O&A Pectoral Girdle Flashcards
What type of joint is the sternocalvicular joint?
Synovial saddle (functions as ball and socket)
What are the articulating surfaces of the sternocalvicular joint?
Sternal end of clavicle articulates with manubrium and 1st costal cartilage
What are the surfaces of the sternocalvicular joint covered in?
Fibrocartliage
What ligaments are associated with the sternocalvicular joint?
Anterior and posterior sternoclavicular ligaments
Interclavicular ligament
Costoclavicular ligament
What is the movement of the sternocalvicular joint?
Flexion, extension, and rotation
What is the nuchal ligament for?
Anchor for muscle attachment
What movement does the costoclavicular ligament restrict?
Elevation
What movement does the acromioclavicular ligament resist?
Separation
What movement does the posterior sternoclavicular ligament resist?
Protraction
What movement does the interclavicular ligament resist?
Depression
What movement does the coracoclavicular ligament resist?
Elevation
What movement does the anterior sternoclavicular ligament resist?
Retraction
What are the clavicular movements?
Elevation
Retraction
Posterior rotation
What are the scapular movements?
Upward rotation
Posterior tilt
Internal rotation
How much shoulder abduction is there in the scapular plane?
180°
120° of scapulathoracic
60° of glenohumoral (bottom 60)