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)
What does the coracohumeral ligament resist?
inferior translation
What does the superior, middle, and inferior glenohumoral ligaments resist?
Anterior translation
What does the anterior inferior glenohumoral ligament resist?
Abduction and external rotation
What does the posterior inferior glenohumoral ligament resist?
Abduction and internal rotation
What are the joints of the elbow?
Humoral radial
Humoral ulna
What are the ligaments on the medial side of the elbow?
Anterior band
Posterior band
Oblique band
What do the anterior, posterior, and oblique bands of the elbow limit?
Abduction of forearm
What type of joint is the acromioclavicular joint?
Plane synovial
What are the articulating surfaces of the acromioclavicular joint?
Acromial end of clavicle articulates with the acromion of the scapulae (covered in fibrocartilage)
What ligaments are associated with the acromioclavicular joint?
Acromioclavicular ligament
Coracoclavicular ligament
Conoid ligament
Trapezoid ligament
What is the movement of the acromioclavicular joint?
Rotation on acromial end of clavicle
What is the movement of the scapulothoracic joint?
Elevation
Depression
Protraction
Retraction
Rotation
What is scapulohumeral rhythm?
1° of movement occurs for every 3° of arm movement
What type of joint is the glenohumoral joint?
Ball and socket synovial
What are the articulating surfaces of the glenohumoral joint?
Glenoid fossa of the scapula articulating with the head of the humerus
What ligaments are associated with the glenohumoral joint?
Glenohumoral ligaments
Coracohumoral ligaments
Transverse ligaments
Coracoacromial ligaments
What are the movements of the glenohumoral joint?
Flexion
Extension
Abduction
Adduction
Medial and lateral rotation
What is a bursae?
Contains synovial fluid and is located where tendons rub against bone
