Plantar Fasciitis

Plantar fascia is comprised of thick band of tissue extending posteriorly from the calcaneus to the metatarsal heads. It has central prominent fibers with medial and lateral components.
Plantar fasciitis is an inflammation of plantar fascia and surrounding structures. There are several causes, which include mechanical, degenerative, and systemic factors.
Mechanical causes are pes cavus, pronated foot and externally rotated lower extremity.
Degenerative causes are atrophy of heel pad and increase foot pronation due to old age.
Systemic factors are rheumatoid disorders.

22 years old male with history of pain and tenderness in the heel of right foot.
Coronal protein density and sagittal fast spin echo T2 W images demonstrate focal thickening of plantar fascia and edema in the flexor digitorum brevis and subcutaneous tissue.