exam review
How do you know you have proper positioning on a PA wrist projection?
PA: distal radius and ulna, carpals, and proximal half of metacarpals should be seen. no rotation. open radioulnar joint space.
what should be seen on a properly positioned Lateral forearm projection?
1.elbow flexed 90 degrees
2. entire forearm, wrist and distal humerus in lateral position.
3.super imposed epicondyles.
4. superimposition of radius and ulna at their distal ends.
What type of joint are the Interphalangeal joints?
Synovial hinge joints
Greater multangular
How do you know you have proper positioning on a lateral wrist projection?
Lateral: superimposed distal radius and ulna. superimposed metacarpals, superimposed carpal bones
What type of joints are between the carpal bones, and metacarpal digits 2-5?
Synovial gliding joints
What type of joints are the metacarpophalangeal joints?
Synovial ellipsoidal joints.
permits flexion, extension, abduction, adduction and circumduction
What is another name for the Trapezoid bone?
Lesser multangular
How do you know you have proper positioning on a oblique wrist projection?
Oblique: carpals on lateral side of wrist should be seen (trapezium and scaphoid).
slight overlap of distal radius and ulna
45 degree rotation.
Open joint spaces.
What type of joints are the carpal bones?
Gliding joints
What is another name for the scaphoid bone?
Navicular bone
What is another name for the capitate bone?
OS Magnum
How is the Lateral forearm projection positioned?
flex elbow 90 degrees
medial aspect of forearm against the IR
humeral epicondyles and styloid process superimposed, perpendicular to IR.
thumb side of hand is up
What type of joint is the Radiocarpal joint?
Synovial ellipsoidal joint
What is another name for the Lunate bone?
Semilunar bone
What is another name for the Hamate bone?
OS Hamatum
what should be seen on a properly positioned AP forearm projection?
1. entire forearm, including wrist and distal humerus.
2.superimpositonof radial head, neck, tuberosity over the ulna
3.partially open elbow joint]
4. no elongation of humeral epicondyles.
What type of joint is the Radioulnar joint?
Synovial pivot joint
What is another name for the triquetrum bone?
Cuneiform bone
What is another name for the pisiform bone?
No other name, just the pisiform.