II. Physiology: Ossification Centers in order of appearance on XRay (Mnemonic: CRITOE)

  1. Capitellum
    1. Girls: 1 year
    2. Boys: 2 years
  2. Radial Head
    1. Girls: 3 year
    2. Boys: 4 years
  3. Internal or medial epicondyle
    1. Girls: 5 year
    2. Boys: 6 years
  4. Trochlea
    1. Girls: 7 year
    2. Boys: 8 years
  5. Olecranon
    1. Girls: 9 year
    2. Boys: 10 years
  6. External or lateral epicondyle
    1. Girls: 11 year
    2. Boys: 12 years

III. Resources

  1. Dr. Yamamoto, Pediatrics, University of Hawaii
    1. http://www.hawaii.edu/medicine/pediatrics/pemxray/v1c11.html

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