III. Physiology: Ossification Centers in order of appearance on XRay (Mnemonic: CRITOE)
- Capitellum
- Girls: 1 year
- Boys: 2 years
- Radial Head
- Girls: 3 year
- Boys: 4 years
- Internal or medial epicondyle
- Girls: 5 year
- Boys: 6 years
- Trochlea
- Girls: 7 year
- Boys: 8 years
- Olecranon
- Girls: 9 year
- Boys: 10 years
- External or lateral epicondyle
- Girls: 11 year
- Boys: 12 years
IV. Resources
- Dr. Yamamoto, Pediatrics, University of Hawaii