

Practical Takeaways for Chiropractors

1. Do not treat “lower extremity conditions” as one diagnosis. Hip, knee, ankle, and foot disorders require different clinical reasoning.
2. Use the 2006 review as historical context, not as current proof of effectiveness. Its search ended in 2005.
3. Favor multimodal care when appropriate. Exercise, rehabilitation, education, and activity modification frequently form the foundation of conservative management.
4. Interpret chiropractic-specific studies carefully. Many are case reports, pilot studies, or comparisons between active treatment strategies rather than trials against no treatment.
5. Do not confuse manual therapy evidence with chiropractic-specific evidence. A systematic review of manual therapy may include physical therapists, chiropractors, osteopaths, or other clinicians.
6. Screen before treating. Fracture, DVT, infection, serious neurological disease, and other non-mechanical conditions require appropriate medical evaluation.
7. Document clinical reasoning. Record the diagnosis or working diagnosis, examination findings, treatment rationale, response to care, functional goals, and referral or co-management decisions.

Frequently Asked Questions

Can chiropractors treat lower extremity conditions?

Chiropractors may manage selected musculoskeletal conditions involving the lower extremity when those conditions fall within their legal scope of practice, training, competence, and clinical setting. The evidence varies substantially by diagnosis, so treatment should be based on an appropriate examination and evidence-informed clinical reasoning.

Does chiropractic care include treatment of the hip, knee, ankle, and foot?

Extremity care is included in the chiropractic literature, with published research addressing the hip, knee, ankle, and foot. The 2006 literature review identified relevant citations in all four regions, although the amount and quality of evidence differed between conditions.

Is manual therapy effective for knee osteoarthritis?

Manual therapy may provide short-term improvements in pain and function for some patients with knee osteoarthritis, but the evidence is not uniformly strong. Current guidelines emphasize exercise and other evidence-based conservative measures, with manual therapy considered an adjunct rather than a replacement for rehabilitation.

Should an ankle sprain always be adjusted?

No. An ankle sprain should first be clinically assessed to determine whether fracture or another significant injury is possible. When conservative management is appropriate, treatment may include exercise, functional support, progressive loading, and selected manual therapy based on the patient’s presentation.

What is the strongest message from the lower extremity research?

The strongest practical message is that lower extremity chiropractic care should be individualized and multimodal. The literature supports continued research into extremity manipulation and manual therapy, but it does not support broad claims that chiropractic treatment is effective for every lower extremity disorder.

Conclusion

The 2006 literature review on chiropractic treatment of lower extremity conditions remains a useful historical reference because it documented the breadth of published chiropractic research involving the hip, knee, ankle, and foot. It also correctly identified a major limitation of that literature: a large proportion consisted of case reports, with comparatively fewer higher-level clinical trials.

Research published since then has strengthened the evidence base in selected areas, particularly osteoarthritis and ankle rehabilitation, but it has also reinforced the importance of interpreting findings within the specific diagnosis and intervention being studied.

For today’s chiropractor, the most defensible approach is neither to dismiss extremity care nor to overstate the evidence. Instead, clinicians can use a structured examination, appropriate differential diagnosis, evidence-informed manual care, exercise and rehabilitation, patient education, and timely referral or co-management when necessary.

That approach is consistent with the central lesson of the lower extremity literature: chiropractic care should be clinically reasoned, appropriately scoped, and supported by progressively stronger research.

References

1. Hoskins W, McHardy A, Pollard H, Windsham R, Onley R. Chiropractic treatment of lower extremity conditions: a literature review. Journal of Manipulative and Physiological Therapeutics. 2006;29(8):658-671. doi:10.1016/j.jmpt.2006.08.004. PubMed.
2. Brantingham JW, Parkin-Smith G, Cassa TK, et al. Full kinetic chain manual and manipulative therapy plus exercise compared with targeted manual and manipulative therapy plus exercise for symptomatic osteoarthritis of the hip: a randomized controlled trial. Archives of Physical Medicine and Rehabilitation. 2012;93(2):259-267. PubMed.
3. Dwyer L, Parkin-Smith GF, Brantingham JW, et al. Manual and manipulative therapy in addition to rehabilitation for osteoarthritis of the knee: assessor-blind randomized pilot trial. Journal of Manipulative and Physiological Therapeutics. 2015;38(1):1-21.e2. PubMed.
4. Runge N, Aina A, May S. The benefits of adding manual therapy to exercise therapy for improving pain and function in patients with knee or hip osteoarthritis: a systematic review with meta-analysis. Journal of Orthopaedic & Sports Physical Therapy. 2022;52(10):675-684. PubMed.
5. American Academy of Orthopaedic Surgeons. Management of Osteoarthritis of the Knee (Non-Arthroplasty). Clinical Practice Guideline. AAOS.
6. American College of Rheumatology. Osteoarthritis Clinical Practice Guidelines. ACR.
7. American College of Radiology. ACR Appropriateness Criteria: Acute Trauma to the Ankle. ACR.
8. Martin RL, et al. Evidence summarized in systematic reviews concerning acute ankle sprain management and manual therapy. PubMed.
9. McClinton S, et al. Management of plantar heel pain: a best practice guide informed by a systematic review, expert clinical reasoning and patient values. British Journal of Sports Medicine. PubMed.
10. National Institute for Health and Care Excellence. Venous thromboembolic diseases: diagnosis, management and thrombophilia testing. NICE Guideline NG158. NICE.