Anterolateral knee pain related to thrombosed lateral patellar retinaculum veins: Unusual anterolateral pain of the knee.
Résumé
We describe the ultrasound (US) features of venous thrombosis involving the lateral patellar retinaculum (LPR) veins presenting as anterolateral knee pain. Four male patients, aged 16 to 35 years, were referred for lateropatellar pain with focal tenderness. In two cases, physical examination also demonstrated soft tissue swelling at the anterolateral aspect of the knee. In all four cases, US showed subcutaneous fat edema surrounding a thrombosis involving the LPR veins. Magnetic resonance imaging performed before US in one patient revealed only nonspecific subcutaneous fat edema and was therefore unable to make the correct diagnosis of LPR venous thrombosis.
Mots clés
Humans
knee
Adolescent
Adult
Young Adult
Male
Ultrasonography/*methods
Knee Joint/*diagnostic imaging
Collateral Ligaments/blood supply/*diagnostic imaging
Edema/diagnostic imaging/etiology
lateral patellar retinaculum
musculoskeletal system
Pain/*etiology
soft tissue mass
ultrasonography
Veins
venous thrombosis
Venous Thrombosis/*complications/*diagnostic imaging