Exam 3 Flashcards
In the shoulder, you have ______ over ______.
mobility over stability
The shoulder lacks _______ bony structure like a large socket and has ________ contact with the ______ skeleton.
intrinsic
minimal
axial
What does the shoulder rely on for stability?
ligaments and muscles
What do most shoulder injuries result from?
lack of stability
What is the bony anatomy of the shoulder?
- humerus
- scapula (glenoid, acromion, coracoid, scapular body)
- clavicle
- sternum
What are the joints of the shoulder?
- glenohumeral
- acromioclavicular
- sternoclavicular
- scapulothoracic articulation
What are the SITS muscles?
- suprascapularis
- infraspinatus
- teres minor
- subscapularis
What are the movements of the SITS muscles?
- suprascapularis = abduction/external rot
- infraspinatus = external rot
- teres minor = external rot
- subscapularis = internal rot
True or False:
Rotator cuff muscles help to center the head of the humerus on the glenoid fossa (arthrokinematics).
True
True or False:
In arthrokinematics, for shoulder flexion, the head of the humerus glides posteriorly up to 90 degrees then glides inferiorly after 90 degrees.
True
True or False:
In arthrokinematics, for abduction, the head of the humerus glides inferiorly
True
True or False:
In arthrokinematics, for external rotation, the head of the humerus glides anteriorly as it rolls posteriorly.
True
True or False:
In arthrokinematics, for internal rotation, the head of the humerus glides posteriorly as it rolls anteirorly
True
True or False:
In arthrokinematics, for extension, the head of the humerus glides anteriorly and medially
True
For scapulohumoral rhythm, what two joints must function together?
GH and scapulothoracic articulation
What is the ratio between GH elevation and scapular rotation?
2:1
To accomplish 180 degrees of GH elevation….
120 degrees from GH mvmt and 60 degrees from scapular rotation
Where is the subacromial bursa located?
above the supraspinatus tendon
What does the subacromial bursa do?
buffers tendons contact with acromion process
What can an inflamed subacromial bursa lead to?
RTC impingement
What is the past medical history of shoulder injuries?
- AC or GH injury can alter biomechanics
- cervical spine pathologies (can radiate pain to upper extremity)
What is the history of present condition for shoulder injuries?
- location of pain
- MOI
- onset
- symptoms
What does inspection of the anterior shoulder consist of?
- level of shoulders
- position of the head
- position of the arm
- contour of the clavicles
- symmetry of the deltoid group
What does inspection of the posterior shoulder consist of?
- alignmet of the vertebral column
- position of the scapular (winged)
- muscle development
- position of the humerus
What can you palpate in the anterior shoulder? (10)
- sternoclavicular joint
- clavicular shaft
- acromion process
- AC joint
- coracoid process
- humeral head
- greater tuberosity
- lesser tuberosity
- humeral shaft
- shoulder musculature
What can you palpate in the posterior shoulder? (5)
- spine of scapula
- superior angle
- inferior angle
- medial border
- posterior muscles
For joint and muscle assessment, what are the motion for AROM in the shoulder?
- flex/ext
- ab/add
- int/ext rot
- horizontal ab/add
For pathologies of the shoulder and related special tests, what other instabilities do you look at for GH instability?
- anterior instability
- posterior instability
- inferior instability
- multidirectional instability
For pathologies of the shoulder and related special tests, what do you look at for rotator cuff pathology?
- impingement syndrome
- rotator cuff tendinopathy
- subacromial bursitis
What does a SLAP lesion stand for?
supeiror labrum anterior to posterior lesion
For pathologies of the shoulder and related special tests, what should you know about biceps tendon pathology?
- bicipital tendinopathy
- causes: RTC dysfunction & impingement
- SLAP lesions
What is a SLAP lesion?
tears of the superior aspect of the glenoid labrum that extend anteriorly and posteriorly to the biceps insertion