Ulnar collateral ligament of elbow joint

Structure

It consists of two portions, an anterior and posterior united by a thinner intermediate portion. Note that this ligament is also referred to as the medial collateral ligament{{Cite web | access-date = 5 February 2012 | access-date = 5 February 2012

The anterior portion, directed obliquely forward, is attached, above, by its apex, to the front part of the medial epicondyle of the humerus; and, below, by its broad base to the medial margin of the coronoid process of the ulna.

The posterior portion, also of triangular form, is attached, above, by its apex, to the lower and back part of the medial epicondyle; below, to the medial margin of the olecranon.

Between these two bands a few intermediate fibers descend from the medial epicondyle to blend with a transverse band which bridges across the notch between the olecranon and the coronoid process.

This ligament is in relation with the triceps brachii and flexor carpi ulnaris and the ulnar nerve, and gives origin to part of the flexor digitorum superficialis.

Injury

Main article: Ulnar collateral ligament injury of the elbow

During activities such as overhand baseball pitching, this ligament is subjected to extreme tension, which places the overhand-throwing athlete at risk for injury. Acute or chronic disruption and/or attenuation of the ulnar collateral ligament often result in medial elbow pain, valgus instability, and impaired throwing performance. There are both non-surgical and surgical treatment options.

Additional images

File:Elbow joint - deep dissection (anterior view, human cadaver).jpg|Elbow joint. Deep dissection. Anterior view. File:Slide2xzxzxz.JPG|Elbow joint. Deep dissection. Anterior view. File:Anatomy of the ulnar collateral ligament in the pitcher's elbow.png|Anatomy of the ulnar collateral ligament in the pitcher's elbow

References

References

1. (1918). "Anatomy of the human body". Lea & Febiger.
2. (2017-11-02). "Review of Jobe et al (1986) on reconstruction of the ulnar collateral ligament in athletes". Journal of ISAKOS: Joint Disorders & Orthopaedic Sports Medicine.
3. (2015). "Biologic Augmentation of the Ulnar Collateral Ligament in the Elbow of a Professional Baseball Pitcher". Case Reports in Orthopedics.