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ligament avulsion off the humeral origin
64%
782/1229
ligament avulsion off the ulnar insertion
20%
242/1229
midsubstance rupture
10%
126/1229
bony avulsion of the humeral origin
5%
59/1229
combined proximal and distal ligament avulsions
1%
13/1229
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The lateral ulnar collateral ligament (LUCL) is often injured with elbow dislocations, and is most commonly injured at the proximal origin. McKee noted that in 62 consecutive operative elbow dislocations and fracture/dislocations, the LUCL was ruptured in all of the patients, proximally in 32, bony avulsion proximally in 5, midsubstance rupture in 18, ulnar detachment in 3, ulnar bony avulsion in only 1, and combined patterns in 3. Pugh et al established a standard protocol to treat elbow fracture dislocations (terrible triad) which includes coronoid repair, radial head repair/replacement, LUCL repair, and MCL and/or external fixation as needed.
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