Case 4-1991

Abstract
Presentation of CaseAn 18-year-old man was admitted to the hospital with pain in the right leg and a local mass after a subtotal resection of the mass performed elsewhere.The patient was known to have Morquio's syndrome. There was a history of an anterior subluxation of the second cervical vertebra upon the third cervical vertebra at the age of seven years, without neurologic sequelae; no evidence of instability was detected on repeated radiographic examinations. At the age of eight years bilateral proximal femoral osteotomies were performed. Two months later osteotomies were performed on both distal femurs in treatment of . . .