3: AC and SC Joints Flashcards
(25 cards)
What type of joint is the sternoclavicular joint?
Saddle
What is the open packed position for the sternoclavicular joint?
Arm at side (physiologic rest position)
What is the closed packed position for the sternoclavicular joint?
Full shoulder elevation
What type of joint is the acromioclavicular joint?
Plane
With the AC joint, the lateral end of the clavicle is ____ and the acromion side is ____
Convex, concave
What is the open packed position for the acromioclavicular joint?
Arm at side (physiologic rest position)
What is the close packed position for the acromioclavicular joint?
90 degrees shoulder ABduction
What are the passive ROM patterns for the SC joint?
Elevation = 45
Depression = 15
Protraction = 15
Retraction = 15
Posterior rotation = 45
What is the major stabilizing ligaments of the ACJ?
Coracoclavicular ligaments
What two ligaments are involved in the acromioclavicular joint?
acromioclavicular and coracoclavicular ligaments
What is the most common cause of AC joint pain?
Osteoarthritis
How will a patient with AC joint pain typically present?
Pain on palpation of AC joint
Pain on cross body adduction
X ray showing degenerative change
What can Chiropractic do to treat AC joint pain?
Mobilization or manipulation
Stretching of pectoralis minor
What is the most common cause of AC joint sprain or separation?
Fall on the point of the shoulder
What are the grades of AC joint sprain/separations?
Type I = Sprain
Type II = Separation
Type III = Separation
A type I AC joint injury is a (Sprain/Separation)?
Sprain
A type II/III AC joint injury is a (Sprain/Separation)?
Separation
What characterizes a type II AC joint separation?
Ruptured AC ligament with INCOMPLETE injury to coracoclavicular ligament
What will be the radiographic characteristic of the coracoclavicular interspace in a type II AC joint separation?
Coracoclavicular interspace will be equal in both shoulders
What is the treatment for a type I AC joint sprain?
Ice and rest with strengthening exercises
What is the treatment for a type II AC joint sprain?
Ice and rest with strengthening exercises and possible bracing
What characterizes a type III AC joint separation?
Ruptured AC, CC, and joint capsule
What will a radiograph present as with a type III AC joint separation?
- Elevation of the distal clavicle is greater than the width of the clavicle
- Coracoclavicular interspace is greater in the injured shoulder
The coracoclavicular interspace is (Lesser/Greater) in the affected shoulder and indicates a minimal type ____ separation?
Greater, III
