Chapter 94 - Forearm Trauma and Diaphyseal Fractures

Question 1

mean maximal radial bow

Answer 1

mean of 15mm
located 60% distally along the axis of the radius

Question 2

complications of isolated radial shaft fractures

Answer 2

• iatrogenic injury to the PIN
• missed diagnosis of elbow pathology

Question 3

define a galeazzi injury

Answer 3

distal/shaft radius fracture plus a druj injury

Question 4

following ORIF of the radial shaft in a galeazzi fracture, if the DRUJ remains unreduced, now what?

Answer 4

open the DRUJ to look for interposed structures - most commonly the TFCC

Question 5

what finding at presentation indicates poor outcomes of non-op management in isolated ulnar fractures?

Answer 5

displacement >505 shaft width, angulation >10deg

Question 6

rehab for non-op ulnar fracture

Answer 6

immobilization x 2 weeks, then initiation of active ROM

Question 7

what percentage of non-op ulnar fx go on to non-union?

Answer 7

10%

Question 8

malunion of the radius with failure to restore the radial bow results in what?

Answer 8

20% loss of forearm rotation and loss of grip strength

Question 9

refracture risk following both bone forearm fixation?

Answer 9

increased risk with hardware removal prior to 1 year
also with 4.5mm screws

Question 10

unrecognized essex lopresti lesion can result in what deformity?

Answer 10

proximal migration of the radial shaft
dorsal displscement of the ulna
limited forearm supination and wrist extension

Question 11

internervous plane for dorsal thompson approach

Answer 11

ECRB (radial n) and EDC (PIN)

Question 12

internervous plane for volar henry

Answer 12

brachioradialis (radial n) and pronator teres/FCR (median n)