We report the case of a 24 year old male with a chronic rupture of the anterior cruciate ligament inhis left knee. We performed an anterior cruciate ligament reconstruction with four fascicles using the hamstringstendon. In the immediate postoperative period, he presented a hematoma in the area of extraction plasty. Initiallyit was attributed to muscle bleeding and physical therapy (rest, ice and bandage) was prescribed. It reappearedfew days later so it was decided to discontinue treatment with LMWH. Despite initial improvement, the haematomareappeared so an angioCT Scan was performed showing medial inferior genicular artery pseudoaneurysm.The patient underwent a surgery for surgical wound exploration and ligation of the affected vessel. The patientimproved and started the rehabilitation program as usual. Given the rarity of this disease and its pathogenesisliterature is reviewed.

We report the case of a 24 year old male with a chronic rupture of the anterior cruciate ligament inhis left knee. We performed an anterior cruciate ligament reconstruction with four fascicles using the hamstringstendon. In the immediate postoperative period, he presented a hematoma in the area of extraction plasty. Initiallyit was attributed to muscle bleeding and physical therapy (rest, ice and bandage) was prescribed. It reappearedfew days later so it was decided to discontinue treatment with LMWH. Despite initial improvement, the haematomareappeared so an angioCT Scan was performed showing medial inferior genicular artery pseudoaneurysm.The patient underwent a surgery for surgical wound exploration and ligation of the affected vessel. The patientimproved and started the rehabilitation program as usual. Given the rarity of this disease and its pathogenesisliterature is reviewed.