A1: Fibula is a part of the appendicular skeleton, and it develops via endochondral ossification in the body. This ossification begins at three main points in the fibula, which are as follows:Shaft at around 8th gestational week.Distal end by the end of the first year of life.Proximal end when the child is around 4-years old if male and 3-years-old if female.Ossification centers of the distal end and the shaft of the bone eventually fuses during the mid-adolescent years, which is 15 years for females and 17 years for males. The proximal part's bony centers and fibula's shaft are the last fibula parts to unite. This occurs at the late-adolescent years, which is 17 for females and 19 for males.