Shoulder Joint Classifications Flashcards
Based on Lindsey's chart
What type of joint is the glenohumeral joint?
True synovial lined diarthrodial joint
Describe the arthokinematics at the glenohumeral joint.
Convex-on-Concave
Describe the capsular pattern of the glenohumeral joint.
ER (greatest limited) > Abduction > Internal rotation
What is the closed-packed position of the glenohumeral joint?
Abduction and full external rotation
What is the open-packed position of the glenohumeral joint?
55 degrees abduction and 30 degrees horizontal adduction
What type of joint is the Acromioclavicular joint?
Plane joint
Describe the capsular pattern of the acromioclavicular joint.
There is no true capsular pattern…
Pain at end-range and pain in extremes of ROM (especially horizontal adduction and full elevation)
What is the closed-packed position of the acromioclavicular joint?
90 degrees of abduction
What is the open-packed position of the acromioclavicular joint?
Arm by the side
What type of joint is the sternoclavicular joint?
Saddle joint
Describe the arthrokinematics of the sternoclavicular joint.
Concave-on-convex in the anterior/posterior (protraction/retraction) direction.
Convex-on-concave in the superior/inferior (elevation/depression) direction.
What is the capsular pattern for the sternoclavicular joint?
Pain at the extremes of ROM (especially full arm elevation and horizontal adduction
What is the closed-packed position of the sternoclavicular joint?
Maximum arm elevation and protraction
What is the open-packed position of the sternoclavicular joint?
Arm at the side
What type of joint is the scapulothoracic joint?
Functionally a joint…. but not a “true joint”
