Fascial densification

Scientific basis

The notion was proposed to distinguish two situations: a change in the properties of the hyaluronan-rich substance between the layers (densification) and a lasting accumulation of collagen fibers (fibrosis) (Pavan et al., 2014). A later review describes densification as an aggregation of hyaluronan, observable in several organs (Stecco et al., 2022).

It is a mechanistic model drawn from narrative reviews and experimental observations, not a validated diagnostic category: the authors acknowledge the lack of shared criteria. Distinguishing densification from a simple variation in viscosity in a given person remains difficult.

Blue Portance / SBNFA™ reading

The Blue Portance Expert Guide distinguishes five alterations that should not be confused: functional change, densification, adhesion, scar and fibrosis. In the SBNFA™ framework, densification is a functional reading category, referring to a potentially reversible impairment of gliding, distinct from structural remodeling; it is not a consensus medical diagnosis. The hypothesis that varied loading limits its onset is part of the SBNFA™ reading.

Contribution to the analysis of sitting

Seating analysis cannot reveal densification. It observes whether the position allows loaded tissues to glide and change configuration, a condition that the model associates with maintaining their properties.

Not to be confused with

Fascial fibrosis, a lasting accumulation of fibrous matrix; fascial adhesions, an abnormal joining of two surfaces; perceived stiffness, a sensation that can have many causes.

Related terms

Fascial hyaluronan · Fascial gliding

Sources and scope

• Pavan et al. (2014): densification or fibrosis of fascia (Curr Pain Headache Rep)
• Stecco et al. (2022): densification, hyaluronan aggregation in different organs (Bioengineering)