Degenerative Disc Disease in Young Adults With Psoriatic Arthritis

F. Kharouf, MD, Gladman-Krembil Psoriatic Arthritis Research Program, Centre for Prognosis Studies in the Rheumatic Diseases, Schroeder Arthritis Institute, Krembil Research Institute, University Health Network, Toronto, and Division of Rheumatology, Department of Medicine, University of Toronto, Toronto.

S. Gao, MSc, Gladman-Krembil Psoriatic Arthritis Research Program, Centre for Prognosis Studies in the Rheumatic Diseases, Schroeder Arthritis Institute, Krembil Research Institute, University Health Network, Toronto.

D. Pereira, BSc, Gladman-Krembil Psoriatic Arthritis Research Program, Centre for Prognosis Studies in the Rheumatic Diseases, Schroeder Arthritis Institute, Krembil Research Institute, University Health Network, Toronto.

R.J. Cook, MMath, PhD, Department of Statistics and Actuarial Science, University of Waterloo, Waterloo.

V. Chandran, MBBS, MD, DM, PhD, Gladman-Krembil Psoriatic Arthritis Research Program, Centre for Prognosis Studies in the Rheumatic Diseases, Schroeder Arthritis Institute, Krembil Research Institute, University Health Network, Toronto, and Division of Rheumatology, Department of Medicine, University of Toronto, and Institute of Medical Science, University of Toronto, and Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario.

D.D. Gladman, MD, Gladman-Krembil Psoriatic Arthritis Research Program, Centre for Prognosis Studies in the Rheumatic Diseases, Schroeder Arthritis Institute, Krembil Research Institute, University Health Network, Toronto, and Division of Rheumatology, Department of Medicine, University of Toronto, and Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada.