One patient’s dream come trueAt age 75, Bill Bergstrom got the gift he wanted his entire life: straight legs.Bill was born with a rare genetic disorder — hereditary multiple osteochondromas — characterized by multiple benign bone tumors covered by cartilage that grow at the end of the long bones of the legs, arms and digits. The result can be discomfort or even severe pain and skeletal changes. There is no medical treatment.At age 10, “bone bumps,” as...