3. WHY TO DETERMINE BONE AGE?
1) IMPORTANT IN MANAGEMENT OF SHORT STATURE
BONE AGE < CHRONOLOGICAL AGE= GROWTH HORMONE
DEFICIENCY/ CONSTITITUTIONAL DELAY
BONE AGE=CHRONOLOGICAL AGE = FAMILIAL SHORT STATURE
BONE AGE > CHRONOLOGICAL AGE = HYPERGONADISM, CAH
2) IN DECIDING WHEN TO START AND STOP GROWTH HORMONE
SUPPLIMENTATION.
3) IN FORENSIC MEDICINE- MINOR CANT BE TRIED IN NORMAL
COURTS
4) REPLACEMENT THERAPY FOR HYPOGONADISM.
5) GNRH FOR PRECOCIOUS PUBERTY.
6) PREDICTION OF FINAL HEIGHT.
5. IN NEWBORNS
ONLY INDICATION IS CONGENITAL HYPOTHYROIDIS
EPIPHYSIS AT LOWER END OF FEMUR
AND UPPER END OF TIBIA SHOULD BE
PRESENT IN A NORMAL NEWBORN.
THEIR ABSENCE INDICATES DELAYED
BONE AGE OF INTRAPARTUM CAUSE.
MC IS HYPOTHYROIDISM
6.
7. XRAY OF NEWBORN
IF YOU DONT FIND OSSIFICATION CENTRE FOR ANY CARPAL
BONE THEN THE AGE IS DEFINATELY BETWEEN 1-3 MONTHS
FIRST CARPAL BONE TO APPEAR
CAPITATE
20. OSSIFICATION CENTRES
ELBOW= BY 16 YEARS ALL EPIPHYSIS FUSED
ANKLE= BY 17 YEARS ALL EPIPHYSIS FUSED
KNEE= BY 18 YEARS ALL EPIPHYSIS FUSED
WRIST= BY 19 YEARS ALL EPIPHYSIS FUSED
21. NON FUSED < 16 YRS
FUSED > 16 YEARS
EPIPHYSIS AROUND ELBOW