title: Anomalous positioning of femoral artery and vein--even 'constant' landmarks can be inconsistent.
authors.forename: G
authors.initials: G
authors.lastname: Hocking
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000379:methods; D002404:Catheterization / Q000379:methods; D005263:Femoral Artery / Q000002:abnormalities*; D005267:Femoral Nerve / Q000000981:diagnostic imaging; D005268:Femoral Vein / Q000002:abnormalities*; D006801:Humans; D009407:Nerve Block / Q000379:methods*; D018084:Ultrasonography, Interventional / Q000379:methods