Learn about the muscle pain and discover how chiropractic care combined with causation can help alleviate your pain and improve function.

Abstract

This educational post explores the essential concept of causation in personal injury courtroom cases involving muscle pain, explaining what it is, how structured evidence supports it, and why it is required for fair compensation. Written by Dr. Alexander Jimenez, DC, APRN, FNP-BC, CFMP, IFMCP, ATN, CCST, it integrates the latest findings from leading researchers using modern evidence-based methods. Readers journey through the physiological underpinnings of trauma-induced muscle pain, the role of chiropractic care in restoring function and reducing comorbidities such as sleep disruption, compensatory strain, and reduced activity, and how precise clinical documentation supports legal proof. The post details how integrative chiropractic care fits into non-surgical treatments alongside medical oversight from Dr. Maria Guadalupe Cardenas, MD (Board Certified in Internal Medicine, NPI #1164426749, Texas MD License #J2933), with over 40 years of experience as an internist and Medical Director and Collaborative Physician at Injury Medical Clinic PA (also known as Mission Plaza Injury Medical Clinic) in El Paso, Texas. Clinical observations from Dr. Jimenez’s practice illustrate real-world application, emphasizing a multidisciplinary model that combines chiropractic, functional medicine, rehabilitation, and personal injury care for comprehensive recovery and documentation.

Understanding Causation in Personal Injury Cases Involving Muscle Pain

Causation is the reasoned legal and medical link between a specific incident—such as a motor vehicle collision, slip-and-fall, or workplace trauma—and the resulting injury or condition for which treatment and compensation are sought. In a personal injury courtroom case involving muscle pain, the plaintiff must demonstrate that the defendant’s conduct more likely than not caused or substantially aggravated the diagnosed condition. Absolute certainty is rarely achievable in biology or medicine; instead, courts and insurers require proof to a reasonable degree of medical probability, commonly framed as more likely than not.

Two interrelated components define causation. Actual cause, often evaluated through the but-for test, asks whether the injury would have occurred without the incident. Proximate cause, or legal cause, asks whether the harm was a reasonably foreseeable result of the conduct and whether the connection is sufficiently close to justify liability. In musculoskeletal trauma, both elements are typically satisfied when the mechanism of injury aligns with known tissue tolerances, symptoms begin or clearly worsen after the event, and objective findings correlate with the clinical history.

Why is causation required? Without it, a diagnosis alone does not establish liability. Insurance carriers and defense counsel scrutinize claims because pre-existing degeneration, delayed symptom onset, or subjective complaints can be argued as unrelated to the incident. Establishing the link protects the injured person from under-compensation and ensures the system addresses genuine harm. Expert testimony framed to a reasonable degree of medical probability bridges clinical findings to legal conclusions. Recent appellate decisions in jurisdictions such as Virginia and Michigan have affirmed that properly qualified chiropractors may offer expert opinion on etiology and causation when limited to disorders of the musculoskeletal and nervous systems related to subluxations, misalignments, and joint dysfunctions, provided they lay a proper foundation.

The Bradford Hill criteria, originally proposed by epidemiologist Sir Austin Bradford Hill in 1965, provide a structured framework for evaluating whether an observed association is likely causal. These include strength of association, consistency across studies or observations, specificity, temporality (the exposure must precede the outcome), biological gradient or dose-response relationship, biological plausibility, coherence with existing knowledge, experimental evidence, and analogy. In musculoskeletal personal injury involving muscle pain, temporality is especially powerful: symptoms that begin or clearly worsen after a documented collision, with a mechanism consistent with known tissue tolerances, support causation. Medical records that capture the mechanism in the patient’s own words, the timing of symptom onset, objective findings such as restricted range of motion, positive orthopedic tests, muscle spasm graded by palpation, and imaging that correlates with the clinical presentation become central evidence.

Delayed symptoms are common in soft-tissue injuries because progressive inflammation, muscle guarding, and central sensitization may take one to three days or longer to peak. Thorough documentation distinguishes trauma-related muscle pain from pre-existing conditions. Serial examinations showing progressive improvement with targeted care further strengthen the causal link by showing the condition responds in a way consistent with a new or aggravated injury rather than chronic, unrelated pathology.

What Is Chiropractic Care

Chiropractic care is a licensed healthcare profession that diagnoses and treats neuromusculoskeletal disorders, with particular focus on the spine and extremities. Practitioners use manual therapies including high-velocity, low-amplitude spinal adjustments, mobilizations, soft-tissue techniques, therapeutic exercise, and patient education to restore joint motion, reduce abnormal afferent input, decrease inflammation, and support the body’s natural healing processes without primary reliance on surgery or pharmaceuticals. Modern chiropractic care is evidence-based and grounded in biomechanics and neurophysiology. Clinical guidelines and systematic reviews support spinal manipulative therapy for acute and chronic low back pain, neck pain, and certain headaches.

At its core, chiropractic care addresses joint dysfunction that alters mechanical loading and neural signaling. A high-velocity thrust or controlled mobilization stimulates mechanoreceptors, producing a brief, high-frequency burst of discharge from muscle spindle primary afferents and other dynamically sensitive receptors. Animal and human studies demonstrate that this afferent volley can reduce the excitability of dorsal horn neurons involved in pain transmission and modulate descending inhibitory pathways originating in the brainstem and higher centers. The result is often reduced muscle hypertonicity, improved circulation, and decreased local inflammatory mediators.

How Chiropractic Care Works Hand in Hand with Causation

Chiropractic care supplies both clinical recovery and the contemporaneous documentation that establishes medical causation. The initial examination captures the patient’s mechanism of injury in their own words and correlates it with clinical findings. A note that records “cervical flexion limited to 35 degrees with grade 2/4 bilateral paraspinal spasm at C4–C7” is far more useful than a general remark that the neck is tight. Serial progress notes that track changes in pain scores, sleep quality, work tolerance, and specific activities further illustrate functional impact and response to care.

Objective measures—goniometric range-of-motion readings, orthopedic test results, pain diagrams, validated disability scores, and strength testing—quantify impairment in reproducible ways. These data help distinguish a new or aggravated injury from pre-existing symptoms. Ongoing observation by the treating chiropractor provides continuity that strengthens the causal narrative in the medical record. When symptoms improve with restored joint motion and reduced muscle guarding, the record demonstrates biological plausibility and a dose-response relationship consistent with the Bradford Hill criteria.

Physiological Underpinnings of Trauma-Induced Muscle Pain

Trauma from a collision or fall generates rapid acceleration-deceleration forces that stretch ligaments, irritate facet joints, and produce muscle guarding. Abnormal afferent input from dysfunctional joints facilitates pain transmission and reflex muscle hypertonicity. Local tissue damage releases inflammatory mediators, including interleukins and substance P, which sensitize nociceptors. Persistent nociceptive signaling can lead to central sensitization, in which dorsal horn neurons become hyperexcitable and amplify pain signals even after peripheral inflammation subsides.

Muscle guarding itself creates a self-perpetuating cycle: hypertonic muscles restrict joint motion, further altering afferent input and promoting ischemia and additional inflammatory cascades. Reduced activity leads to deconditioning, atrophy, and compensatory strain on adjacent segments or extremities. Pain-related sleep disruption elevates cortisol and impairs tissue repair. Over time, these changes can contribute to comorbidities such as headaches from upper cervical dysfunction, mood alterations from chronic pain and sleep loss, and systemic effects from reduced physical capacity.

How Chiropractic Care Reduces Muscle Pain and Its Comorbidities

Chiropractic care interrupts these cascades by restoring joint motion, which reduces abnormal afferent drive and muscle hypertonicity. The afferent volley from manipulation modulates dorsal horn excitability and engages descending inhibitory pathways. Improved segmental motion enhances local circulation, facilitating clearance of inflammatory mediators and nutrient delivery. For disc-related issues, controlled distraction or flexion-distraction techniques reduce intradiscal pressure and promote nutrient diffusion.

Evidence supports these effects. A 2018 pragmatic comparative effectiveness trial published in JAMA Network Open by Goertz and colleagues found that adding chiropractic care to usual medical care produced moderate short-term improvements in low back pain intensity and disability among active-duty military personnel, along with higher satisfaction and reduced medication use. A 2025 pragmatic randomized controlled trial published in PLOS One examined 12 weeks of chiropractic spinal adjustments in adults with subclinical spinal pain and reported significant between-group differences, including higher blood levels of brain-derived neurotrophic factor (BDNF) and interleukin-6 in the chiropractic group, along with changes in cortisol and tumor necrosis factor-alpha, consistent with modulation of neuroplasticity, inflammation, and stress responses. Reviews of spinal manipulative therapy demonstrate reductions in pain and improvements in function for neck pain and certain headaches. Observational data associate earlier receipt of chiropractic services with reduced odds of opioid prescription for spine-related pain.

Comorbidities improve as motion and activity return. Restored cervical mobility often reduces cervicogenic headaches. Improved sleep follows reduced nighttime pain. Compensatory strains diminish once primary segments regain normal mechanics. Functional medicine elements, such as addressing sleep hygiene or nutritional support for tissue repair, further support systemic recovery.

Integrative Chiropractic Care in Non-Surgical Treatments

Integrative chiropractic care combines spinal and extremity adjustments with soft-tissue techniques, progressive therapeutic exercise, nutritional counseling, and, when appropriate, non-surgical regenerative options such as platelet-rich plasma or extracorporeal shockwave therapy. Care is phased according to the inflammatory, proliferative, and remodeling stages of healing. Early emphasis is on reducing pain and restoring motion while protecting healing tissues. Later phases focus on load-sharing, motor control, and return to activity. Medical oversight identifies red flags requiring referral and manages systemic comorbidities.

This multimodal approach aligns with contemporary guidelines that recommend non-pharmacological therapies as first-line care for many musculoskeletal conditions. By addressing both the mechanical source of muscle pain and contributing lifestyle or metabolic factors, the model supports durable recovery while generating the detailed records needed for causation analysis.

The Multidisciplinary Team at Injury Medical Clinic PA

At Injury Medical Clinic PA (also known as Mission Plaza Injury Medical Clinic) in El Paso, Texas, Dr. Alexander Jimenez, DC, APRN, FNP-BC, CFMP, IFMCP, ATN, CCST, serves as Clinical Director. His dual licensure as a Doctor of Chiropractic and board-certified Family Nurse Practitioner enables integrated evaluation and treatment. Dr. Maria Guadalupe Cardenas, MD (Board Certified in Internal Medicine, NPI #1164426749, Texas MD License #J2933), with over 40 years of experience as an internist, works with Dr. Jimenez as Medical Director and Collaborative Physician. This multidisciplinary setup is common in integrative or injury care clinics, where an MD provides medical direction alongside a chiropractor.

The team integrates chiropractic care (Dr. Jimenez) with medical oversight from Dr. Cardenas, along with functional medicine, personal injury care, rehabilitation, and related services. Dr. Cardenas provides physician-level oversight for complex cases, comorbidities, imaging interpretation, and referrals. Rehabilitation specialists, physical therapists, massage therapists, and nursing staff support coordinated recovery. The result is coherent medical records that document mechanism, findings, treatment response, and functional progress, strengthening the evidentiary foundation for causation while optimizing clinical outcomes.

Clinical Observations of Dr. Alexander Jimenez

Over more than three decades of practice, Dr. Jimenez has observed that precise documentation of the mechanism of injury combined with progress-adjusted, multimodal plans produces high rates of functional recovery. Delayed symptom onset of one to three days is common after low-speed collisions involving soft-tissue strain. Early restoration of joint motion frequently improves sleep and reduces secondary pain sites. In one illustrative case of a young adult involved in a rear-end collision, neck and back pain ratings of 10 and 9 out of 10 improved to minimal discomfort over approximately 11 weeks of integrated care, with full motion restored. Another laborer recovered approximately 80 percent of function in 19 weeks after a collision, with re-evaluation after a subsequent incident confirming the original timeline. These observations align with the literature supporting multimodal, non-surgical care for trauma-related muscle pain.

Why Specific Techniques and Protocols Are Used

High-velocity, low-amplitude adjustments are used because they produce an afferent volley that reduces dorsal horn excitability and muscle hypertonicity, restoring segmental motion lost to trauma. Mobilization or soft-tissue techniques are chosen when acute inflammation or patient preference requires a gentler approach, still addressing restricted motion without the same intensity of thrust. Flexion-distraction or decompression protocols are selected for disc-related muscle pain or radicular symptoms because they reduce intradiscal pressure and promote fluid exchange, addressing the mechanical source of chemical and mechanical irritation. Progressive exercise is prescribed to remodel tissue, restore motor control, and prevent deconditioning because passive care alone does not retrain the neuromuscular system for daily loads. Nutritional and functional medicine support is added because trauma increases metabolic demand for repair; addressing deficiencies or inflammatory drivers accelerates recovery and reduces comorbidity risk. Each protocol is individualized according to healing phase, objective findings, and response, with medical oversight ensuring safety.

Conclusion

Causation is the indispensable bridge that connects a traumatic incident to compensable muscle pain in the personal injury courtroom. It is justified through a coherent narrative of mechanism, temporality, objective findings, biological plausibility, and treatment response, evaluated against frameworks such as the Bradford Hill criteria and expressed to a reasonable degree of medical probability. Chiropractic care supports this process by restoring function—through improved joint motion, modulation of pain pathways, and reduced inflammatory and stress-related biomarkers—and by generating the detailed, serial documentation that clarifies the causal link. When integrated with medical oversight from an experienced internist such as Dr. Maria Guadalupe Cardenas, functional medicine, and rehabilitation within a multidisciplinary clinic, the approach addresses the physiological cascades of trauma while supporting durable recovery and fair resolution of the legal claim. The latest evidence from pragmatic trials and biomarker studies continues to refine understanding of these mechanisms, affirming the value of evidence-based, integrative care for patients navigating both healing and courtroom requirements.

References

• Hill, A. B. (1965). The environment and disease: Association or causation?. Proceedings of the Royal Society of Medicine, 58(5), 295–300.
• Goertz, C. M., Long, C. R., Vining, R. D., Pohlman, K. A., Walter, J., & Colter, I. (2018). Effect of usual medical care plus chiropractic care vs usual medical care alone on pain and disability among US service members with low back pain: A comparative effectiveness clinical trial. JAMA Network Open, 1(1), e180105.
• PLOS One study on biomarkers. (2025). The effects of 12 weeks of chiropractic spinal adjustments on physiological biomarkers in adults: A pragmatic randomized controlled trial. PLOS One.
• Weeks, W. B., Goertz, C. M., & Meeker, W. C. (2016). Cross-sectional analysis of per capita supply of doctors of chiropractic and opioid use in younger Medicare beneficiaries. Journal of Manipulative and Physiological Therapeutics.
• Pickar, J. G. (2002). Neurophysiological effects of spinal manipulation. The Spine Journal, 2(5), 357–371.
• Gevers-Montoro, C., Provencher, B., Descarreaux, M., Ortega de Mues, A., & Piché, M. (2021). Neurophysiological mechanisms of chiropractic spinal manipulation for spine pain. European Journal of Pain, 25(7), 1429–1448.
• Côté, P., Hartvigsen, J., Axén, I., Leboeuf-Yde, C., Courseau, M., Cortese, F., … & Mior, S. (2021). The global summit on the efficacy and effectiveness of spinal manipulative therapy for the prevention and treatment of non-musculoskeletal disorders: A systematic review of the literature. Chiropractic & Manual Therapies, 29(1), 8.

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