Hand Fx

Question 1

Bennett Fx

Answer 1

Fx of the base of the thumb metacarpal, usually leaving a volar ulna fragment attached to a retaining ligament w/ radial subluxation of the metacarpal.

Question 2

Crush Fx

Answer 2

term used for comminuted impaction of any bone, but for the finger is distal phalanx fx resulting from crush injury.

Question 3

Mallet fx

Answer 3

(Baseball finger, drop finger ) Avulsion fx of the extensor tendon from the dorsal base of the distal phalanx of any digit that includes insertion of extensor apparatus, thus allowing distal segment to “drop” into flexion:

Question 4

Rolando Fx

Answer 4

An intra-articular comminuted fx of the base of the thumb metacarpal resulting in y- or t-shaped fx at the base of the metacarpel.

Question 5

Unciform Fx

Answer 5

Fx of the “hook of hamate” usually caused by direct trauma that may or may not be associated w/ unlar neuropathy.

Question 6

Wilson Fx

Answer 6

Involves the proximal volar portion of the middle phalanx