There are many complications which are part and parcel of the knee replacement surgery. Under the general complication head there are bleeding, pains, blood clots, difficulty while urinating, unsightly scarring. Specific complications of this operation are loosening, damage to the nerves and infection in the knee. Severe pain, stiffness and loss of use of the joints are the major implication which will definitely affect your life style very much. Hence it’s a difficult operation and there are many after effects which will definitely aggravate if the operation is not done by a professional. These complications must be addressed with time and if proper care is not taken the operation must have to be redone.