Psoriatic and seronegative inflammatory arthropathy associated with a traumatic onset: 4 cases and a review of the literature.

Although a relationship between psoriatic arthritis or other spondyloarthropathies and trauma is discussed in the literature and rheumatology textbooks, there are few well documented case reports that substantiate this association. We describe 3 patients who developed psoriatic arthritis and a 4th who developed unilateral spondyloarthropathy rapidly after trauma. The argument that the arthritis in these cases was precipitated by trauma rests upon the contiguous sequential temporal relationship between the 2 events and the onset of arthritis (and psoriasis) at the sites of trauma.