Forearms

Forearms

The forearm is the region of the upper extremity between the wrist and the elbow joint. It contains 20 muscles, supported by two long bones: the radius and the ulna. The forearm muscles are divided into two main compartments: the anterior (front) compartment, which generally contains flexor muscles that help bend the wrist and fingers, and the posterior (rear) compartment, which contains extensor muscles that help straighten the fingers and wrists.

The forearm muscles enable complex movements of the arm, elbow, wrist, and fingers, such as turning the palms up and down (pronation and supination), bending, straightening, and stretching the wrists and fingers, and moving the fingers and thumbs. They are crucial for daily tasks like carrying objects, opening jars, and contribute significantly to grip strength.