A<unk>  is a break in a<unk> . If more pressure is put on a<unk>  than it can stand, it will split or break. A break of any size is called a<unk> .<unk> s are usually very painful.
Bone fracture
Bone infarction
Osteolysis
Osteomyelitis
Pseudarthrosis
Synarthrosis
Osteonecrosis of the jaw
Hair loss