Doctor Mathias Bostrom and HSS changed my life. I was born with PFFD a rare birth defect where I was missing my femur bone. I went to see Doctor Bostrom due to horrible hip pain. I had searched high and low for a specialist in CT but to no avail. After months of research and doctors visits I found myself reading the profiles of orthopedic surgeons at Hospital for Special Surgery. After reading Dr Bostrom's profile I knew he was the surgeon I had been looking for. He and his team built me and one of a kind hip replacement and seven months later, in September of 2010, I was in surgery. That will be 7 years ago this September. I saw him today and am so incredibly pleased that the procedure has been a huge success. Doctor Bostrom is a life changing surgeon. I am so grateful for his knowledge and expertise.