Manual of Rheumatology and Outpatient Orthopedic Disorders
FIG. 56-19. Knees to chest. Lying on your back, slowly bring both knees up to your chest.
Books@Ovid
Copyright 2000 by Lippincott Williams & Wilkins
Stephen A. Paget, M.D., Allan Gibofsky, M.D., J.D. and John F. Beary, III, M.D.
Manual of Rheumatology and Outpatient Orthopedic Disorders