Absence of sesamoid bone in girl of age about normal range of puberty is said to have:
PHV-Peak height velocity occurs approximately at 12 years in girls and 14 years in boys and ossification of ulnar sesamoid of hand occurs roughly 6 months before the PHV. 
Key Concept: 
The absence or delayed presence of sesamoid bone is due to delay in reaching puberty.
Completed the growth
Overgrowth
Delay in reaching puberty
All of the above
Delay in reaching puberty