What Causes Repetitive Strain Injury?

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Why and How Does Injury Occur?

Healthy, Fluid Tissue Rigid, Dense Fascia

Healthy, Fluid Fascia              Rigid, Dense Fascia

RSI occurs when connective tissue, also known as fascia, including tendons and ligaments, becomes dense and contracts around nerves, blood vessels and muscles as a result of sustained pressure and strain.

All of the RSI Risk Factors create pressure and strain.

RSI  Basic Anatomy & Symptoms

Nerves arm hand


Tightness of the connective tissue anywhere along the pathways of the nerves and blood vessels can cause symptoms of injury.

This image illustrates the major nerves in the arms and the areas of the hand in which symptoms such as pain, numbness and tingling are felt.

The same situation exists in the legs.  The major nerves in the lower body include: tibial, femoral, sciatic, peroneal and obturator nerves.

Pressure, such as sitting for extended periods of time or crossing the legs, can cause symptoms of injury in the lower legs and feet as the nerves, blood vessels and muscles are affected by tightening in the connective tissue surrounding them.



Symptoms of Injury

Stiff and/or Sore - Neck, Shoulders, Arms
Painful, Numb or Tingling - Legs, Feet, Hand, Fingers

Browse our Site Map for more detailed information about symptoms of injury, injury risk factors, types of injury and the PRSI Break solution.

Prevent Injury - Stop Pain - Treat The Cause

To prevent injuries, the connective tissue must be kept flexible, fluid and healthy.  Preventive action needs to be as consistent as the RSI risk behaviors.

The cause of Repetitive Strain Injuries is connective tissue tightness.  Stretches that will treat the cause must be done slowly, just to the point of resistance, then held at that point long enough for the fibers in the tissue to release their tension.

Stretching from head to toe regularly throughout the week has a cumulative effect on tissue fluidity.

Use The Only Stretch Program Specifically Designed To Release Tightness In Connective Tissue.

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