Objective. To investigate the clinical value of high-frequency ultrasound in psoriatic arthritis (PSA). The study subjects were 32 outpatients and inpatients with PSA who were pathologically diagnosed from January 2018 to September 2020, including 11 males and 21 females, aged 25–70 years old, with an average of (49.8 ± 14.0) years old. All patients underwent ultrasound and physical examination, including the small joints of the hands and feet on both sides, nails, and the main attachment points of the lower limbs (quadriceps tendon, patellar ligament, Achilles tendon, and plantar fascia attachment). The involvement of these joints, attachment points, and nails was observed and counted, respectively, and statistically analyzed. Results. Physical examination revealed 406 (406/1792, 22.66%) joint lesions, 79 (79/320, 24.69%) attachment inflammation, and 84 (84/320, 26.25%) nail lesions. Ultrasonography revealed 492 (492/1792, 27.46%) joint lesions, 166 (166/320, 51.88%) attachment inflammation, and 203 (203/320, 63.44%) nail lesions. The positive rate of ultrasound examination was higher than that of physical examination (). Conclusion. Ultrasonography can detect joint, attachment, and nail lesions earlier than physical examination in patients with PSA. Ultrasonography is of great value in the diagnosis of PSA.

中文翻译：

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高频超声在银屑病关节炎诊断中的临床价值

目标。探讨高频超声在银屑病关节炎（PSA）中的临床价值。研究对象为2018年1月至2020年9月病理确诊的PSA门诊和住院患者32例，其中男11例，女21例，年龄25～70岁，平均（49.8±14.0）岁。所有患者均接受超声和体格检查，包括两侧手足小关节、指甲、下肢主要附着点（股四头肌腱、髌韧带、跟腱、足底筋膜附着点）。分别观察和计数这些关节、附着点和指甲的受累情况，并进行统计分析。结果. 体格检查发现 406 个（406/1792，22.66%）个关节病变，79 个（79/320，24.69%）个附着点炎症，84 个（84/320，26.25%）个指甲病变。超声检查显示 492 (492/1792, 27.46%) 关节病变，166 (166/320, 51.88%) 附件炎症和 203 (203/320, 63.44%) 指甲病变。超声检查阳性率高于体格检查（）。 结论。超声检查可以比体格检查更早地发现 PSA 患者的关节、附件和指甲病变。超声检查对PSA的诊断具有重要价值。