ArticleThe POSNA Pediatric Musculoskeletal Functional Health Questionnaire: Report on Reliability, Validity, and Sensitivity to ChangeDaltroy, Lawren H. Dr.P.H.*†‡§; Liang, Matthew H. M.D., M.P.H.*†‡∥; Fossel, Anne H.*; Goldberg, Michael J. M.D.¶The Pediatric Outcomes Instrument Development GroupAuthor Information Study conducted at New England Medical Center, Boston, Massachusetts, U.S.A. Address correspondence and reprint requests to Dr. M. J. Goldberg, Department of Orthopaedics, New England Medical Center, 750 Washington Street, Boston, MA 02111, U.S.A. From the *RBB Multipurpose Arthritis and Musculoskeletal Diseases Center, and †Department of Rheumatology/Immunology, Brigham and Women's Hospital; ‡Department of Medicine, Harvard Medical School; Departments of §Health and Social Behavior and ∥Health Policy and Management; and ¶Department of Orthopaedics, Tufts-New England Medical Center, Boston, Massachusetts, U.S.A. No benefits in any form have been received or will be received from a commercial party related directly or indirectly to the subject of this article. Journal of Pediatric Orthopaedics: September-October 1998 - Volume 18 - Issue 5 - p 561-571 Buy Abstract The goal of orthopaedic interventions is to improve the functional health of patients, particularly physical function. The American Academy of Orthopaedic Surgeons and the Pediatric Orthopaedic Society of North America (POSNA) commissioned a work group to construct functional health outcomes scales for children and adolescents, focusing on musculoskeletal health. The work group developed scales assessing upper extremity function, transfers and mobility, physical function and sports, comfort (pain free), happiness and satisfaction, and expectations for treatment. Parent and adolescent self-report forms were developed and tested on 470 subjects aged 2-18 years. The POSNA scales demonstrated good reliability, construct validity, sensitivity to change over a 9-month period, and ability to outperform a standard instrument, the Child Health Questionnaire physical functioning scale. They were useful for a wide variety of ages and diagnoses. They appear to be ideally suited for orthopaedic surgeons to assess the functional health and efficacy of treatment of their patients at baseline and follow-up. © 1998 Lippincott Williams & Wilkins, Inc.