Pseudoaneurysms in the femoral artery seldom occur spontaneously. Commonly they occur secondarily to trauma or as a complication to surgery or angiography. This study reports the occurrence of a pseudoaneurysm in the left common femoral artery. The patient, a 54-year-old woman, had undergone leftsided hip replacement five years before and several subsequent operations on the left hip due to dislocation and loose cup. She was admitted with a palpable non-pulsating mass in her left inguinal region and pain and cyanosis in her left lower limb. Ultrasound and angiography showed a pseudoaneurysm with occlusion of the popliteal, the tibial, and the peroneal arteries. The patients was successfully treated with actilysis for 48 hours and subsequent vascular surgery.