Musculoskeletal measurement tools from the International Prophylaxis Study Group (IPSG)

B. M. FELDMAN,* S. FUNK, B. LUNDIN, A. S. DORIA,§ R. LJUNG– and V. BLANCHETTE** *Division of Rheumatology, The Hospital for Sick Children, and the Departments of Pediatrics, Health Policy Management & Evaluation, and Public Health Sciences, University of Toronto, Toronto, ON, Canada; Department of Pediatrics, Mountain States Regional Hemophilia and Thrombosis Center, University of Colorado Health Sciences Center, Denver, CO, USA; Department of Radiology, University Hospital of Lund, Sweden; §Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, ON, Canada; –Departments of Paediatrics and Coagulation Disorders, University Hospital of Malmö, Sweden and **Division of Haematology/Oncology, The Hospital for Sick Children, and the Departments of Pediatrics, University of Toronto, Toronto, ON, Canada