Shoulder Part 1: Exam 3 Flashcards
Movement and stablization of the shoulder requires integrated function of what?
- rotator cuff muscles
- joint capsule
- scapula stabilizing muscles
Bones of the shoulder complex
- clavicle
- scapula
- humerus
Joints of the shoulder complex
- sternoclavicular
- acromioclavicular
- glenohumeral
- scapulothoracic
Ligaments of the shoulder complex
- sternoclavicular
- acromioclavicular
- coracoclavicular
- glenohumeral
SC joint
Sternoclavicular
SC joint articulation
Clavical articulates with manubrium of the sternum
What is between the articulating surfaces?
Fibrocartilaginous disk
Fibrocartilaginous disk
- shock absorber and helps prevent displacement
- clavicle permitted to move up and down, forward and backwards and in rotation
AC joint
Acromioclavicular joint
AC join location
Lateral end of the clavicle
-acromion process of scapula meets lateral end of clavicle
AC joint injuries
Weak joint and susceptible to sprain and separation
GH joint
Glenohumeral
What type of joint is the GH joint?
Ball and socket joint
GH joint location
Round head of humerus articulates with shallow glenoid fossa of scapula
What helps to widen and deepen the articulation of humerus and scapula?
Glenoid labrum