Flashcards in Chapter 7 Shoulder Deck (48):
Bones making up the shoulder?
Clavicle, scapula, humerus
Joints of the shoulder/
Scapulothoracic (pseudo-joint), AC joint, glenohumeral, SC joint
Rotator cuff muscles?
Supraspinatus, Infraspinatus, teres minor, Subscapularis (SItS)
Deltoid (anterior portion)
Deltoid (middle portion)
Lat dorsi, teres major, deltoid (posterior portion)
Pec major, lat dorsi
Primary external rotators?
Infraspinatus, teres minor
Primary internal rotator?
Subclavian artery passes bt which 2 muscles?
Anterior and middle scalenes--contracture of these muscles affects arterial supply but not venous drainage
Subclavian vein passes where?
Anterior to anterior scalene
When does subclavian a become axillary a?
Lateral border of 1st rib
When does the axillary a become the brachial a?
Inferior border of teres minor
1st major branch of brachial a?
Profunda brachial a--accompanies radial n in its posterior course of radial groove
Where does brachial a divide into ulnar and radial aa?
Under bicipital aponeurosis
What becomes the deep palmar arterial arch?
What becomes the superficial palmar arterial arch?
Ulnar a (Ulnar is Up in the palm)
Tx technique to relieve lymph congestion of UE?
1) Open thoracic inlet
2) Redome diaphragm
3) Posterior axillary fold technique
Nerve roots of brachial plexus?
Degrees of motion during arm abduction?
120 degrees due to glenohumeral motion, 60 degree due to scapulothoracic motion
For every 3 degrees of abduction...
Glenohumeral joint moves 2 degrees and the scapulothoracic joint moves 1 degree
Most common somatic dysfunction of shoulder?
Restriction in internal and external rotation
Second most common somatic dysfunction of shoulder?
Restriction in abduction
Least common somatic dysfunction of shoulder?
Restriction in extension
Motion of clavicle during internal/external rotation?
Around transverse axis
Most common somatic dysfunction of SC joint?
Clavicle anterior and superior on sternum
Most common somatic dysfunction of AC joint?
Clavicle superior and lateral on acromion
"Step-off" seen at the AC joint?
Superior and lateral clavicle on acromion
Sites of compression of nv bundle in thoracic outlet syndrome?
1) Bt anterior and middle scalenes
2) Bt clavicle and 1st rib
3) Bt pectoralis minor and upper ribs
Pathogenesis of supraspinatus tendinitis?
Continuous impingement of greater tuberosity against acromion as arm is flexed and internally rotated
Site of pain in supraspinatus tendinitis?
Tip of acromion
Pain exacerbated by abduction from 60-120 degrees in supraspinatus tendinitis
Pathogenesis of bicipital tenosynovitis?
Inflammation of tendon and its sheath of long head of biceps
Aggravating factors in bicipital tenosynovitis?
Elbow flexion or supination
Most commonly affected rotator cuff muscle?
Location of pain in rotator cuff tear?
Tenderness just below tip of acromion
Motions most often affected in adhesive capsulitis?
Abduction, internal and external rotation (extension is preserved)
Etiology of frozen shoulder?
Prolonged immobility of shoulder
When is pain elicited in frozen shoulder?
End of ROM
Most common shoulder dislocation?
Anterior and inferior--affects axillary n
Pathogenesis of winging of scapula?
Weakness of anterior serratus due to long thoracic n injury
Most common brachial plexus injury?
Upper trunk (C5-6)
What is paralyzed in Erb-Duchenne's?
Abduction, external rotation, flexion, supination
Most commonly affected nerve injured in UE due to direct trauma?
Most common cause of injury to radial n?