How will I know if I had a successful knee replacement surgery?


The success of knee replacement surgery can be felt with better mobility, less pain and a better quality of life post-surgery. Also, the surgery is successful if there are no postoperative complications such as infection, increased pain, rejection, etc. If the implant fails, then the surgery is considered unsuccessful. 

The signs of a loosened knee or an instable joint are popping or clicking sound, pain, sensation of the joint moving in and out of the socket and swelling around the replaced knee joint. 

Can my body reject an artificial knee after replacement surgery?

Rarely. The chances of a body rejecting an artificial knee after replacement surgery are possible but rarely. Implant rejection, or metal hypersensitivity, happens when the metal in the implant triggers a reaction in the patient’s body. This can be an allergic reaction or an autoimmune response by the body.

Research states that the patients with a history of metal allergy shall be thoroughly examined before the surgery. They can be examined through dermatological and laboratory testing. However, in order to diagnose metal hypersensitivity or metal reactions, there is no globally accepted diagnostic algorithm or laboratory. The most common test to determine the metal hypersensitivity is a patch test.

What are the signs of a knee replacement rejection?

The most common symptoms of a failed knee implant are pain, decreased joint function, knee instability, and swelling or stiffness in the knee joint.

The signs of an infection at the replaced knee joint include pain, redness, swelling, drainage, instability, and poor healing at surgical site. But, if the infection is severe, the patient may experience fever, nausea, vomiting, fatigue and severe muscle ache. 

Other symptoms of a rejection can be a reduced range of motions and warmth or heat around the joint.

 However, in general, knee replacement surgery has a high success rate, and the possibility of rejection is fairly low.  

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