Joints
connections of acromion & distal end of clavicle
what is ac joint
head, spine and rib cage
what is the axial skeleton
Biggest shoulder girdle issue
what is the trapezius
function of levator scapula
elevation & downward rotation of scapula; trap door to everything underneath
These are the four movements of the shoulder girdle
what is elevation, depression, abduction and adduction
horizontal adduction pulls you in
flexion brings it up
internal rotation brings it in
Six injures of the shoulder
Ac sprain
fracture of the cravicle
dislocation of the shoulder
rotator cuff tears
shoulder impingement
dislocation of shoulder
what is head of humerus out of socket and my be forward, posterior or downward
IT in SiTS
Where separated should occurs
What is AC joint
only bony connection between the humerus and axial skeleton
what is the sc joint
where the trapezius muscle go that causes elevation
up through neck,
three things pectoralis minor muscle does
downward rotation, anterior tilt, depression
helps scapula
lifting effect on ribs which is good for posture
elevation and abduction
what is bring up and arms together in front
shoulder cap
what is the deltoid
accompanies a separated shoulder; ligaments stretch
AC sprain
Caused by overuse and most often injured
Rotator cuff tears
Last s in SITD
supraspinaus
connects sternum & clavicle and not as common to separate
what is a SC joint
ball and socket joint
what is the shoulder
what movement happens when the trapezius muscle goes through the cervical spine
elevation, adduction, upward rotation
three things serratus anterior muscle does
abduct scapula
active in reaching and pushing
upward rotation of scapula
what is bring down and elbows together behind back
powerful abductor of humerus
deltoid
takes only 8 pounds to break
clavicle
stops throwing motion
biceps branchi
subscapularis movement
internal rotation and stability of shoulder joint
responsible for movements of scapula
what is the sc joint
the ball and socket
what is the humerus and fossa
What causes adduction of the trapezius muscle
comes through spine (thoracic to shoulder); entire superior border of scapula
three things subclavius muscle does
protect sc joint
stabilize sc joint
depress scapula
these are the anterior muscles of the shoulder girdle
what are pectoralis, minor. serratus anterior, subclavius
what does the deltoid muscle do
middle abduction
anterior - all forward movements and internal rotation of humerus
posterior - extension and external rotation
very painful injury
what is shoulder impingement
where and what does triceps brachi do
on posterior side and long head assists in adduction and extension
external rotation and stability of shoulder
articulation of spherical head of humerus with small shallow somewhat pear shaped glenoid fossa of scaoula
what is glenohumeral
bones included in glenohumeral
what is scapula and humerus
with the trapezius muscle what movement occurs from the rest of the thoracic to middle side of scapule
depression, upward rotation and adduction
function of major & minor rhomboids
downward rotation, retraction & elevation of scapula; works with trapezius for maintenance of good posture
what are leavtor, scalpulae, rhomboids, trapezius
what is rotator cuff tears
causes of fracture of the clavicle
what is downward blow to outer end of the shoulder and fall on outstretched hand
h muscles; really little; rotator cuff
what is sits
supraspinaus
abduction of arm and large stabilizer of shoulder
functions of glenoid fossil
ball and socket joint
allows movement of shoulder
dislocations of the shoulder
Movements of shoulder joint
flexion/extension
abduction horizontal
adduction diagonal
internal and external rotation
circumlocution (spinning in circles)
benching people try to grow this
pectoralis muscle
types of shoulder dislocations at glen fossa
comes out anterior in front - most common
posteriorly comes out back not as common
inferior/distal comes off side or straight down
causes flexion of elbow, horizontal abduction at shoulder, something for the forearm, 2 heads of biceps
what is biceps branchi
3 heads and opposite of biceps
triceps branchi
Caused by humeral head pressed against acronium process and closes everything off
what is shoulder impingement
S in SITS
subscapularis
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