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Concepts

Fascia lexicon

The core terms that recur across research, clinic, and movement — briefly explained.

Collagen
Anatomy
The most abundant protein in connective tissue — roughly 30% of the body's total protein — and fascia's primary building block.
Densification
Clinic
Thickening of loose connective tissue as hyaluronan grows sticky — an early, reversible step toward pain and stiffness.
Elastic recoil
Movement
Fascia's ability to store and release energy — the basis of jumping, running, and efficient gait.
Elastin
Anatomy
The rubber-like protein that lets connective tissue return to its original shape after being stretched.
Fascia
Anatomy
The continuous fibrous connective-tissue network that wraps, separates, and connects every muscle, organ, nerve, and vessel.
Fasciacyte
Physiology
A specialised fibroblast that produces hyaluronan and regulates glide between fascial layers.
Fascial adhesion
Clinic
An area where adjacent fascial layers have lost their glide — often after injury, inflammation, or immobilisation.
Fascial lines
Mechanics
Continuous chains of connective tissue that coordinate posture and movement across the body.
Fascial stretch
Movement
Slow, multi-joint movements that load fascial chains rather than isolated muscles.
Fibroblast
Physiology
The cell that produces collagen, elastin, and ground substance — fascia's maintenance crew.
Fuzz
Anatomy
Gil Hedley's popular name for the loose fibres between muscle and fascia that thicken in stillness.
Ground substance
Anatomy
The gel-like matrix between fibres that governs how easily fluid, nutrients, and signals move through connective tissue.
Hyaluronan
Physiology
A lubricating molecule between fascial layers whose viscosity determines how smoothly the layers glide.
Hydration
Physiology
The fluid content of connective tissue's ground substance — directly tied to how smoothly fascia glides and signals.
Inflammation
Physiology
The body's repair signal — acute is necessary, chronic remodels fascia and drives long-term pain.
Interoception
Physiology
The sense of the body's internal state — richly supplied by free nerve endings in fascia.
Manual therapy
Clinic
Hands-on therapy that changes fascia's hydration, glide, and sensory tone — not by ‘breaking up’ tissue.
Mechanotransduction
Mechanics
The process by which cells translate mechanical load into biochemical signals.
Myofascia
Anatomy
Muscle and its surrounding fascia treated as a single functional unit of force transmission.
Myofascial release
Clinic
A manual technique that seeks softer tissue response via slow, sustained pressure.
Nociception
Physiology
The sensory system that detects harmful stimuli — closely tied to fascia's rich nerve supply.
Plantar fascia
Anatomy
The thick fascial sheet under the foot that stores and releases elastic energy with every stride.
Proprioception
Physiology
The body's sense of position and movement — relying on mechanoreceptors in fascia, tendons, and joints.
Tensegrity
Mechanics
A stability model where tension-bearing fascia suspends compression-bearing bones in balance.
Thixotropy
Mechanics
The property by which fascia softens under sustained gentle load and stiffens at rest.
Thoracolumbar fascia
Anatomy
The large fascial sheet of the lower back — innervated like the cornea and often implicated in lumbar pain.
Viscoelasticity
Mechanics
A material that behaves both like a fluid (flows under pressure) and a solid (returns after stretch).
Concepts — The Fascia Guide