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Updated: Jul 3, 2026

Knee Arthrocentesis in Adults
Published on: February 25, 2022
Popliteal venous thrombosis in juvenile arthritis with Baker cysts: report of 3 cases
Frank Dressler1, Cornelia Wermes, Eckart Schirg
1Department of Pediatrics, Medizinische Hochschule Hannover, Hannover, Germany. dressler.frank@mh-hannover.de.
Abstract:
Three pediatric patients with different illnesses leading to knee arthritis and large Baker cysts and additional calf swelling are reported. Calf swelling was due to true popliteal venous thrombosis and not to the much more common cause of pseudothrombophlebitis. Careful ultrasound examination can differentiate these two causes of calf swelling. Even though all our patients had risk factors for thrombophilia, we do not recommend routine thrombophilia work-up for all arthritis patients in the absence of thrombosis.
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