Online College Courses for Credit

Gross Anatomy of the Forearm

Gross Anatomy of the Forearm

Author: Aaron Mullally

- know which two bones are in the forearm (radius, ulna)

- know which side of the forearm these bones are found

- know the landmarks of the radius

- know the landmarks of the ulna

This packet covers the bony anatomy of the forearm

See More
Fast, Free College Credit

Developing Effective Teams

Let's Ride
*No strings attached. This college course is 100% free and is worth 1 semester credit.

37 Sophia partners guarantee credit transfer.

299 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 32 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.



The forearm consists of two bones, the radius and ulna. It is important that you are able to locate these bones properly. Always refer back to your basic anatomic position and remeber that the palms are always facing out. This would make your thumbs facing laterally and pinkys facing medially. Your radius is the lateral bone of the forearm and is on the same side as your thumb while the ulna would be the medial bone closer to the pinky side.

The radius does not contribute to the elbow joint at all, that is pure ulna and humerus. The olecronon of on the proximal ulna articulates with the olecronon fossa of the humerus forming the humeroulnar joint.

The distal end of the radius is also about twice the size of the distal ulna. The head of the radius is proximal while the head of the ulna is distal.

Source: Mind of Aaron

Gross Anatomy of the Forearm

The last few minutes of this video covers the forearm

Source: Self made with Netter

Forearm Images

Images of the radius and ulna

Source: Self made