Jts/Biomechanics!
What joint is the ONLY connection between the UE and axial skeleton?
What is the sternoclavicular joint?
What are the coracoclavicular ligs?
What are the trapezoid and conoid ligs?
What muscles make up the rotator cuff (4)?
What is supraspinatus, infraspinatus, teres minor, subscapularis?
What is the name of the bursa superior to the supraspinatus?
What is the subacromial bursa
This joint is a plane synovial joint that only allows gliding motion?
What is the acromioclavicular joint?
What motion does anterior sternoclavicular lig prevent?
What is stabilizes and prevents excessive superior displacement of the medial clavicle?
The trapezii, lats, rhomboids, pec major and minor, and serratus anterior are classified as ____ muscle group of the shoulder.
What are extrinsic muscles?
What joint contains an articular disc in the joint?
What is the sternoclavicular joint?
What is the concave/convex rule of the glenoid fossa on the humerus in the sagittal plane?
What is same roll and glides?
- with anterior roll = anterior glide
- with posterior roll = posterior glide
What is the purpose of the coracoacromial ligament?
What are the intrinsic muscles (6) of the shoulder?
What are the rotator cuff muscles (4), deltoid, and teres major?
What is scapulohumeral rhythm?
What is ...
- initial 0-30 degrees ONLY humerus
- >30 degrees follows 2:1 ratio (for every 2 degrees GH jt, you get 1 degree of scapulothoracic)
What scapular motion is associated with clavicular elevation?
What is downward rotation?
What does the coracohumeral ligament prevent?
What is prevents superior dislocation and inferior displacement?
What are the internal rotators (4) of the GH jt?
What are the lats, subscapularis, teres major, pec major
How much are the scapula and humerus rotated and in which directions?
What is...
- Scapula: 30 degrees anterior
- Humerus: 30 degrees posterior
For the SC joint, what bone is concave and convex when moving in the transverse and frontal planes?
What is...
- Frontal plane: convex (clavicle) on concave (sternum)
- Transverse plane: concave (clavicle) on convex (sternum)
When are the anterior and posterior bands of the inferior GH ligament taut?
What is ...
- anterior band: ER at 90 degrees of ABD
- posterior band: IR at 90 degrees of ABD
What are the actions of the deltoid?
What is...
- Anterior: ABD, IR, flexion,
- Middle: ABD
- Posterior: ABD, ER, extension
What nerve is typically associated with scapular winging?
What is the long thoracic nerve?