What is the popping I hear after knee replacement surgery?

Normal. As it is a man-made device, it is not unusual to hear/feel painless clicking in your knee after a successful knee replacement. If concerned, have your surgeon re-evaluate your knee.
Metal on Plastic. The knee prosthesis we use to resurface or replace your joint is made of metal and plastic. When the two pieces contact each other it is not uncommon to notice a pop or click. There are other far less common reasons too, like instability, where the knee is loose.

Related Questions

Help please! Is forcing knee to bend after knee replacement surgery okay?

Whoa... ..Only as part of your rehabilitative physical therapy. Don't force anything. Follow your surgeon's and therapists' advice. Good luck. Read more...

Will a person be able to walk normally after knee replacement surgery?

Yes much better. Total knee replacement is made to reduce pain and improve function. Patients walk much better after recovering from a total knee than they did before total knee surgery. Most walk close to normal or normal once they have fully recovered. Read more...

When will I be able to walk after knee replacement? How soon after knee replacement surgery will I be able to walk on my own..

6 weeks. All depend of the surgeon protocol and what kind of total knee was done.In general you should be able to start walkink with a walker 2d day after surgery with partial wb.You could be walking on your own probably after 4 to 6 weeks. Read more...

Is hoarseness common after knee replacement surgery?

Surgery. Hoarseness is common after most surgeries. The breathing tube can be very irritating to the throat. Read more...
Yes. If your anesthesia included intubation, then a tube was likely placed into your throat to help you breath and that can often cause hoarseness for several days after your surgery. Read more...
Not really, knee replacement surgery is very painful post operatively and is associated with blood clots and hemorrhage, major regional helps with all these and is preferred as anesthesia and wouldn't include a breathing tube. Read more...
No! Knee replacement surgery can be done with various types of anesthesia: spinal, epidural, nerve blocks, and general anesthesia. Only GA involves a breathing tube which might irritate the airway. So knee replacement carries a low risk for hoarseness. However, it is rare even with GA. The breathing tube is a smooth flexible plastic. Experienced anesthesiologists use them all the time w/o problems. . Read more...
Depend on anesthesia. It really depends on the type of anesthesia you received during your knee replacement. If you had undergone general anesthesia, most likely they put some form of a breathing device (either a breathing tube or a laryngeal masked airway), both of which can cause some throat discomfort afterwards. If you had regional anesthesia (spinal / epidural), without a general anesthesia, then it is uncommon. Read more...