Talking to your child or teenager about their condition isn’t easy. With practical advice and support, we can help. Our qualified experts can answer your questions and help manage your concerns.
Share this article
Let us start from the basics: what are bones made of? The main component of a bone is bone matrix, which is a mixture of a fibrous protein called collagen and an inorganic compound mostly made of calcium and phosphate. All bones have an outer surface called periosteum, a very thin membrane with nerves (that feel pain) and blood in it. The compact bone is the smooth and very hard part of the bone; it’s what we see when looking at the skeleton. The spongy bone is lighter than the compact bone, but still very strong. The inside of a bone is hollow,and filled with a jelly called bone marrow.
The bones of a human skeleton are classified in two major types: the axial skeleton and the appendicular skeleton. Put simply, the axial skeleton includes the bones of the head and torso, and the appendicular skeleton means the appendage or limb bones. Axial skeleton has about 80 bones and appendicular skeleton has 126 bones. The main functions of the skeleton are to give shape to our body, provide attachment for muscles and produce red blood cells.
The longest, largest and hardest bone is the thigh bone, also known as Femur:
There are 5 types of bones in the human body:
Fractures heal at different rates, depending on the age of the child and type of fracture, but in general a child’s bone heals faster than an adult, due to some differences in the bone structure. In children the periosteum is thicker, stronger and more active to better supply oxygen and nutrients to the growing bones, and this helps rebuild the bone in case of fracture. Its inner part contains very vital cells able to produce new bone.