PMC

Comparison between group I and II as regard percentages of patients who had elevated serum cartilage oligomeric matrix protein and ultrasound entheseal abnormalities.

(A and C) Achilles tendon shows normal ultrasound appearance with thickness of about 3.5 mm at its insertion (normal less than 5.3 mm), no related fluid or abnormal vascularity seen. B) Achilles enthesopathy and retrocalcaneal bursitis, the Achilles insertional tract appears thickened (between arrowheads) and heterogeneously hypoechoic. A calcification (arrow) is evident within the distal portion of the tendon. The retrocalcaneal bursa is enlarged by fluid collection (asterisk). D) Plantar fasciitis, insertional tract is thickened (between arrowheads) and heterogeneously hypoechoic with thin linear calcification (arrow).