Kane D, Greaney T, Bresnihan B, Gibney R, FitzGerald O
Department of Diagnostic Imaging, St. Vincent's Hospital, Dublin, Ireland.
J Rheumatol. 1999 Aug;26(8):1746-51.
To determine the ultrasonographic features of dactylitis in psoriatic arthritis (PsA).
Seventeen patients with PsA presenting with a total of 25 dactylitic fingers and toes underwent ultrasonographic examination of the digits with a 7.5 or 10 MHz transducer.
Flexor tenosynovitis was present in 96% (24/25) of dactylitic digits. Articular synovitis was present in 52% (13/25) of dactylitic digits. Subcutaneous soft tissue enlargement was present in all digits. The presence of articular synovitis in a dactylitic finger on ultrasonography correlated with the presence of joint space narrowing and periostitis on plain radiography.
Dactylitis in PsA is due to both flexor tenosynovitis and articular synovitis. Dactylitis in PsA has an increased incidence of articular synovitis, which was associated with the development of articular damage as assessed by plain radiography.
确定银屑病关节炎（PsA）中趾（指）炎的超声特征。
17例PsA患者共25个趾（指）发生趾（指）炎，使用7.5或10MHz探头对其趾（指）进行超声检查。
96%（24/25）的趾（指）发生屈肌腱腱鞘炎。52%（13/25）的趾（指）发生关节滑膜炎。所有趾（指）均存在皮下软组织肿胀。超声检查发现趾（指）关节滑膜炎与X线平片上关节间隙变窄和骨膜炎相关。
PsA中的趾（指）炎是由屈肌腱腱鞘炎和关节滑膜炎共同引起的。PsA中趾（指）炎的关节滑膜炎发生率增加，这与X线平片评估的关节损伤发展有关。
