==Modalities==
===X-ray===
*[[X-ray of leg length in children]]
===Ultrasonography===
<gallery>
File:Ultrasonography of deep vein thrombosis of the femoral vein -annotated.jpg|link=Ultrasonography of deep vein thrombosis of the lower extremity|[[Ultrasonography of deep vein thrombosis of the lower extremity|'''Ultrasonography of deep vein thrombosis''' of the lower extremity]]