Is hoarseness common after knee replacement surgery?

Surgery: Hoarseness is common after most surgeries. The breathing tube can be very irritating to the throat.

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

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.

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.

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.