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Clin Exp Rheumatol. 2012 Mar-Apr;30(2):152-5. Epub 2012 Apr 13.

Ultrasound imaging for the rheumatologist XXXVIII. Sonographic assessment of the hip in psoriatic arthritis patients.

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Rheumatology Unit, University of Pisa, Italy.



The aims of our study were to investigate the prevalence of ultrasound (US) pathological abnormalities in the hip of psoriatic arthritis (PsA) patients and compare them with the clinical findings.


Sixty-five PsA patients were enrolled in the study. Bilateral examination of the hip was performed to detect joint effusion, synovial hypertrophy, irregularity of femoral head and neck profile as seen in erosions and/or osteophytes.


Joint effusion was detected in 20 out of 130 hips (15%). Synovial hypertrophy was present in 12 out of 20 hips (60%) associated with effusion (9.3% of all hip joints) and only 1 of them showed PD signal. Small effusion without synovial proliferation was imaged in 8 out of 20 hips (40%). On the whole 14 out of 65 patients (21%) had joint effusion with or without synovial hypertrophy using US. No erosions of the femoral head and neck profile were detected whilst osteophytes were imaged in 27 joints (20%). No US abnormalities were demonstrated in 18 hips with pain/tenderness on physical examination, whilst joint effusion was seen in 8 joints which were asymptomatic.


US is a useful imaging method to evaluate hip involvement in PsA that could be integrated into routine PsA management even if patients do not complain of hip involvement.

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