POSI - LEC Flashcards
useful for evaluating joint space narrowing and showing articular cartilage disease
rosenberg method
RP: patellofemoral joint
hughston method
lateral image of the shoulder and proximal humerus is projected through the thorax
transthoracic method
humerus in exaggerated external rotation
rafert method
directed at a dual angle of 25 degrees anteriorly from the horizontal and 25 degrees medially
west point method
wedge shape compression
hill sachs
AP projection of shoulder places that humerus in true lateral position
external
projects acromioclavicular joint above the acromion
AP axial projection - alexander method
evaluated if the arm is extended upward or placed across the upper chest by grasping the opposite shoulder
body of scapula
patient lean back in a position of extreme lordosis
AP axial projection - lordotic position
The resulting image shows bony abnormalities of the anterior inferior rim of the glenoid and Hill-Sachs defects of the posterolateral humeral head in patients with chronic instability of the shoulder.
west point method
RP of AP shoulder
1 inches inferior to the coracoid process
RP for hand PA projection
3rd MCP
RP for hand lateral projection
2nd MCP
other name for unciform
hamate
carpal bones in lesser multangular
trapezoid
this evaluates early diagnosis of rheumatoid arthritis
bilateral AP oblique
demonstrates anterior and posterior displacement in fractures of metacarpals
lateral in flexion
coronal plane is parallel to the plane of the film in AP projection of humerus
epicondyle
RP for AP projection acute flexion of distal humerus
2” superior to the olecranon process
RP for acute flexion of proximal humeus
2” inferior to the olecranon process
it demonstrates the elbow joint, radius, ulna and proximal row slightly of distorted carpal bones
forearm AP projection
used to demonstrate the pisiform and hamate
AP oblique - mediolateral
RP for AP bilateral person method
acromioclavicular joint
scapula degree chuchu
45-60 degrees
steeper degree chuchu
25-35 degrees
used to be able to know the relationship between femoral and acetabulum
chassard lapine method
RP for hips AP projection
femoral head
humeral head in profile
external
They recommended two AP projections of the pelvis to show the relationship of femoral head and acetabulum in patients with congenital dislocation of the hips
marvs and taylor
RP for AP oblique projection - modified cleaves method
1” superior to pubic symphysis
RP for toes
3rd MTP joint
RP for foot
3rd base metatarsal
RP for knee joint
1/2” inferior to the patellar apex
CR of AP axial projection lordotic position
standing: 0-15 degrees
supine: 15-30 degrees
better image for carpal interspaces
AP
position of the wrist that demonstrates the scaphoid at right angle to the central ray
PA axial - stecher
position of the elbow that requires the anterior surface to form 45 degrees angle to the plane of the film
AP oblique - medial rotation
position of the elbow that demonstrates the coracoid process free from superimpositionn
AP oblique - medial rotation
position of the wrist that corrects foreshortening of the scaphoid
PA ulnar deviation
what structure is best demonstrated in AP lateral rotation of the elbow?
radial head
what structure is seen in profile without superimposition in tangential projection gaynor hart method for carpal?
pisiform
position of the hand used to evaluate early diagnosis of rheumatoid arthritis
PA projection
