Thumb Stuff

Question 1

Anterior oblique PDT (proximal Distal Taut)

Answer 1

Palmar tubercle on trapezium

Palmar base of thumb metacarpal

Abduction, extension, and opposition

Question 2

Ulnar collateral PDT (proximal Distal Taut)

Answer 2

Transverse carpal ligament Palmar-ulnar base of thumb metacarpal Abduction, extension, and opposition

Question 3

First inter metacarpal PDT (proximal Distal Taut)

Answer 3

Dorsal-radial side of base of second metacarpal Palmar-ulnar base of thumb metacarpal with ulnar collateral Abduction and opposition

Question 4

Posterior oblique PDT (proximal Distal Taut)

Answer 4

Posterior surface of trapezium

Dorsal-ulnar base of thumb metacarpal

Abduction and opposition

Question 5

Radial collateral aka dorsal radial. PDT (proximal Distal Taut)

Answer 5

Radial surface of trapezium

Dorsal surface of thumb metacarpal

All movements to varying degrees except extension

Question 6

O.K. of of adbduction and adduction of the thumb

Answer 6

Sagittal plane movement around a medial-lateral axis of rotation through the metacarpal

Question 7

O.K. Flexion and extension of thumb

Answer 7

Frontal plane movement around an anterior-posterior axis of rotation through the trapezium

Question 8

A.K. of of adbduction and adduction of the thumb

Answer 8

Abduction: palmar roll and dorsal slide

Adduction: dorsal roll and palmar slide

Question 9

A.K. Flexion and extension of thumb

Answer 9

Flexion: medial roll and slide

Extension: lateral roll and slide

Question 10

Describe the zig-zag deformity of the thumb

Answer 10

CMC joint flexion and adduction, MCP joint hyperextension, and IP joint flexion