Figure 1. a–c.

Different patterns of subclinical US enthesitis. Longitudinal scan of the Achilles tendon showing enthesitis in a male patient with psoriasis aged 58 years. Note the enthesophytes and swelling of the tendon with the loss of its normal fibrillar pattern (a). Longitudinal scan of plantar aponeurosis showing abnormal entheseal insertion into the calcaneus bone with an increased hypoechogenecity of the fascia (b). Longitudinal scan of quadriceps tendon showing thickening of the tendon and enthesophytes at the patellar side in a female patient with psoriasis aged 44 years (c).