AGE IDENTIFICATION FROM BONES

AGE IDENTIFICATION FROM BONES

Ossification centres present before birth

• 2 months – Upper segments of sacrum, Mandible
• 5 months – Middle segments of sacrum
• 6 months – Calcaneum
• 7 months – Talus
• 8 months – Lower segments of sacrum
• 9 months – Lower end of femur
• 10 months – Upper end of tibia 

X-Rays Before 25 years

Region selected for X Ray	Age
	Girls	Boys
Elbow	13 -14	15 -17
Wrist	16 – 17	18 – 19
Shoulder	17-18	19-20
Crest of Ilium	18 -19	20 – 21
Ischial Tuberosity	21 – 220	23 – 24

• Number of ossification centres at 11th week of IU life – 806

• Number of ossification centres at birth – 450
• Number of bones in adult skeleton – 206
• Appearance & fusion of ossification centre in females can be in advance of the male upto 1 year

Pelvis

Shoulder

Elbow

Wrist: Appearance of carpal bones

Ossification centres of the distal radius and ulna

• distal radius: 1 year
• distal ulna: 5-6 years

Ossification centres 

t 6 monthst 1% -2 yearsr 2 yearst 2 – 6yearst 5-Tyearsr 8-9yearsr 8 -10 yearsr 10 – l2yearst 12 – 13 yearsr 13 – 14 yearsr 16 – 18 yearsr l8 – 20 yearst 2O – 2lyearst 2l – 23 years-+-+-+-+J-+-+-)–))-)-+J-+Center appears upper end of tibia and head of hurnenrs@I 1s).Posterior fontanelk closes4llMs 8e).Anterior fontanelle closesallMs 8e).Two halves of mandible unite.Age = number ofcarpal bones.Centre for meadial epicondyle of humerus appears.7th carpal bone appears.Center for olecranon appears.Last carpal bone (pisiform) appears.Fusion of medial epicondyle of humerus.Fusion of lateral epicondyle of humerus.Ossffication complete atelbow, hip, ankle, metacarpals, metatarsals andallphalanges.Ossification complete at shoulder, wrist and knee joints.Ossification complete at iliac crest.Ossification complete at ribs, inner end of clavicle units and ischial tuberosity unites.

Don’t Forget to Solve all the previous Year Question asked on AGE IDENTIFICATION FROM BONES
Click Here to Start Quiz