Human bones are not made with the iron. It is just made with little hard material. Accidents can take place at anytime. Even while walking a person can skip and fall down. Immediately he will not get pain, after one hour the nerves will be dismantled from the bone, now at this time a person will get pain. Especially a person after forty years must have to be very careful, because already bones are weak for him, the reason is for forty years the bones helped him to run, walk and jump.
But big accidents can break the bones even a person is just twenty years old. However, after that the pain will be very heavy. He cannot bare the pain, naturally he has to go to the doctor, and the doctor will give simple medicines, if the bones are just cracked. But if the bones are dismantled physician will ask the patient to go for the surgery.
The surgery will take place on a particular day; it is not that the person is alright now, after the operation. He or she must do some exercises to set the bone; he can do only dictated exercises by the Wisconsin physical therapy. Generally, back bone needs regular exercise, if the person is doing regularly exercises for his backbone he or she would not be in trouble with the simple accidents, because the bones are getting stronger by the exercises.
When a person is normal and not even walking or she will face bone problem even for the minor accidents. Therefore, for physical fitness the exercises are must for the both gender, once a person is physically fit he or she could do any job and for longtime without any pain in the body, this is well known fact for all.