Wednesday, 17 May 2017

APPEARANCE OF OSSIFICATION CENTRES AT VARIOUS JOINTS


Wrist Joint:

OSSIFICATION CENTRE
APPEARANCE
FUSION
Capitate
2 months
-
Hamate
3 months
-
Triquitral
3 years
-
Lunate
4 years
-
Traphezium, Traphezoid and Scaphoid
5-6 years
-
Pisiform
10-12 years
-
Lower end of Ulna
5-6 years
17-18 years
Lower end of Radius
2 years
18-19 Years

·         Capitate is the first carpal bone to appear.
·         Pisiform is the last carpal bone to appear.
·         2 carpal bones at the age of 1 and 2 years.
·         3 carpal bones at the age of 3 years.
·         4 carpal bones at the age of 4 years.
·         8 carpal bones at the age of 12 years.

Elbow Joint:

OSSIFICATION CENTRE
APPEARANCE
FUSION
Capitulum
1 year
-
Medial Epicondyle
5-7 years
16-17 years
Trochlea
9-11 years
-
Lateral Epicondyle
11 years
-
Conjoint Epiphysis(By the fusion of Lateral epicondyle, Trochlea and Capitulum)
Formed at 14-16 years
16-17 years
(Lower end of Humerus)
Mentioned
16-17 years

Shoulder Joint:
OSSIFICATION CENTRE
APPEARANCE
FUSION
Head
½ -1 year
-
Greater Tubercle
3 years
-
Lesser Tubercle
5 years
-
Conjoint Epiphysis
5-6 years
18-19 years
Acromion Process
14-15 years
17-18 years

Hip Joint
OSSIFICATION CENTRE
APPEARANCE
FUSION
Head of femur
½ -1 year
17-18 years
Greater trochanter
4 years
17-18 years
Lesser trochanter
12-14 years
17-18 years
Tri-radiate Cartilage
-
13-15 years
Iliac crest
14 years
18-20 years
Ischial Tuberosity
16-17 years
20-21 years

Knee Joint:
OSSIFICATION CENTRE
APPEARANCE
FUSION
Lower end of Femur
9th month of IUL
18-19 years
Upper end of Tibia
10th month (At birth)
18-19 years
Upper end of Fibula
4 years
18-19 years

Ankle Joint: 
OSSIFICATION CENTRE
APPEARANCE
FUSION
Lower end of Tibia
1 year
16-17 years
Lower end of Fibula
1 year
16-17 years

Sternum:
Sternum is made up of Manubrium, Body and Xiphisternum; The body is made up of 4 pieces.
OSSIFICATION CENTRE
APPEARANCE
FUSION
Manubrium
5th month
Fuses with First piece of body at old age
First piece of body
5th month
4th piece fuses with 3rd piece at 14 years and remaining pieces fuse with one another between 14-25 years.
2nd piece of body
7th month
3rd piece of body
7th month
4th piece of body
10th month (At birth)
Xiphisternum
3 years
Fuses with 4th piece at 40 years

Foot:
OSSIFICATION CENTRE
APPEARANCE
Calcaneum
5th month
Tallus
7th month
Cuboid
10th month (At birth)