Synovial joints have a physiological congruent position, a resting alignment where the contact surfaces are distributed evenly and the load is shared across the widest possible area. When a joint is consistently loaded outside this congruent position because of postural dysfunction, the contact stress is concentrated on a smaller surface area. This elevated localised pressure stimulates inflammatory responses, accelerates cartilage wear, activates nociceptors, and produces the chronic pain that is characteristic of conditions such as patellofemoral syndrome, hip labral impingement, and lumbar facet arthritis.
The Load-Pain-Inflammation Cycle
Sustained abnormal loading creates a self-perpetuating cycle. The initial mechanical stress stimulates local inflammation. The inflammation sensitises nociceptors, lowering the pain threshold. The pain triggers guarding and altered movement patterns. The altered movement patterns change loading still further, often to positions that reduce acute pain but increase chronic mechanical stress. This is why many adults with chronic pain notice that the pain moves, changes character, or migrates as they make compensatory adjustments.
Why Symptom Management Fails Without Structural Correction
Anti-inflammatory medication, cortisone injections, manual therapy, and most conventional physiotherapy are directed at the inflammatory response and the pain experience rather than at the mechanical loading that is generating them. They can provide meaningful short-term relief, but if the postural dysfunction that created the abnormal loading is not corrected, the tissue continues to be subjected to the same stress. The clinical outcome is the characteristic pattern of temporary improvement followed by recurrence, which is the defining feature of unresolved chronic pain.
Sources
- Mow, V.C., & Huiskes, R. (2005). Basic Orthopaedic Biomechanics and Mechano-Biology. Lippincott Williams and Wilkins.
- van den Berg, F. (2010). Fascia and ligaments: tensegrity and biotensegrity. Journal of Bodywork and Movement Therapies, 14(1), 1-2.
- Lederman, E. (2010). The myth of core stability. Journal of Bodywork and Movement Therapies, 14(1), 84-98.