Tuesday, January 1, 2013

Trick of the Trade: Ossification centers of the elbow


Fracture or a normal ossification center?

This is a common question heard when viewing an xray of a pediatric elbow. How do you remember the timing of normal ossification centers? FYI, the xray images above are normal and have no fractures.


Trick of the Trade:
The mnemonic CRITOE 1-3-5-7-9-11

  • Age 1 year:    Capitellum
  • Age 3 years:   Radial head
  • Age 5 years:   Internal (medial) epicondyle
  • Age 7 years:   Trochlea
  • Age 9 years:   Olecranon
  • Age 11 years: External (lateral) epicondyle





This great video is from a relatively new YouTube channel that I stumbled upon called "Radiology Channel", which is a Radiopaedia.org project featuring short polished presentations by Dr Andrew Dixon, Dr Frank Gaillard and Dr Jeremy Jones.

5 comments:

  1. I always had an easier time remembering Come-Ride-My-Train-Of-Love. (replaced with medial and lateral epicondyle)

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  2. I was taught "Come Rub My Tree Of Love." I guess we're a bit dirty in Canada. Has a memorable ring to it, though!

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  3. Yes, definitely more memorable, R-rated memory aid. Thanks for the tip!

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  4. Some years ago I wrote a blog piece about this very topic (together with a Dire Straits reference!):

    http://theoctopustrap.blogspot.com.au/2010/03/neon-burning-up-above.html

    (I've also realised that I've neglected my blog for some years.)

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    Replies
    1. Nice! If you have items that you'd like to share on an as-needed basis, I'd love to have you post some on our blog.

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