A<unk>  is a medical condition in which a bone is cracked or broken.  While many<unk> s are the result of high force impact or stress,<unk>  can also occur as a result of certain medical conditions that weaken the bones, such as osteoporosis, certain types of cancer or osteogenesis imperfecta.
Bone fracture
Bone infarction
Osteolysis
Osteomyelitis
Pseudarthrosis
Synarthrosis
Osteonecrosis of the jaw
Hair loss