THUMB: 1ST DIGIT

Question 1

PP: Hand in extreme internal rotation
RP: 1st MCP joint
CR: ┴
SS: AP projection of thumb

Answer 1

AP PROJECTION

Question 2

PP: Hand in lateral position; dorsal surface of thumb // to IR
RP: 1st MCP joint
CR: ┴
SS: Magnified PA projection of thumb

Answer 2

PA PROJECTION

Question 3

PP: Hand in its natural arched position; palmar surface down
RP: 1st MCP joint
CR: ┴
SS: Lateral projection of thumb

Answer 3

LATERAL PROJECTION

Question 4

PP: Hand in slight ulnar deviation; thumb abducted
RP: 1st MCP joint
CR: ┴
SS: PA oblique projection of thumb

Answer 4

PA OBLIQUE PROJECTION