joints/ligs Flashcards
ROM at the lat end of the clavical at the AC joint is permmited by the movement of this joint
SC
SC joint movement
Elevation (accompained by post rot of clavicle)
Depression
Forward and backward
4 ligs at the SC joint
Ant and Post SC ligs
Interclavicular lig (bw 2 claviclals)
Costoclavicular (inf to 1st rib)
Movement of Ac joint
Acromion of scap rotates on the acromial end of clavicle
what two intraarticular ligs at AC joint
Sup + Inf acromioclavicular ligs
what are the 3 extra articular ligs at AC jojnt
Coracoacromial- from coracoid to summit of acromion
Trapezoid- from sup surface of coracoid to trapezoid line
Coroid- from base of caornoid to conoid tubercle of clavicle
common dislocation of AJ joint from fall on shoulder- what ligg
costoclavicular ligiment is torn
how can the ac joint dislocate w/o lig rupture
fall is more on elbow
-can be risk of overlap
what direction does the glenoid fossa face
anterolaterally and superiorly
what is the coracoacromial arch and what does it prevent
Acromion, coracoacromial lig, coracoid
-Prevents superior dislocation
where is the triceps and biceps origin in relation to the GH joint capsul
triceps- outside
tendon of long- inside
what isolates teh biceps tendon through the fibrous capsul
synovial membrane on both sides
where is the subscapularis bursae found
-bw scapular neck and subscapularis tendon
what encompases the tendon of long head of biceps and what does it travel under
Tubular synovial sheath encompases tendon and travels under transverse humeral lig
what is the content of the subacromial and subdeltiod bursae
supraspinatus tendon
3 main ligs of the GH fibrous capsul
Superior Glenohumeral lig
Middle Glenohumeral
inf glenohumeral
first 60 degrees of abduction is done by what
after what is it done by
first 60- lat rot of scapula
after- rot of humerus at the shoulder jt
what is dislocation of the GH jt caused by (and what is torn)
excessive extension and lat rot
fibrous capsul and anterosup labrum are torn
labrum tears (what are they called)
sup
ant
post
sup- slap
ant- bankart
post-reverse bankart
post paralabral cysts affect what nerves
suprascap and or axillary
what is frozen shoulder caused by
fibrosis bw fibrous capsul, rotator cuff, delt and sub acromial bursea
are the medial and lateral epicondyles within the fibrous capsul
no, so fracture of them wouldnt affect articulation
3 bands of ulnar collateral lig and which is the strongest
ant (strong)- med epi to coronoid margin
Obliq- olecranon and coronoid
post- med epi to coranoid
2 ligs on lat elbow
- radial collateral- lat epi to supinator crest and anular lig
- annular lig- encurcles radius
what is students elbow an inflamation of
subcutaneous olecranon bursitis
what happens in pulled elbow and what is source of pain
force causes radial head to be displaced from annular lig
annular lig is source of pain
how does an avulsion to medial epicondly occur and what nerve likely gets injured
fall w severe abduction
injury to ulnar n
if the distal radioulnar synovial jt is inflamed how far can the inflamation travel
all the way to to distal forearm
what does the radius articulate with
scaphoid and lunate
when does the triquetrum articulate with the wrist
only during adduction
where does the palmar radiocarpal lig run from
styloid of radius, inf radius and ulna to 2 rows of carpals
how does an ant dislocation of lunate occur and what can it compres
fall on extended wrist, compress median nerve
what type of joint is metacarpopharengeal
synovial biaxial condyloid
what happens during a skiers thumb injury
rupture of ulnar collateral lig of metacarpopharengeal jt
hyperabduction of thum
colles fracture
distal part of radius overides radius
