Classification of articulation
Structures of the AC joint
Joint injuries
100
Synovial, or triaxial
What type of joint is the AC joint?
100
Acromion of the scapula and distal end of the clavicle.
What are the bones of the joint?
100
Grade 1,2,3
What is the common grade of injury?
200
Protraction, retraction, elevation, depression, and rotation.
What is the movement?
200
Acromioclavicular ligament conect the subacromial bursa and the clavicle.
What is the ligament connecting the joint?
200
Slight displacement of the joint. AC may be stretched or partially torn.
What is grade 1 injury?
300
Partial dislocation of joint. AC ligament is completely torn while coracoclavicular ligaments remain intact.
What is grade 2 injury?
400
complete separation of joint AC ligament, coracoclavicular ligaments and the capsule surrounding the joint are torn.
What is grade 3 injury?
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