Myofascial Pain Solutions with Trigger Point Injections

Find out how trigger point injections target myofascial pain, providing relief and aiding in your recovery process.

Abstract

This educational post explores the intricate world of musculoskeletal pain, focusing on the diagnosis and treatment of myofascial trigger points. As Dr. Alex Jimenez, DC, APRN, FNP-BC, CFMP, IFMCP, ATN, CCST, I will guide you through the latest evidence-based approaches to trigger point injection therapy. We will delve into the physiological mechanisms of muscle spasm and scar tissue formation, the rationale behind specific injection techniques like the “star pattern,” and the therapeutic agents used, such as lidocaine and natural anti-inflammatories like Sarapin. This article highlights the collaborative, multidisciplinary framework at Injury Medical Clinic, where I work alongside our Medical Director, Dr. Maria Guadalupe Cardenas, MD, an experienced internist. We will discuss how integrating my expertise in chiropractic, functional medicine, and rehabilitation with Dr. Cardenas’s internal medicine oversight provides a comprehensive, safe, and effective patient care model. Our goal is to offer a holistic journey from pain to recovery, emphasizing the importance of anatomical knowledge, precise technique, and a patient-centered philosophy. This post will serve as a definitive guide for patients and practitioners alike, seeking to understand how modern, integrative care can resolve complex musculoskeletal conditions.

Our Integrated Care Philosophy: A Synergy of Expertise

At Injury Medical Clinic, our approach is built on a foundation of collaboration. I am Dr. Alex Jimenez, and my practice is dedicated to understanding and treating the root causes of pain and dysfunction through a blend of chiropractic care, advanced practice nursing, and functional medicine. This comprehensive model is strengthened and guided by the invaluable medical oversight of our Medical Director and Collaborative Physician, Dr. Maria Guadalupe Cardenas, MD.

Dr. Cardenas is a Board-Certified Internist with over four decades of clinical experience. Her extensive background in internal medicine provides the essential medical framework that ensures our treatments are not only effective but also held to the highest standards of safety and medical necessity. Her role is pivotal; she reviews our protocols, consults on complex cases, and provides the medical direction required for advanced procedures like trigger point injections. This multidisciplinary partnership between a Doctor of Chiropractic (DC) with advanced specializations and a Medical Doctor (MD) is a cornerstone of modern integrative and injury care. It allows us to bridge the gap between different healthcare disciplines, offering our patients the best of all worlds: the structural and functional focus of chiropractic and the deep systemic and diagnostic knowledge of internal medicine. Together, we manage a wide spectrum of conditions, from acute personal injuries and sports-related issues to chronic pain syndromes, ensuring every patient receives a tailored, holistic, and medically sound treatment plan.

Understanding Myofascial Trigger Points: The Epicenter of Chronic Pain

Before we delve into the specifics of treatment, it’s crucial to understand what we are targeting. Many patients come to me with widespread, nagging pain that often seems to have no clear origin. They might point to a general area—the shoulder, the neck, the lower back—and describe a deep, aching, or burning sensation. In many of these cases, the culprits are myofascial trigger points.

A trigger point is essentially a hyperirritable, taut band of skeletal muscle fibers. Think of it as a microscopic knot or contraction within a muscle that doesn’t release. This knot can be felt as a small, tender nodule. When you press on it, it often elicits a “jump sign”—an involuntary flinch from the patient due to exquisite tenderness. More significantly, trigger points are notorious for causing referred pain, which is pain perceived in an area distant from the actual source. For example, a trigger point in the trapezius muscle in the upper back can refer pain up into the neck, behind the eye, and down the arm, mimicking conditions like a pinched nerve or a migraine.

The Physiology of a Trigger Point: A Vicious Cycle

So, how does this knot form? The process is a complex interplay of physiological and biomechanical factors, often initiated by:

• Acute Trauma: A car accident, a fall, or a sports injury can cause sudden muscle overload.
• Repetitive Microtrauma: Poor posture, repetitive occupational tasks (like typing or lifting), or even clenching your jaw can create sustained, low-level stress on muscle fibers.
• Chronic Stress: Emotional and psychological stress leads to increased muscle tension, particularly in the neck and shoulders, creating a fertile ground for trigger points.
• Nutritional Deficiencies: Lack of certain vitamins and minerals, like magnesium or vitamin D, can impair muscle function and contribute to irritability.

At the cellular level, this sustained stress leads to an “energy crisis.” The muscle fibers in the affected area receive a continuous signal to contract but don’t receive the necessary energy (in the form of adenosine triphosphate, or ATP) to release. This localized contraction compresses tiny blood vessels (capillaries) within the muscle, reducing blood flow. The reduced circulation means less oxygen and fewer nutrients are delivered, and metabolic waste products, like lactic acid, accumulate. This acidic, low-oxygen environment irritates nerve endings, causing pain and further perpetuating the muscle contraction. This creates a self-sustaining vicious cycle: contraction → reduced blood flow → energy crisis → waste buildup → pain → more contraction.

Over time, the body attempts to “stabilize” this dysfunctional area by laying down fibrous connective tissue, or scar tissue. This is the scarring that occurs when a muscle is in a chronic state of spasm. This fibrotic tissue is less flexible and more restrictive than healthy muscle tissue, further limiting movement, perpetuating the pain cycle, and making the muscle more susceptible to future injury. This is the pathological state we aim to disrupt with our treatments.

Trigger Point Injection Therapy: A Precision Approach to Releasing Pain

One of the most effective and direct methods for deactivating these stubborn trigger points is Trigger Point Injection (TPI) therapy. While there are other valuable manual therapies, such as ischemic compression, massage, and chiropractic adjustments—all of which we integrate into our care plans—TPI offers a unique advantage. It allows us to deliver a therapeutic agent directly into the heart of the dysfunctional tissue, physically and chemically breaking the pain-spasm cycle.

We used to perform dry needling, which involves inserting a fine, solid filiform needle into the trigger point without injecting any substance. The mechanical action of the needle itself—the “star pattern” we’ll discuss shortly—is highly effective at breaking up the fibrous adhesions and eliciting a “local twitch response,” an involuntary spinal cord reflex that helps the muscle fibers release. This technique is still used and can be very beneficial, especially for patients who may have allergies to anesthetic agents. As I’ve observed in my practice, many acupuncturists achieve significant results with dry needling alone.

However, my clinical experience, supported by modern research, has shown that we can achieve a more profound and lasting result by injecting a therapeutic solution. This is where wet needling, or TPI, comes in.

The “Star Pattern” Technique: Mechanically Disrupting Scar Tissue

When performing TPI, our technique is precise and methodical. It’s not just about a single injection into the center of the knot. We employ what’s known as the “star pattern” or “fanning” technique. Here’s a step-by-step breakdown of how and why this works:

1. Locating the Epicenter: First, through careful palpation, I identify the taut band and the precise location of the trigger point—the area of maximum tenderness.
2. Initial Insertion: The needle is inserted through the skin and advanced into the center of the trigger point. The goal is to elicit that local twitch response, which confirms we are in the correct spot.
3. The Fanning Motion: Instead of withdrawing the needle completely, I leave the tip within the muscle tissue and pivot it, redirecting it into the surrounding fibrotic tissue in multiple directions, resembling the points of a star. I move the needle in and out in these different directions, physically breaking up the dense, scarred adhesions that have formed around the trigger point.
4. Injecting the Solution: As I perform this fanning motion, I simultaneously inject small amounts of our therapeutic solution. This ensures the medication is distributed throughout the entire dysfunctional area, not just in one spot.

This technique is analogous to what we used to do with dry needling, but with the added benefit of the injectate. The mechanical action of the needle acts like a microscopic scalpel, severing the cross-linked fibrous bands. This physical disruption is the first step in restoring normal muscle texture and function. It immediately begins to release the mechanical tension that has been choking off blood supply.

A Patient-Centered Approach to the Procedure

Performing these injections requires not only technical skill but also a deep understanding of the patient’s experience. Pain perception is subjective, and a patient’s anxiety can heighten their sensitivity. Over the years, I’ve refined my approach to maximize comfort and ensure compliance.

I’ve learned to save the most sensitive or “worst” trigger point for last. If I start with the one that is likely to be the most painful, the patient’s anxiety and muscle guarding will escalate, making the rest of the procedure far more difficult and unpleasant. They might be tempted to say, “No more!” By starting with less sensitive points and building trust, the patient remains more relaxed. This is a practical, patient-centered strategy that I find is crucial for success. I don’t want to argue with my patients; I want to partner with them in their healing.

The Therapeutic Cocktail: What We Inject and Why

The choice of what to inject is just as important as the technique itself. At our clinic, we use a carefully selected combination of agents designed to work synergistically to break the pain cycle from multiple angles. Our standard formula is a one-to-one mixture of a local anesthetic and a natural anti-inflammatory agent.

Lidocaine: Numbing the Nerves and More

The local anesthetic we typically use is 1% Lidocaine. Its primary function is to provide immediate pain relief by numbing the area.

• Mechanism of Action: Lidocaine is a sodium channel blocker. Pain signals are transmitted along nerve fibers via electrical impulses, which are generated by the rapid influx of sodium ions into the nerve cells. Lidocaine temporarily blocks these sodium channels, preventing the nerve from depolarizing and sending a pain signal to the brain. This creates an immediate anesthetic effect, making the procedure more tolerable and providing instant relief.
• Beyond Numbing: The benefits of lidocaine go beyond simple numbing. Interrupting the pain signal itself helps break the vicious cycle. By silencing the irritated nerve endings within the trigger point, we reduce the reflexive muscle guarding and spasm that the pain was causing. This allows the muscle to relax, which in turn helps to restore blood flow to the oxygen-starved tissue.

It’s important to consider patient allergies. While rare, an allergy to lidocaine or other “-caine” anesthetics (like Marcaine) can occur. Studies suggest that true IgE-mediated allergies to amide anesthetics like lidocaine are extremely uncommon, with an estimated prevalence of less than 1% (Bhole et al., 2012). However, we always conduct a thorough patient history. If a true allergy exists, we can opt for dry needling, which, as mentioned, is still a very effective standalone treatment.

Sarapin (Ceraferm): The Natural Anti-Inflammatory Powerhouse

While some practitioners might use corticosteroids (steroids) in their injections, I prefer a different path. My philosophy, rooted in functional and integrative medicine, is to work with the body’s natural healing processes as much as possible. This is why I almost always add a natural anti-inflammatory agent to the lidocaine.

My preferred agent is Sarapin, which is also marketed under brand names like Ceraferm. Sarapin is a sterile aqueous solution derived from the pitcher plant (Sarracenia purpurea). It has been used for decades as a safe and effective analgesic and anti-inflammatory, particularly for neuralgic and musculoskeletal pain.

• Mechanism of Action: The exact mechanism of Sarapin is not fully elucidated, but it is believed to act as a neurolytic agent that affects sensory nerves without impacting motor function. It appears to selectively target and inhibit the function of the small, unmyelinated “C” fibers that transmit dull, aching, chronic pain signals. It does not damage the nerve but rather interrupts its ability to transmit pain. This provides prolonged pain relief that lasts long after the lidocaine has worn off.
• Why Sarapin Over Steroids?: Corticosteroids are potent anti-inflammatory drugs, but their use comes with potential downsides, especially with repeated injections. They can weaken tendons and cartilage, suppress the local immune response, and, over time, cause tissue atrophy (degeneration). From my clinical perspective, steroids are a powerful tool but should be used judiciously. Sarapin, on the other hand, offers a powerful anti-inflammatory and analgesic effect without these associated risks. It is an all-natural product that supports healing rather than suppressing the body’s systems. My experience has consistently shown that the combination of lidocaine and Sarapin yields a superior, more durable result than lidocaine alone or even lidocaine with steroids for this particular application. The one-to-one ratio of lidocaine to Sarapin provides a balanced formulation that addresses both the immediate pain and the underlying inflammation driving the trigger point’s persistence.

Customizing the Treatment: Depth, Dosage, and Anatomy

Effective TPI is not a one-size-fits-all procedure. It requires a deep, three-dimensional understanding of human anatomy and the ability to adapt the technique based on the specific muscle being treated and the individual patient’s body composition.

Injection Depth and Safety

A common concern for both patients and practitioners learning the technique is safety, particularly the risk of puncturing a lung (pneumothorax) when injecting in the thoracic region. This is where anatomical knowledge is paramount.

• Cervical and Upper Thoracic Regions: In the neck and upper back, the muscles are generally more superficial, and vital structures are close by. For these areas, I typically use a 30-gauge, 1-inch needle. The smaller gauge makes the injection more comfortable, and the 1-inch length provides a built-in safety margin. Even in a very thin individual, a 1-inch needle inserted perpendicularly is highly unlikely to reach the pleural space of the lungs. The layers of skin, subcutaneous fat, muscle (like the trapezius and rhomboids), and the rib cage itself provide significant protection.
• Lower Thoracic and Lumbar Regions: In the lower back, the muscles (like the quadratus lumborum and erector spinae) are much thicker and more robust. Here, we can safely use a slightly larger needle, such as a 5-inch needle, to ensure we reach the full depth of the trigger point, which may be located deep within the muscle belly. While a 1.5-inch needle carries a slightly greater theoretical risk in the thoracic area, especially in frail or elderly patients, it is perfectly safe in the thick musculature of the lumbar spine. Constant awareness of the underlying anatomy—knowing where the ribs are, the angle of their slope, and the location of the kidneys—is non-negotiable.

The key is to go back and constantly review your anatomy. This is a principle I stress to all healthcare professionals, whether they are in orthopedics, aesthetics, or pain management. I’ll be the first to admit, I struggled with anatomy in school; everyone does at first. But it is the absolute foundation of safe and effective manual and injection-based medicine. You have to be able to visualize the layers of tissue your needle is passing through.

Dosage Considerations

The volume of fluid injected also varies by region. The smaller muscles of the cervical and upper thoracic spine can comfortably accommodate about 1 mL of the solution per injection site. Injecting more than this can cause excessive pressure and discomfort. The larger, bulkier muscles of the lumbar region can easily handle 2 mLs per site, allowing for more thorough infiltration of the therapeutic solution throughout the trigger point complex.

It’s also important to note that you don’t always have to use the entire amount drawn into the syringe for a single patient. If there is any leftover Sarapin solution, for example, it cannot be saved for another patient or another procedure. However, some products, depending on their formulation and packaging, might be sent home with the patient for topical application if appropriate, but this is highly specific to the product and is not standard practice for injectable solutions.

The Root Causes of Pain- Video

Integrating TPI with Chiropractic and Rehabilitative Care

Trigger Point Injection therapy is a powerful tool, but it is rarely a standalone cure. In our clinic, it is one component of a comprehensive, integrated treatment plan designed to address the root cause of the problem and prevent its recurrence. This is where the synergy of our multidisciplinary team truly shines.

The Role of Chiropractic Care

After TPI, the muscle relaxes, the pain diminishes, and the tissue becomes more pliable. This creates a crucial window of opportunity for chiropractic intervention. My role as a chiropractor is to address the underlying biomechanical dysfunctions that likely led to the formation of the trigger points in the first place.

• Spinal and Extremity Adjustments: If a patient has trigger points in their upper back and neck, it’s often due to misalignments (subluxations) in the cervical or thoracic spine. These misalignments can cause nerve irritation and altered muscle firing patterns, leading to chronic muscle tension. Following TPI, I can perform specific chiropractic adjustments to restore proper joint mechanics. With the muscles relaxed, the adjustments are often easier to perform and more effective. Restoring proper spinal alignment takes the chronic strain off the surrounding musculature, preventing the trigger points from quickly reforming.
• Postural Correction: Poor posture is a primary driver of myofascial pain. I work with patients on postural awareness and corrective exercises. We might use techniques like Chiropractic BioPhysics (CBP) to structurally remodel the spine and restore its natural curves, providing a long-term solution to the stresses that cause trigger points.

The Role of Rehabilitation and Functional Medicine

Releasing the trigger point is just the first step. To ensure lasting recovery, we must retrain the body. Our rehabilitation team guides patients through specific protocols:

• Stretching and Mobilization: Immediately after TPI, we encourage gentle stretching of the treated muscle. With the pain and spasm gone, the muscle can be moved through its full range of motion, helping to realign the muscle fibers and prevent new adhesions from forming.
• Strengthening: Once the muscle is mobile and pain-free, we begin a targeted strengthening program. We focus on strengthening the weak, inhibited muscles that have been “bullied” by the tight, overactive muscles containing the trigger points. For example, in a patient with rounded shoulders, we would strengthen the rhomboids and lower trapezius while stretching the tight pectoral muscles. This restores muscular balance and provides dynamic support for the skeletal system.
• Functional Medicine: As a certified functional medicine practitioner, I also look at the bigger picture. We might run lab tests to check for nutritional deficiencies (e.g., magnesium, Vitamin B12, Vitamin D) or systemic inflammation that could be contributing to muscle dysfunction. Addressing these underlying biochemical imbalances can make the body more resilient and less prone to developing trigger points in the future.

This integrated model—combining the medical oversight of Dr. Cardenas, the precision of TPI, the structural correction of chiropractic care, and the holistic support of rehabilitation and functional medicine—allows us to take our patients on a complete journey from pain and dysfunction to lasting health and optimal performance. We don’t just chase the pain; we dismantle the entire pathological process and rebuild a stronger, more resilient foundation.

Comparing TPI with Other Regenerative Injections: Prolotherapy and PRP

Patients often ask about other types of injections they may have heard of, such as Prolotherapy and Platelet-Rich Plasma (PRP). It’s important to understand the distinctions, as these treatments have different goals and mechanisms.

• Prolotherapy: This involves injecting a mild irritant solution (often a dextrose solution) into ligaments or tendons where they attach to the bone. The goal is to intentionally create a mild, localized inflammatory response to stimulate the body’s natural healing cascade, encouraging the growth of new, stronger connective tissue. It is primarily used to treat joint instability and ligament laxity. Sometimes, ozone is used in conjunction with this, a practice known as Prolozone.
• Platelet-Rich Plasma (PRP): This is a more advanced regenerative therapy. A sample of the patient’s own blood is drawn and spun in a centrifuge to concentrate the platelets. This platelet-rich plasma, which is full of powerful growth factors, is then injected into an area of injury (like a torn tendon, arthritic joint, or damaged ligament) to accelerate tissue repair and regeneration dramatically.

While Prolotherapy and PRP are powerful tools for healing damaged connective tissues, using them for standard myofascial trigger points is often overkill. A trigger point is a neuromuscular issue within the muscle belly, not a tear in a ligament or tendon. The combination of a local anesthetic and an anti-inflammatory like Sarapin is perfectly suited to address the specific pathology of a trigger point—breaking the pain-spasm cycle and reducing localized inflammation. Injecting expensive and complex biologics like PRP into a simple trigger point is generally not a cost-effective or necessary first-line treatment. We reserve these powerful regenerative therapies for conditions where there is significant tissue damage that requires robust biological repair.

Conclusion: A Modern, Evidence-Based Path to Pain Resolution

Myofascial pain syndrome, driven by trigger points, is a pervasive and often debilitating condition. However, with modern diagnostic techniques and a sophisticated, integrative treatment approach, it is highly treatable. Trigger Point Injection therapy, when performed with precision, anatomical expertise, and the right therapeutic agents, serves as a cornerstone of our treatment protocol. By physically disrupting scar tissue with the “star pattern” technique and chemically breaking the pain-spasm cycle with a synergistic blend of lidocaine and Sarapin, we can provide rapid and profound relief.

At Injury Medical Clinic, this procedure is never performed in a vacuum. It is thoughtfully integrated into a broader care plan under the collaborative medical direction of Dr. Maria Cardenas, MD. We combine TPI with expert chiropractic care to correct underlying biomechanical faults and a comprehensive rehabilitation program to restore muscular balance and function. This multifaceted approach ensures that we are not just silencing the pain but truly resolving its cause, empowering our patients to return to a life of pain-free movement and optimal well-being.

References

• Bhole, M. V., Manson, A. L., Seneviratne, S. L., & Misbah, S. A. (2012). IgE-mediated allergy to local anesthetics: separating fact from perception: a UK perspective. British Journal of Anesthesia 108(6), 903–911. https://doi.org/10.1093/bja/aes162

Disclaimer: This post is for educational purposes only and does not constitute medical advice. The information provided is based on the clinical experience and perspective of Dr. Alex Jimenez and the collaborative model at Injury Medical Clinic. Please consult with a qualified healthcare professional for diagnosis and treatment of any medical condition.

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