Quiz #6 Flashcards
what are common factors that lead to shoulder injury?
overuse, laxity, trauma, degenerative conditions, disuse, posture, and overhead use
what findings may overlap b/w various health conditions of the shoulder?
pain, paresthesia, limited ROM, weakness/atrophy, abnormal end feel
how do we differentiate shoulder pathologies?
special tests and MMT
what is the most mobile jt in the body and therefore the most prone to injury?
the GH jt (shoulder)
how much motion is provided by the GH jt in GH abduction?
120 deg abduction
how much motion is provided by the scapulothoracic jt in GH abduction?
60 deg upward rotation
how much motion is provided by the AC jt in GH abduction?
35 deg upward rotation
how much motion is provided by the SC jt in GH abduction?
25 deg elevation
25 deg upward rotation
how much GH jt external rotation is there with GH abduction?
45 deg external rotation
what are the motions at the SC joint?
elevation/depression
upward/downward rotation
protraction/retraction
what kind of jt is the SC jt?
synovial saddle jt
where is the synovial capsule of the SC jt the least robust?
inferiorly
SC ligaments reinforce and restrain what motions?
AP movements
the interclavicular lig of the SC jt restrains what motions?
superior and lateral motions
the costoclavicular ligs restrain what motion?
elevation
the costoclavicular ligs elevate and depress how many cm?
elevate: 4-6 cm
depress: 1-2 cm
when the SC jt elevates, what is the accessory glide?
downward glide
when the SC jt depresses, what is the accessory glide?
upward glide
what motion puts the costoclavicular ligs on slack?
depression
what motion makes the costoclavicular ligs taught?
elevation
what level of the spine is the inferior angle of the scapula?
T7
what level of the spine is the spine of the scapula?
T3
what level of the spine is the superior angle of the scapula?
T2
what planes does the scapular plane fall 45 deg between?
the frontal and sagittal planes