Occlusion of the left common iliac artery and consecutive thromboembolism of the left popliteal artery following anterior lumbar interbody fusion

We report on a case of occlusion of the left common iliac artery due to art eriosclerosis and consecutive thrombotic occlusion of the left popliteal ar tery in a 52-year-old man following anterior retroperitoneal interbody fusi on of L4-S1. Initial symptoms included leg pain and numbness of the lateral shank, which were thought to be a result of lumbar nerve root irritation f rom surgery. Diagnosis was not made until 13 days after surgery, when motor deficits were observed. Angiography showed occlusion of the left common il iac artery and thromboembolism of the left popliteal artery. After thromboe ndarterectomy of the common iliac artery and thrombectomy of the popliteal artery, motor deficits of the left foot were resolved whereas symptoms of p ain and sensory deficits continued. Spine surgeons should be aware of this rare complication in cases of postoperative leg pain or of neurologic defic its in the lower extremity after anterior lumbar interbody fusions.