Trigger points or myofascial trigger points
Trigger points, also known as myofascial trigger points, are one of the most common—yet often underestimated—causes of chronic musculoskeletal pain. These hyper-irritable areas within muscles and fascia not only generate intense local pain but also referred pain in distant areas, explaining many atypical clinical presentations: tension headaches, low back pain, pelvic pain, or even functional digestive and urinary disorders.
Given that chronic pain affects more than 20% of the adult population in France, a thorough understanding of trigger points is essential for effective, non-invasive treatment. This comprehensive guide, based on the most recent clinical data from international consensus groups (Travell & Simons, Simons Academy, and the 2024–2026 studies on manual and instrumental therapies), serves as a complete reference.
It details the pathophysiological mechanisms, clinical signs, precise diagnosis, and treatment strategies, with a strong emphasis on osteopathy as a first-line treatment and TECAR therapy as a complementary innovation.
Definition and classification of trigger points
A myofascial trigger point is defined as a hyper-sensitive nodular area located within a taut band of muscle. According to the classic criteria established by Travell and Simons—which have been validated by numerous recent studies—these points exhibit hypersensitivity to pressure and reproduce the patient’s typical pain when palpated. There are two main categories:
- Active trigger points: They cause pain at rest or during activity, with characteristic radiation. They account for the majority of visits to the doctor for chronic pain.
- Latent trigger points: They remain dormant but limit mobility and muscle strength. They can be triggered by stress, overexertion, or minor trauma.
Trigger points can affect all skeletal muscles, from the trapezius to the pelvic floor muscles, including the piriformis and the obturator internus. Their presence is part of the broader context of myofascial syndrome, a condition recognized by the WHO since the 1980s and confirmed by advances in muscle ultrasound and surface electromyography.
Pathophysiological mechanisms: Why do trigger points develop?
The formation of a trigger point results from a complex dysfunction at the level of the motor endplate. The most recent studies (2024–2026) highlight several intertwined mechanisms:
- Motor endplate dysfunction: Excessive release of acetylcholine leading to persistent localized sarcomeric contraction.
- Tissue ischemia and hypoxia: Muscle spasm reduces blood flow, creating an acidic environment rich in pain-inducing substances (bradykinin, substance P, pro-inflammatory cytokines).
- Peripheral and central sensitization: Nociceptors become hypersensitive; over time, central sensitization in the spinal cord and brain amplifies the perception of pain.
- Fascial abnormalities: Fasciae, which act as true “transmission networks,” transmit tension and keep muscle bands contracted.
These phenomena explain why the pain becomes chronic: an untreated trigger point creates a vicious cycle of low-grade inflammation, muscle fatigue, and postural compensation. In the pelvis, trigger points in the levator ani or coccygeus muscles are frequently associated with pelvic congestion syndrome, exacerbating referred pain to the lower abdomen, vulva, or rectum.
Symptoms and Mapping of Referred Pain
The symptoms of trigger points are varied and often misleading. The pain is typically:
- Dull, deep, or burning.
- Made worse by stress, cold, maintaining a certain position, or physical exertion.
- Accompanied by muscle stiffness, weakness, or limited mobility.
The key characteristic remains referred pain: the patient feels pain at a distance from the trigger point itself. Classic examples validated by mapping atlases (Travell and Simons):
- Trigger point in the upper trapezius muscle → temporal or occipital headache mimicking a migraine.
- Sternocleidomastoid trigger point → dizziness, tinnitus, or orbital pain.
- Trigger point in the pectoralis major muscle → breast pain or pain in the front of the chest.
- Pelvic trigger points (levator ani, internal obturator) → dyspareunia, cystalgia, proctalgia, or lower back pain.
- Piriformis trigger point → pseudodiscogenic sciatica.
These radiations explain why many patients consult several specialists in vain before the myofascial cause is identified.
Causes and risk factors
Trigger points are most often caused by a combination of factors:
- Direct or indirect trauma (falls, whiplash, childbirth, surgery).
- Overuse or prolonged postures (working at a computer, driving).
- Chronic stress and overall muscle tension (bruxism, shallow chest breathing).
- Postural disorders (hyperlordosis, leg length discrepancy, diaphragmatic dysfunction).
- Metabolic factors (magnesium deficiency, vitamin D deficiency, hypothyroidism).
- Inactivity or, paradoxically, overtraining.
In Versailles and the Yvelines region, where the working population often combines a sedentary work environment with intense physical activity, these factors are particularly prevalent. Women who have given birth multiple times or who are going through menopause are at increased risk of pelvic trigger points due to hormonal and postural changes.
Accurate diagnosis of trigger points
The diagnosis is based primarily on a manual clinical examination, which is considered the gold standard:
- Systematic palpation to locate the taut band and the tender nodule.
- Reproduction of the usual pain (known as the "jump sign" or "local twitch response").
- Confirmed by a reduction in pain following ischemic compression or stretching.
High-resolution muscle ultrasound and elastography now allow for objective visualization of hypoechoic areas. MRI or electromyography are used to complete the evaluation when an organic pathology must be ruled out (herniated disc, osteoarthritis, endometriosis). A comprehensive osteopathic assessment evaluates associated dysfunctions of the pelvis, spine, and diaphragm, which are essential for a causal approach.
Standard treatments: Osteopathy and TECAR therapy as first-line treatments
The management of trigger points emphasizes conservative and non-invasive methods.
Osteopathy: A Leading and Foundational Treatment
Osteopathy plays a central role thanks to its specific myofascial release techniques. Techniques such as ischemic pressure, positional release (strain-counterstrain), and active or passive trigger point release allow for rapid relaxation of tight muscle bands. In pelvic regions, endocavitary approaches (with informed consent) directly target deep muscles. Osteopathy simultaneously corrects joint (sacroiliac, coccygeal) and postural dysfunctions that perpetuate trigger points. Recent clinical studies (2025–2026) report a 70–85% reduction in pain after 4 to 8 sessions, with lasting improvement in mobility and muscle strength. This comprehensive approach prevents chronicity and recurrence.
TECAR Therapy: A Complementary Technological Innovation
TECAR (Capacitive and Resistive Energy Transfer) represents a major breakthrough in the treatment of trigger points. By emitting high-frequency currents (448 kHz), it generates a deep, non-thermal effect that:
- Improves microcirculation and tissue oxygenation.
- Speeds up the elimination of acidic metabolites.
- Reduces inflammation and muscle spasms without causing excessive pain.
- Promotes fascial and muscular regeneration.
When applied in capacitive mode to soft tissues or in resistive mode to denser structures, TECAR allows for precise treatment of trigger points, including those in the pelvic region. Sessions lasting 20 to 30 minutes, performed 1 to 2 times per week, provide rapid relief from the very first application and enhance the effects of osteopathy. This combination of osteopathy and TECAR offers superior results compared to isolated approaches, particularly in patients with chronic or refractory trigger points.
Other complementary approaches
- Physical therapy using dry needling or post-isometric stretching.
- Botulinum toxin injections or prolotherapy in severe cases.
- Stress management (sophrology, mindfulness) and daily diaphragmatic breathing exercises.
- Self-care at home using myofascial release balls and self-stretching.
Prevention and Self-Management of Triggers
Prevention relies on maintaining good posture daily, engaging in balanced physical activity (yoga, Pilates, walking), staying well-hydrated, and managing stress. Regular stretching of high-risk areas (trapezius, psoas, pelvic floor) and an annual osteopathic check-up help maintain myofascial balance. Patients in Versailles and the surrounding area can easily incorporate these habits into their routine thanks to tailored local care.
Conclusion: Toward a Comprehensive and Sustainable Approach to Trigger Points
Myofascial trigger points are no longer inevitable. Thanks to a detailed understanding of their pathophysiology and the synergistic combination of osteopathy and TECAR therapy, complete resolution or significant improvement is now achievable for the vast majority of patients. This comprehensive guide, designed as an up-to-date reference resource for 2026, supports every step of the treatment journey: from accurate diagnosis to relapse prevention. For individuals suffering from chronic pain related to trigger points in Versailles and the Yvelines region, a consultation at an osteopathic practice specializing in pelvic-perineal medicine and instrumental therapies offers a personalized, non-invasive, and highly effective solution. Restoring muscle function and quality of life requires an expert, multidisciplinary approach.
