tibia

"Under the meat of a drumstick, you'll find two bones -- the tibia, which is long and thick, and the fibula, which is much shorter and thinner," Manafzadeh explained.

He said the 13-week-old had suffered multiple serious injuries including abusive head trauma, retinal haemorrhage, extensive face and neck bruising and a fracture of the tibia.

Sticking out his left leg from the open-door vehicle in an attempt to brace for impact, Foster suffered major fractures of his tibia and fibula.

Outcomes vary for tibia fractures, which are generally rare, but most people need a few months to recover.

When the resident removed the bone pieces from the sand, they thought that they were actually a human tibia, broken near the ankle, according to the website.