title: Psoriatic arthritis of the foot and ankle: analysis of joint involvement and diagnostic errors.
abstract: Forty-two patients with psoriatic arthritis arthritis who were referred to a tertiary medical center from 1983 to 1987 were reviewed. The foot and/or ankle was the most common site of joint or bone involvement, (N = 36, 86%). Twenty-six of these patients demonstrated bilateral involvement. The foot and ankle was the most common site of initial arthritis (N = 23, 55%). Errors in patient diagnosis were noted and analyzed. Eight patients with foot and ankle involvement were diagnosed and treated for either gout or compression of a digital nerve. Major causes for misdiagnosis included failure to identify psoriatic skin lesions and failure to associate foot and ankle symptoms with psoriatic arthritis.
authors.affiliation: Hackensack Medical Center, NJ.
authors.forename: W A
authors.initials: WA
authors.lastname: Hammerschlag
authors.forename: J R
authors.initials: JR
authors.lastname: Rice
authors.forename: D S
authors.initials: DS
authors.lastname: Caldwell
authors.forename: J L
authors.initials: JL
authors.lastname: Goldner
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000842:Ankle; D001168:Arthritis / Q000150:complications; D015535:Arthritis, Psoriatic / Q000150:complications / Q000175:diagnosis* / Q000209:etiology; D003951:Diagnostic Errors; D005260:Female; D005534:Foot Diseases / Q000150:complications / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000209:etiology; D012189:Retrospective Studies