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Determining Age using Bones

Determining Age using Bones. How bones show AGE. # of bones (adults have fewer) Condition Growth plate vs epiphyseal line. Epiphysis – end of long bone Epiphysis line -growth plate Fused – bones joined together. Sutures. Sagittal -open less than 35 yrs

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Determining Age using Bones

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  1. Determining Age using Bones

  2. How bones show AGE • # of bones (adults have fewer) • Condition • Growth plate vs epiphyseal line

  3. Epiphysis – end of long bone • Epiphysis line-growth plate • Fused – bones joined together

  4. Sutures • Sagittal-open less than 35 yrs • Lambdoidal-starts at 21-closes at 30 yrs • Coronal-closed at 50 yrs

  5. X-ray of Bone Growth • https://www.youtube.com/watch?v=Plvd7eslg-Q • http://www.youtube.com/watch?v=0dV1Bwe2v6c

  6. What to Look For? • If the person is young: *Length of the bones (height) *Growth plate (epiphyseal line) Different bones fused at different times in our lives *Status of the teeth

  7. Young or Old?

  8. What to Look For? • In people over 20: • Epiphysis on sternal end of clavicle is last epiphysis to fuse at approximately 30 years

  9. What to Look For? • Over 30: • Look for deterioration • Less dense bones • More porous bones Normal X-ray Osteoporosis X-ray

  10. Best Bone for Age? • The pelvis!

  11. Ischium and Pubis • Ischium and pubis are almost completely united (7-8 years)

  12. Ileum, Ischium and Pubis • Ileum, ischium and pubis are joined together (13-14 years) • Ileum, ischium and pubis fully ossified (no epiphyseal unions) (20-25 years)

  13. Sacrum • Two lowest segments of sacral vertebrae are joined together (18 years) • All segments of sacrum are united (25-30 years)

  14. Back View of Sacrum

  15. Head and Tuberosities • Head and tuberosities are more defined at birth and join to become one epiphysis (6 years)

  16. Condyles • Radial head, trochlea and external condyle blend to unite with shaft (16-17) • Internal condyle unites with shaft (18)

  17. Upper Epiphysis • Upper epiphysis unites with shaft (20)

  18. Changes in Femur • Parts of the Femur

  19. Trochanters • Greater trochanter appears at age 4 • Lesser trochanter appears at ages13-14 • Head, greater and lesser trochanters join the shaft at age 18

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