This photograph shows the arm bones at the point of articulation (the joint area) between the bone of the upper arm (humerus) and the two bones of the lower arm (radius and ulna. Update Date: 08/11/2008Linda Vorvick, MD, Seattle Site Coordinator, Maternal & Child Health Lecturer, Pathophysiology, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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