AIPGMEE 2011 :QUESTION & ANSWERS WITH EXPLANATIONS

Q1.Most common nerve injured in supracondylar fracture humerus?

A. Median
B. Radial
C. Ulnar
D. Anterior interosseous nerve

ANS:ANTERIOR INTEROSSEOUS NERVE



Nerve injury in supracondylar fracture of humerus


Nerve injuries occur in about 40% of type III (Gartland’s classification) supracondylar fractures

Earlier literature stated that radial nerve was the most commonly injured nerve in supracondylar fractures

But recent studies indicate that the anterior interosseous branch of median nerve is mostly affected

Nerve involvement differ with the type of fracture
Anterior interosseous nerve is mostly affected during posterolateral displacement of the distal fragment
Radial nerve is mostly affected with posteromedial displacement
Ulnar nerve is involved in flexion type of supracondylar fracture