Thromboembolism after pelvic surgery is usually from the veins -

• MC site of DVT: Calf veins (soleal veins) • MC site thrombosis for pulmonary thromboembolism: Femoropopliteal veins • Calf veins are the most common site of DVT in post-operative period, but risk of embolism from calf venous thrombosis is extremely low. • DVT of femoropopliteal veins are the most common site of pulmonary thromboembolism.