Table 2.

Main studies assessing entheseal pathology in psoriasis (PsO) patients without psoriatic arthritis (PsA) by ultrasound (US)

Authors	Year	PsO patients (n)	Control group (n)	Control group characteristics	Studied entheses	PD mode	Probe frequency
Gisondi et al. [79]	2008	30	30	Patients with dermatological diseases other than psoriasis	QT, proximal and distal PT, AT, and PF	No	10–15 MHz
Gutierrez et al. [80]	2011	45	45	Healthy controls	QT, proximal and distal PT, AT, and PF	Yes	6–18 MHz
Naredo et al. [81]	2011	136	46	Patients with dermatological diseases other than psoriasis	Deep finger flexor tendons, proximal and distal PT, AT, and PF	Yes	8–14 MHz
Zuliani et al. [82]	2019	40	20	Healthy controls	CET, QT, proximal and distal PT, AT, and PF	Yes	6–18 MHz

Abbreviations. AT = Achilles tendon insertion, CET = common extensor tendon insertion into the lateral epicondyle, PD = power Doppler, PF = plantar fascia insertion, PT = patellar tendon insertion, QT = quadriceps tendon insertion, TT = triceps tendon insertion