Trapezoid ligament: Difference between revisions

Revision as of 16:18, 9 February 2025

Trapezoid Ligament

The trapezoid ligament is one of the two components of the coracoclavicular ligament, the other being the conoid ligament. These ligaments are part of the shoulder complex and play a crucial role in stabilizing the acromioclavicular joint.

Anatomy

The trapezoid ligament is a strong, flat, quadrilateral band that is located on the lateral side of the coracoclavicular ligament. It extends from the superior surface of the coracoid process of the scapula to the inferior surface of the clavicle.

Attachments

The trapezoid ligament attaches to the trapezoid line on the inferior surface of the clavicle. It is positioned anteriorly to the conoid ligament, which attaches to the conoid tubercle of the clavicle.

Function

The primary function of the trapezoid ligament is to prevent excessive movement between the clavicle and the scapula, particularly limiting the upward displacement of the clavicle. It works in conjunction with the conoid ligament to maintain the integrity of the acromioclavicular joint.

Clinical Significance

Injuries to the trapezoid ligament can occur as part of acromioclavicular joint dislocations, commonly known as shoulder separations. These injuries are often the result of trauma, such as a fall directly onto the shoulder. The severity of the injury can vary, with more severe cases involving complete tears of the coracoclavicular ligaments.

Images

Diagram of the shoulder joint, showing the trapezoid ligament.

The coracoclavicular ligament, with the trapezoid ligament labeled.

Related Pages

References

Moore, K. L., Dalley, A. F., & Agur, A. M. R. (2013). Clinically Oriented Anatomy. 7th edition. Lippincott Williams & Wilkins.
Standring, S. (2015). Gray's Anatomy: The Anatomical Basis of Clinical Practice. 41st edition. Elsevier.

@@ Line 1: / Line 1: @@
-'''Trapezoid Ligament'''
+== Trapezoid Ligament ==
-The '''Trapezoid Ligament''' is a key anatomical structure in the human body, specifically within the [[shoulder joint]]. It is one of the two ligaments that make up the [[coracoclavicular ligament]], the other being the [[conoid ligament]].
+The '''trapezoid ligament''' is one of the two components of the [[coracoclavicular ligament]], the other being the [[conoid ligament]]. These ligaments are part of the [[shoulder]] complex and play a crucial role in stabilizing the [[acromioclavicular joint]].
-==Etymology==
+== Anatomy ==
-The term "trapezoid" is derived from the Greek words "trapecoeides", meaning "table-like", and "eidos", meaning "form" or "shape". This is likely due to the ligament's table-like shape.
-==Anatomy==
+The trapezoid ligament is a strong, flat, quadrilateral band that is located on the lateral side of the coracoclavicular ligament. It extends from the superior surface of the [[coracoid process]] of the [[scapula]] to the inferior surface of the [[clavicle]].
-The Trapezoid Ligament is located in the [[shoulder joint]], extending from the [[coracoid process]] of the [[scapula]] to the [[clavicle]]. It is broader and shorter than the [[conoid ligament]], and its fibers are oriented obliquely downwards and laterally.
-==Function==
+=== Attachments ===
-The primary function of the Trapezoid Ligament is to stabilize the [[shoulder joint]]. It helps to prevent the [[clavicle]] from moving upwards, which is crucial for maintaining the integrity of the shoulder joint during movement.
-==Clinical Significance==
+The trapezoid ligament attaches to the trapezoid line on the inferior surface of the clavicle. It is positioned anteriorly to the conoid ligament, which attaches to the conoid tubercle of the clavicle.
-Injuries to the Trapezoid Ligament can occur due to trauma or overuse, and can result in pain, instability, and decreased range of motion in the shoulder joint. Treatment typically involves rest, physical therapy, and in severe cases, surgery.
-==Related Terms==
+=== Function ===
+The primary function of the trapezoid ligament is to prevent excessive movement between the clavicle and the scapula, particularly limiting the upward displacement of the clavicle. It works in conjunction with the conoid ligament to maintain the integrity of the acromioclavicular joint.
+== Clinical Significance ==
+Injuries to the trapezoid ligament can occur as part of [[acromioclavicular joint dislocation]]s, commonly known as shoulder separations. These injuries are often the result of trauma, such as a fall directly onto the shoulder. The severity of the injury can vary, with more severe cases involving complete tears of the coracoclavicular ligaments.
+== Images ==
+[[File:Gray326.png|thumb|right|Diagram of the shoulder joint, showing the trapezoid ligament.]]
+[[File:Gray328.png|thumb|right|The coracoclavicular ligament, with the trapezoid ligament labeled.]]
+== Related Pages ==
+* [[Acromioclavicular joint]]
 * [[Coracoclavicular ligament]]
 * [[Conoid ligament]]
-* [[Shoulder joint]]
+* [[Shoulder anatomy]]
-* [[Coracoid process]]
-* [[Scapula]]
+== References ==
-* [[Clavicle]]
-[[Category:Anatomy]]
+* Moore, K. L., Dalley, A. F., & Agur, A. M. R. (2013). ''Clinically Oriented Anatomy''. 7th edition. Lippincott Williams & Wilkins.
-[[Category:Orthopedics]]
+* Standring, S. (2015). ''Gray's Anatomy: The Anatomical Basis of Clinical Practice''. 41st edition. Elsevier.
-[[Category:Medical]]
-{{stub}}
+[[Category:Ligaments of the upper limb]]