Comparison of ultrasonography and X-ray in the assessment of peripheral joints invovement in psoriatic arthritis / 中华超声影像学杂志

ABSTRACT

Objective To compare and investigate the role of ultrasonography and X-ray examination in the assesment of peripheral joints in psoriatic arthritis (PsA).Methods One hundred and twenty-five groups joints of twenty-five patients with PsA underwent ultrasonography and X-ray examination,including knee joints,wrist joints,ankle joints,metacarpophalangeal joints and interphalangeal finger joints,metatarsophalangeal joints and interphalangeal toe joints.The results of the two examinations were analysed and compared.Results The numbers of patients with abnormal joints in knee joints,wrist joints,ankle joints,metacarpophalangeal/interphalangeal finger joints,and metatarsophalangeal/interphalangeal toe joints were 9,9,9,10,and 11,respectively.Ultrasonography found more abnormal joints than X-ray ( P ＜0.01 ).The cardinal ultrasonographic manifestations of PsA were synovitis (29),tendonitiS (16),and bone erosion (7).The cardinal X-ray manifestations of PsA were bone destruction (11 ),periarticular osteoporosis (5),periosteal reaction (3) and periarticular soft tissue swelling (4).Ultrasonography found more synovium and tendon abnormalities than X-ray (P ＜ 0.01 ),and X-ray found more bone abnormalities than ultrasonography ( P ＜0.01).Conclusions Ultrasonography has the ability of demonstrating early changes of peripheral joints in PsA.The combination of ultrasonography and X-ray can make the diagnosis of PsA more correct and comprehensive.