shoulder exam Flashcards
(21 cards)
Origin and insertion of the subscapularis muscle?
subscapular fossa and the lesser tubercle of the humerus
actions of the subscapularis?
internally/medially rotates the humerus
innervation of the subscapularis?
upper and lower subscapular nerve- C5, C6
what tendons are attached to the greater tubercle of the humerus?
tendons of the terres minor and the infraspinatus
what are the actions of the teres minor and infraspinatus?
laterally rotate the humerus (shoulder joint)
What is the origin and insertion of the teres minor?
and the innervation?
Origin—-lateral border of the scapula
Insertion—–inferior facet of greater tubercle of the humerus
innervation- axillary nerve
what is the origin and insertion of the infraspinatus?
what is its innervation?
Origin—-infraspinous fossa of the scapula
Insertion —–middle facet of greater tubercle of the humerus
innervation—–suprascapular nerve
what is the origin and insertion of the deltoid?
Origin——the anterior border and upper surface of the lateral third of the clavicle, acromion, spine of the scapula
Insertion——deltoid tuberosity of humerus
what is the innervation of the deltoid?
axillary- C5, C6
what are the actions of the deltoid?
shoulder abduction, flexion and extension
name specific tests in the shoulder exam and describe them?
hawkins (tests the capsule?)
jobes (test for supraspinatus?
scarf (tests the AC joint)?
subscapularis test?
hawkins tests for impingement syndrome
jobes tests for rotator cuff injury (mostly the supraspinatus)
scarf test
what is frozen shoulder?
and what is the result of having it?
this is adhesive capsulitis.
In frozen shoulder, the shoulder capsule thickens and becomes tight. Stiff bands of tissue — called adhesions — develop. In many cases, there is less synovial fluid in the joint.
The hallmark sign of this condition is being unable to move your shoulder - either on your own or with the help of someone else. It develops in three stages:
loss/limitation of internal and external rotation
origin and insertion of the supraspinatus?
Origin——supraspinous fossa of scapula
Insertion—–superior facet of greater tubercle of humerus
describe the route of the supraspinatus muscle from origin to insertion and the clinical relevance of this?
The supraspinatus muscle arises from the supraspinous fossa, a shallow depression in the body of the scapula above its spine.
The supraspinatus muscle tendon passes laterally beneath the cover of the acromion.
What three rotator cuff muscles insert into the greater tubercle of the humerus?
SIT
supra
infra
teres minor
which teres (minor or major) is not considered part of rotator cuff?
Major
common causes of shoulder pain, starting with most common?
tendon inflammation- (either bursitis, tendinitis or tendon tears) (tendon tears- of the rotator cuff and biceps are the most common) (of the rotator cuff tears, supraspinatus is the most common)
instability
arthritis
fracture
what 3 tendons are attached to the greater tubercle of the humerus
SIT (greater facet, middle facet and inferior facet) - all located on the posterior aspect of humerus)
supraspinatus
infraspinatus
teres minor
what is attached to the lesser tubercle of the humerus?
and what does this muscle do to the shoulder?
subscapularis, C5-C6
internally rotates shoulder and stabilises shoulder
what is the insertion and origin of the supraspinatus
Origin—-supraspinous fossa of scapula
Insertion—–superior facet of greater tubercle of humerus
what is the action of the supraspinatus?
abduction of the arm for the first 10-15 degrees. the deltoid takes over after 30 degrees.
it also stabilises the shoulder joint.
