Trauma to the leg or to the hips and pelvis might cause a clot, but we were not told of any leg injury.
Alternatively, is it possible that the clot in question is one in the lining of the brain that can form after head trauma.
Clinton was hospitalized to treat a ‘clot’ Sunday after a recent illness, fainting, and concussion.
A soft, nonrigid, insoluble mass formed when blood or lymph gels. v. clot·ted, clot·ting, clots
A soft insoluble mass formed when blood or lymph gels. During blood clotting, white blood cells, red blood cells, platelets, and various clotting factors interact in a cascade of chemical reactions initiated by a wound. When a body tissue is injured, calcium ions and platelets act on prothrombin to produce the enzyme thrombin. Thrombin then catalyzes the conversion of the protein fibrinogen into fibrin, a fibrous protein that holds the clot together. An abnormal clot inside the blood vessels or the heart (a thrombus or an embolus) can obstruct blood flow.