lecture 11: conditions of the shoulder/upper arm Flashcards
what muscles stabilize the head of the humerus in the socket
teres minor
supraspinatus
infraspinatus
subscapulatris
what is the sternoclavicular joint
the attachment of the axial skeelteon to the appendicular skeletonn
what two bones are attached by the SC joint
clavicle and sternum
wht is the functions of the SC ligaments
stops anterior and posterior translation of the clavicles
what are the dynamic stabilizers of the SC joint
pectoralis major
SCM
what is the MOI of the SC joint
FOOSH
Direct trauma
Contact to lateral shoulder
what does FOOSh stand for
falling on an outstretched hand
what are some examples of direct trauma that cause injury to the SC joint
knee, head, equipment directly on chest near SC ligaments
what some examples of cotnact to lateral shoulder taht could cause injury to SC joint
body checked into the boards
rudgy player lands on shoulder
what forces cause injuries related to FOOSh
compresssion forces
what are the 2 major injuries associated with the SC joint
sprain
dislocation
whatt is more common an anterior or posterior discolation of the clavicle from the sternum
anterior
why is there more complications associated with posterior dislocation of the clavicle from the sternum
more structures are locatted posteriorly (ex:, lungs, trachea)
what will be a tell tale sign of SC joint injury
the clavicle will stick out anteriorly near the sternum
what are the common SS assocaited to SC joint sprain
Pain with movement of the GH joint Pain with breathing (especially deep breaths) Pain with upright posture Pain with sleeping on side Clicking sensation at SC joint Bruising or swelling maybe present
why is there pain assocaited with breathing for SC sprain injuryes
beacuse the lungs push o nthe clavicle and thoracic cage on inspiration
pain with upright posture is for anterior or posterior dislocations of the SC joint
anterior dislocationns
what is more commonn, AC or SC joint injury
AC is more common
the AC joint is located where
onn the lateral aspect of the shoulder
the ac joint involved what two structures/bones
clavicle and acromion process of the scapula
AC ligaments stop what motion
stops anterior and posterior translation of the clav
CC ligaments stop what movement of the clav
stops clav from moving upwards
which is more superior the acromioclavicular or coracoclavicular
AC
what muscles need to be strengthened to help prevent AC joint innuries
deltoid and pectoralis major
what muscles need to be stretched in order to proveent AC joint injuries
upper fiber traps
what is the most common injuries assocated with AC joint
sprain of AC lig or CC lig
what are the MOI for AC joint injuries
FOOSH
direct blow to the lateral shoulder
blow to the superior acromion
AC joint that cause dislcoation of the clav are caleld what
seperated shoulder
how many grades of AC joint sprain are there
6 types
what are the structures involved with a grade 1 AC joint sprain
Slight to partial damage of the AC ligament and capsule
no damage to CC
what are the signs and symptoms associated to type 1 ac joint sprain
Point tenderness, no laxity or deformity
what are the structures involved with a type 2 AC joint sprain
Rupture of the AC ligament and partial damage to the CC ligament
(slight step deformity)
what are the signs and symptoms associated with type 2 ac joint sprain
Slight laxity and deformity of AC joint, slight step deformity
what are the structures innvolved with type 3 AC joint sprain
Complete tearing of AC ligament and CC ligaments, possible involvement of deltoid and traps fascia
(OBVIOUS step deformity)
what are the signs and symtpoms associated with grade 3 AC joint sprain
Obvious dislocation of the distal end of clavicle from acromion process
what are the structures involved with a grade 4 AC joint sprain
Complete tearing of AC and CC ligaments and tearing of the deltoid and trapezius fascia
what are the structures involved with a type 5 AC joint sprain
Complete tearing of AC and CC ligaments and tearing of the deltoid and trapezius fascia
what are tthe strcutres invovled in a type 6 AC joint sprain
Complete tearing of AC and CC ligaments and tearing of the deltoid and trapezius fascia
whatt are the SS associated with grade 4 AC joint sprain
Posterior clavicular displacement into the insertion of the UFT
what are the SS associated with grade 5 AC joint sprain
displacement of clavicle 3x height compared to other side
what are the SS associated with a grade 6 AC joint sprain
Displacement of clavicle inferiorly under coracoid
clavicle disapears
can you differentiate between all 6 og the AC joint sprains
no , only differentiate between grade 1-3
step deformity is very common in what injury
AC joint injuries
what are the common SS of AC joint sprain
Pain with movement of the GH joint
(Especially limited ROM in Flexion, abduction, cross flexion)
Step deformity
Some bruising may be present
Pin point pain on AC joint
what is the commonly fractured bone of the upper sholder
clavicle
where do fractures mostly occur in the clavicle
mostly at the 2 of the s shape
what is the MOI of clavicular fractures
direct impact, impact to lateral shoulder, FOOSH
what is the difference between AC joint sprain and clav fracture
positive tap test
sound of crepitus
what is the athelette has a clav fracture but has equipmennt on
equipment stays onn and you can use arm movement or palpationn to assess
80% of clavicular fractures happen at the lateral or medial side or middle
middle
which side of the clavicle is the least commonly fractured
medial (only 5%)
true or false: clav fracture and AC joint sprain look similar
true
what is the function of the should labrum
deepens cavity
decreases friction
what makes up the glenohumeral joint
the head of the humerus and the glenoid cavity of the scapula
true or false: GH joint is a dynamic joinnt
yes
explain how GH joint is a dynamic joint
WOrks with scapula and clavicle to ensure full ROM
what are the GH ligaments
superior
inferio
posterior
middle/anterior
whta are the muscles associated near the GH joint
biceps (long head), rotator cuff muscles, pectoralis major, deltoid, triceps
glenohumeral instability is in whatt directions
anterior postrior inferior or multiple directions
what is instability of GH joint graded on
Joint play- movement of head of humerus in glenoid fossa
what contributes to passive stability of GH
capsular ligaments and GH ligaments
what contrtibutes to dynamic stability of the GH
rotator cuff muscles, and other GH muscles
what is a tetst to diadnose GH instability
apprensionn test
what are the 2 tyoes of GH instability
TUBS
AMBRI
what is TUBS
traumatic unidirection instability
is TUBS usually treated with surgery or conservation
surgery
TUBS is usually associated with what other injury
bankart lesion
what is AMBRI
atraumatic multidirectional frequently bilateral