Human Forearm Anatomy: Pronation vs Supination - Bone Structure Diagram #1438739 (License: Personal Use)

This vintage-style anatomical drawing illustrates the skeletal structure of the human forearm and hand, highlighting the relative positions of the humerus (H), radius (R), and ulna (U) during supination (B) and pronation (A). In supination, the radius lies parallel to the ulna with the palm facing upward; in pronation, the radius crosses over the ulna, rotating the palm downward. The diagram emphasizes joint articulation at the elbow and wrist, crucial for understanding rotational movement mechanics.

Used in medical education, orthopedic reference guides, and anatomy textbooks to teach forearm biomechanics; targets students, healthcare professionals, and researchers seeking visual clarification of pronation/supination.