What is metacarpophalangeal joint swelling in psoriatic arthritis? Ultrasound findings and reliability assessment

Cristina Macía-Villa, Sandra Falcao, Marwin Gutierrez, Julio Medina, Hilde Berner Hammer, Eugenio De Miguel

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

OBJECTIVES: To evaluate by ultrasound (US) the frequency and reliability of peritenon extensor tendon inflammation (PTI) and intra articular synovitis (IAS) in metacarpophalangeal joints (MCPj) of psoriatic arthritis (PsA) patients.

METHODS: 27 PsA patients with clinical involvement of MCPj were consecutively included. Presence of PTI and IAS were evaluated by grey-scale (GS) and power Doppler (PD). Longitudinal and transverse 3-5 second videos of US examinations were recorded for reliability assessments by five readers. Consensus on positive US results was achieved when at least three readers agreed.

RESULTS: Clinical swelling was present in 60 joints whereas US detected IAS and/or PTI in 75 MCPj. GS PTI in at least one MCPj was found in 19 patients and 41 joints, concurring with clinical swelling in 30/41. GS IAS in at least one MCPj was found in 23 patients and 63 joints, concurring with clinical swelling in 37/63. The inter-reader reliability was good for PD PTI and moderate for GS PTI.

CONCLUSIONS: Our study identifies that both IAS and PTI cause MCPj swelling, where PTI is almost as frequent as IAS as a cause of swelling. The reliability of PTI is at least as good as for IAS.

Original languageEnglish
Pages (from-to)896-899
Number of pages4
JournalClinical and Experimental Rheumatology
Volume36
Issue number5
Early online date14 Jun 2018
Publication statusPublished - Sep 2018

Keywords

  • psoriatic arthritis
  • ultrasound
  • tendon
  • synovitis
  • arthritis

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