title: Delayed diagnosis of a pseudoaneurysm with recurrent hemarthrosis of the knee joint.
abstract: This is a case report of recurrent hemarthrosis of the knee joint over 3 months. The patient, a 47-year-old male had three arthroscopic procedures with multiple joint punctures over a 3-month-period prior to our initial consultation. The first procedure (arthroscopic synovectomy) was done for suspected infection following a series of hyaluronic acid injections. Recurrent hemarthrosis developed subsequent to this. Upon further evaluation, a pseudoaneurysm of the superior middle genicular artery was detected and successfully treated with selective angiographic embolization.
authors.affiliation: Department of Orthopaedic Surgery, Phillips University Marburg, Baldinger Strasse, 35043, Marburg, Germany. becher.chris@web.de
authors.forename: Christoph
authors.initials: C
authors.lastname: Becher
authors.forename: Ulrike L
authors.initials: UL
authors.lastname: Burger
authors.forename: Jens R
authors.initials: JR
authors.lastname: Allenberg
authors.forename: Guenter W
authors.initials: GW
authors.lastname: Kaufmann
authors.forename: Hajo
authors.initials: H
authors.lastname: Thermann
mesh_terms: D017541:Aneurysm, False / Q000175:diagnosis*; D001182:Arthroscopy / Q000009:adverse effects*; D003952:Diagnostic Imaging; D004621:Embolization, Therapeutic; D006395:Hemarthrosis / Q000209:etiology* / Q000628:therapy; D006801:Humans; D007719:Knee Joint / Q000473:pathology* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D012008:Recurrence