Coracoclavicular ligament

Structure

The coracoclavicular ligament connects the clavicle to the coracoid process of the scapula. It is not part of the acromioclavicular joint articulation, but is usually described with it, since it keeps the clavicle in contact with the acromion. It consists of two fasciculi, the trapezoid ligament in front, and the conoid ligament behind. These ligaments are in relation, in front, with the subclavius muscle and the deltoid muscle; behind, with the trapezius.

Variation

The insertions of the coracoclavicular ligament can occur in slightly different places in different people. It may contain three fascicles rather than two.

Function

The coracoclavicular ligament is a strong stabilizer of the acromioclavicular joint. It is also important in the transmission of weight of the upper limb to the axial skeleton. There is very little movement at the AC joint.

Clinical significance

The coracoclavicular ligament may be damaged during a severe dislocated clavicle. Damage may be repaired with surgery.

References

References

1. (December 2018). "The medial coracoclavicular ligament: anatomy, biomechanics, and clinical relevance—a research study". JSES Open Access.
2. (1 April 1997). "Surgical anatomy and functionof the acromioclavicular and coracoclavicular ligaments". Operative Techniques in Sports Medicine.
3. (1 November 2001). "Anatomic variance of the coracoclavicular ligaments". [[Journal of Shoulder and Elbow Surgery]].
4. (1 January 2000). "Structural Properties of the Intact and the Reconstructed Coracoclavicular Ligament Complex". [[The American Journal of Sports Medicine]].