Plantar Fasciitis is caused by strain to the Plantar Fascia muscle under the foot. The cause could be degenerative or it could be from a previous injury. It can occur if you wear poor footwear, for example shoes with thin soles or that are not supportive enough. Other causes include:
- Going back to strenuous activity after a long period of rest
- Having a short calf muscle
- Having poor ankle range of motion
Middle-aged people are most commonly affected.