Looking to lead a stronger, healthier life?
Sign up for our Wellness Wire newsletter for all sorts of nutrition, fitness, and wellness wisdom.

Now we’re in this together.
Thanks for subscribing and having us along on your health and wellness journey.

See all Healthline's newsletters »

Ulnar collateral ligament

Ulnar collateral ligaments are found in the thumb, wrist, and elbow regions. In the thumb, the ulnar collateral ligament runs beside the metacarpophalangeal joint. If injured, the thumb may be immobilized for treatment. This ligament is not the same as the ulnar collateral ligament of the wrist. The ulnar collateral ligament of the wrist joint is a rounded cord. It attaches to the end of the ulna's styloid process. This ligament is not to be confused with the ulnar collateral ligament of the elbow, which is a thick, triangular band. This band has two sections: anterior and posterior. The anterior is attached to the front part of the medial epicondyle of the humerus. The posterior section is attached to the lower and back section of the medial epicondyle. An injury of the ulnar collateral ligament of the elbow can be either due to a slow deterioration or an acute rupture. Stress on the ulna will cause slow deterioration, while collisions may cause an acute rupture.

Written and medically reviewed by the Healthline Editorial Team
Co-developed by:

In Depth: Ulnar collateral ligament

Debugging Tools

Level: 2
Frame: 10
Toggle Hotspot
VP Data Tool
HexTable json from Steve
Steve's ajax layer update call:
[still on original layer]

Ad values:

adModel.dfpAdSite: hn.us.hl.bm.x.x.x
adParams['k1']: othermusculoskeletaldisorders,ulnar_collateral_ligament_of_elbow,8815933

More on BodyMaps

Take a Video Tour

Learn how to rotate, look inside and explore the human body. Take the tour

BodyMaps Feedback

How do you like BodyMaps? How can we improve it?