Acromioclavicular ligament

Acromioclavicular ligament
The left shoulder including the acromioclavicular joint and the proper ligaments of the scapula.
Details
From	Acromion
To	Clavicle
Identifiers
Latin	Ligamentum acromioclaviculare
TA	A03.5.03.002
FMA	26026
*Anatomical terminology* [edit on Wikidata]

The acromioclavicular ligament is part of the acromioclavicular joint. It is divided into two parts: superior and inferior.

Superior acromioclavicular ligament

This ligament is a quadrilateral band, covering the superior part of the articulation, and extending between the upper part of the lateral end of the clavicle and the adjoining part of the upper surface of the acromion.

It is composed of parallel fibers, which interlace with the aponeuroses of the trapezius and deltoideus; below, it is in contact with the articular disk when this is present.

This ligament provides horizontal stability to the acromioclavicular joint

Inferior acromioclavicular ligament

This ligament is somewhat thinner than the preceding; it covers the under part of the articulation, and is attached to the adjoining surfaces of the two bones.

It is in relation, above, in rare cases with the articular disk; below, with the tendon of the supraspinatus.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

Anatomy figure: 10:02-01 at Human Anatomy Online, SUNY Downstate Medical Center

Joints and ligaments of the arm

Shoulder

Sternoclavicular	Anterior sternoclavicular Posterior sternoclavicular Interclavicular Costoclavicular

Acromioclavicular	Syndesmoses: Coracoacromial Superior transverse scapular Inferior transverse of scapula Synovial: Acromioclavicular Coracoclavicular (trapezoid conoid)

Glenohumeral	Capsule Coracohumeral Glenohumeral (superior, middle, and inferior) Transverse humeral Glenoid labrum

Elbow

Humeroradial	Radial collateral

Humeroulnar	Ulnar collateral

Proximal radioulnar	Anular Oblique cord Quadrate

Forearm

Distal radioulnar	Palmar radioulnar Dorsal radioulnar Interosseous membrane of forearm

Hand

Wrist/radiocarpal	Dorsal radiocarpal/Palmar radiocarpal Dorsal ulnocarpal/Palmar ulnocarpal Ulnar collateral/Radial collateral

Intercarpal Midcarpal	Radiate carpal Dorsal intercarpal Palmar intercarpal Interosseous intercarpal Scapholunate Pisiform joint (Pisohamate Pisometacarpal)

Carpometacarpal	Dorsal carpometacarpal Palmar carpometacarpal thumb: Radial collateral Ulnar collateral

Intermetacarpal	Deep transverse metacarpal Superficial transverse metacarpal

Metacarpophalangeal	Collateral Palmar

Interphalangeal	Collateral Palmar

Other	Carpal tunnel Ulnar canal

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