Rad Positioning - Humerus & Shoulder Full Deck Flashcards
2 Parts of shoulder girdle
Clavicle
Scapula
3 Joints of shoulder girdle
Sternoclavicular joint
Acromioclavicular joint
Scapulohumeral joint
Intertubecular groove
Groove between greater tubercle and lesser tubercle
Intertubecular groove is a.k.a. ____
Bicipital groove
Glenoid cavity
Cavity between humeral head and scapular neck
Acromial extremity (end)
Lateral end of clavicle
Sternal extremity (end)
Medial end of clavicle
3 Borders of scapula
Superior
Medial (vertebral)
Lateral (axillary)
Scapulohumeral joint is a.k.a. ____
Glenohumeral joint
Glenohumeral joint is a.k.a. ____
Scapulohumeral joint
Type of joint - Scapulohumeral
Spheroidal (ball & socket)
Type of joint - Sternoclavicular
Plane (gliding)
Type of joint - Acromioclavicular
Plane (gliding)
Another term for mid area of costal surface of scapula?
Subscapular fossa
AP Proximal Humerus (external rotation) - Epicondyles parallel or perpendicular to IR?
Parallel
Lateral Proximal Humerus (internal rotation) - Epicondyles parallel or perpendicular to IR?
Perpendicular
Oblique Proximal Humerus (neutral rotation) - Epicondyles to IR?
45 degrees oblique
CR location of AP Humerus
Midhumerus
CR location for Lateral humerus
Midhumerus
AP Humerus criteria
Entire humerus
Greater tubercle in profile
Medial & lateral epicondyles in profile
Lateral Humerus criteria
Entire humerus
Lesser tubercle in profile
Epicondyles superimposed
Shoulder girdle - kVp technique
Analog 70-75 kVp
Digital 75-85 kVp
4 Common shoulder pathologies
-AC joint separation/dislocation
-Bursitis
-Rotator cuff tear
-Tendonitis
Bursitis
Inflammation of fluid filled sacs enclosing joints
Rotator cuff tear - 4 muscles
Muscle injury
-teres minor
-supraspinous
-infraspinous
-scubscapularis
Tendonitis
Tearing of tendon causing inflammation
Bankart lesion
Injury to anterioinferior aspect of labrum
Caused by anterior dislocation of humerus
Hills-Sachs defect
Compression fracture of posterolateral humeral head during dislocation
Caused by anterior dislocation of humeral head
Idiopathic chronic adhesive capsulitis
Disability of shoulder joint
Caused by chronic inflammation in and around joint
Pain & limited motion
Glenoid labrum
Ring of fibrocartilage that runs around glenoid cavity
Impingement syndrome
Outer border of scapula pinches rotator cuff beneath it
Osteoarthritis
Lack of synovial fluid
Bone on bone arthritis
aka DJD Degenerative Joint Disease
Osteoporosis
Bones less dense
More porous
Bones appear darker on X-ray
Rheumatoid arthritis
Chronic autoimmune disease causing inflammation/pain in joints
Shoulder dislocation
Traumatic removal of humeral head from glenoid cavity
AP Humerus
Taken w/ grid due to thick shoulder
Body slightly rotated so shoulder & proximal humerus are in contact w/ IR
Arm is slightly abducted, hand supinated
Epicondyles parallel to IR
Lateromedial humerus
Patient’s back to IR
Body slightly rotated so humerus in contact w/ IR
Rotate arm internally, hand pronated
Epicondyles perpendicular to IR
Mediolateral humerus
Patient facing IR
Body rotated so humerus in contact w/ IR
Flex elbow 90 degrees
Humerus - external rotation
Greater tubercle in profile on lateral aspect of humeral head
Condyles parallel to IR
Humerus - internal rotation
Lesser tubercle in profile on medial aspect of humeral head
Condyles perpendicular to IR
Tubercle locations for External humerus
Greater tubercle - laterally in profile
Lesser tubercle - anteriorly
Shoulder girdle joints - classification
Synovial
Shoulder girdle joints - mobility type
Diarthrodial
Projection for Hill-Sachs defect
AP internal shoulder
Exaggerated external shoulder
Axillary lateral shoulder
Projection for Bursitis
AP shoulder
Lateral shoulder
Projection for Idiopathic chronic adhesive capsulitis
AP shoulder
Lateral shoulder
Projection for Impingement syndrome
Scapular Y, Neer method
Projection for Osteoarthritis
AP shoulder
Lateral shoulder
Projection for Osteoporosis
AP shoulder
Lateral shoulder
Projection for Rheumatoid arthritis
AP shoulder
Lateral shoulder
Projection for shoulder dislocation
Scapular Y
Transthoracic lateral
Garth method
Projection for Bankart lesion
AP internal shoulder
Scapular Y
Grashey