Longest bone

Excluding a variable number of sesamoids (small rounded bones), there are 206 bones in the adult human body, compared with about 300 for children (as they grow, some bones fuse together). The thigh bone, or femur, is the longest. It constitutes 27.5% of a person's stature normally, and may be expected to be 50 cm (19.75 in) long in a man measuring 180 cm (5 ft 11 in) tall. The longest recorded bone was a femur measuring 76 cm (2 ft 6 in), which belonged to Constantine, a German giant.