05/22/2026
Fascia!!
12 Interesting Things About Thoracolumbar Fascia
1. Thoracolumbar fascia connects directly with no fewer than 7 myofascial lines and coordinates directly with at least two more. More on these coming soon.
2. It consists of multiple layers of fibrous fascia that vary in thickness and density.
3. The thoracolumbar fascia inserts into the sacrum at the base of the spine and the iliac crest of the pelvis, and it merges with 12 different muscles on each side of the spine.
4. It originates from the nuchal ligament and has additional attachments to the spinous processes of the thoracic and lumbar vertebrae.
5. It acts as a central structure that distributes mechanical forces, supporting the integrity of the back.
6. Muscles that attach to and are embedded within the thoracolumbar fascia can increase its tension.
7. Tension within the fascia can be increased by several involuntary factors, such as the contraction of myofibroblasts in response to mechanical stress or during the healing process. Increased viscosity of the interstitial fluid, adhesions, and tissue thickening can also contribute to heightened fascial tension.
8. The thoracolumbar fascia works with the lateral and ventral abdominal muscles, as well as other structures within the thorax, to create a corset-like effect that enhances intra-abdominal pressure. This coordination helps stabilize the thorax and reduce the load on the vertebrae.
9. The equine thoracolumbar fascia is richly innervated with sensory receptors that respond to mechanical pressure or distortion. These receptors contribute to the horse’s ability to sense and coordinate body movement, posture, and balance.
10. The thoracolumbar fascia distributes mechanical stress across the thoracolumbar spine and pelvis, minimizing localized stress and reducing the risk of injury.
11. The weight of the rider, combined with the fit and placement of the saddle, directly interacts with the thoracolumbar fascia.
12. The thoracolumbar fascia and its integrated muscles can only perform their functions correctly if the fascia surrounding them is mobile enough to allow full sensory input, coordination, and function.
https://koperequine.com/thoracolumbar-fascia-in-horses-function-and-importance/