Hypothenar Hammer Syndrome Presenting as Critical Limb Ischemia in a 41-year-Old Caucasian Female; A Case Report

Traumatic injuries to the hand are commonly encountered in the adult population. Arterial occlusion from digital emboli due to thrombosis is a less frequently observed etiology. An example is hypothenar hammer syndrome, which usually arises following a mechanical injury. We report a case of hypothenar hammer syndrome in a 41-year-old Caucasian female following a blunt injury from exercise. She presented to our facility with complaints of intermittent severe pain in her left hand with discoloration of her fourth and fifth digits. Her symptoms began following an intense upper body strength exercise session and recurred intermittently over the following four to six weeks. MRI of the left hand showed no bony fractures or soft tissue injury. She was commenced on aspirin and Xarelto and subsequently had an arteriogram revealing thrombosis in the distal left ulnar artery. She ultimately had surgical resection of the thrombosed artery with repair using a venous graft which led to the resolution of her symptoms. Xarelto was discontinued after surgery, but she remains on Aspirin.