CH.11 shoulder and upper arm Flashcards
learn by tmr
what are the four joints of the shoulder
acromioclaviuclar (AC), sternoclavicualr (SC), glenohumeral (GH), and coracoidclavicualr (CC)
what type of injury occours to a moveable joint
dislocation
what type of injury occours to a non moveable joint
seperation
what is the AC joints name, function, and connection point
AC joint: acromioclavicualr joint
function: trasmit forces from extremites to the clavicle
connection point: acriomion and lateral clavicle
what is the SC joints name, fucntion, and connection point
SC joint: sternoclaviuclar joint
connection point : articulation of the medial clavicle to the sternum
function: allowing small amount of movement for the clavicle on the antroposteroir plane (forward and backwards)
what is the GH joints name, function, and connection point?
GH joint: Glenohumeral joint
fucntion: connects the upper limb to trunk, provifing wide ROM. acts like the hip joint but w/ more mobility
connection point: humerus and scapula
what is the name of the CC joint, its function, and connection point
CC joint: coracoclavicualr joint
function: not specfied in notes
connection point: corcoid process of the scapula and the clavicle
what projects off of the sternum
xyphoid process
4 bones of the shoudler
humerus, sternum,clavicle, scapula
clavicle is AKA
collarbone
the shoulder trades __________ for ___________
strength/mobility
the only moveable shoulder joint is the
(GH)- glenohumeral joint
the three non-moveable shoulder joints are…..
sternoclavicular (SC), coracoclavicualr (CC), and the acromioclaviclar (AC) joint(s)
the scapula ______ on the back of the rib cage and is held in place by the ______ musscles
floats/shoulder
what is scapuarthorcic movement refering to
the movement of the “floating” scapula
what is the glenoid fossa
a depression articulating with the spherical head of the humerus and is called the GH joint,
what are the musscles that cross the GH joint
deltoid, pectoralis major, bicpes, triceps, latisimus dorsi, and rotator cuff musscle group
what are the muscles in the rotator cuff muscle group
supraspinatus, infraspinatus, teres minor, and subscapularis. the acronym SITS is used to remember these 4 muscles.
what is the function of the rotaor cuff?
assiting in the throwing and overhand movement process
what are the components of the shoulder girldle
a complex made up of the upper arm, clavicale, and scapula
what is the sesnory distrubtion of a nerve called
dermatome
define myotomes
the motor distrubtion of a group of muscles innervated by a single nerve root.
what does shoulder flexion look like
movement of the aarm upwards towards the front of the body
what does shoulder extension lok like
movement of the arm backwards, increasing the joint angle
what does shoulder abduction look like
movement of the arms away from the body
what does shoulder adduction look like
movement of the arm towards the midline of the body
define horizontal abduction
with forearms paralel to the ground, the movement of the arms away from the body
define horizontal adduction
with the forearms parralel to the ground, movement of the arms towards the midline of the body
define shoulder internal rotation
with upper arm at the side of the body or abducted 90 degrees, the thumb is rotated downaward
define shoulder external rotation
with the upper arm at the side of the body or abducted 90 degrees, the thumb is rotated upwards
define circumduction
the movement of the shoulder in a complete circle
define shoulder elavtion
tensing your shoulders up towards your ears
define shoulder depression
relaxing your shoulders to a normal posture
define protraction
movement of the shoulder baldes away from eachother
define retraction
movement of the shoulder blades towards eachother
what is the function of the biceps
flexion and supination
what is the function of the deltiod
middle fibers: abduction
anterior fibers: have flexion, horizontal abduction, and internal rotation.
posterior fibers have extension, horizontal adduction, and external rotation
so overall the deltoid muscle is responsible for almost every shoulder movement.
what is the postion and function of the infraspinatus
part of the rotator cuff musscle group, assits with external rotation and is located beneath the spine
what is the location and fucntion of the supraspinatus
part of the rotator cuff musscle group, assits in abduction, and is located just above the spine
what is the evaluation format of an injury
H- histroy (how, where, what hurts)
O- observation (look for swelling ,bleeding, deformites)
P- palpation (bilateral compasrion)
S- specail tests
what type of joint is your shoulder
ball and socket
true or false muscualr strains the shoulder girdle is common
true
what ligamnet is most commonly sprained in your shoulder
acriomion clavicluar AC
what shoulder joint is the “true” shoulder joint
GH or glenohumeral
what is a coraciod process
a bony preojection of the scapula
what is your acrimion process
a bony projection of your clavicle
what postion is the shoulder most commonly in for dislocations
abduction and external rotation
