Are lubricants an alternative to knee surgery?

They seem to help with knee pain, but only to a limited extent, for a limited time and in certain patients.

Injections can delay knee replacement surgery for as long as a year or two, said Dr. Donald T. Reilly [cq], an attending orthopedic surgeon at New England Baptist Hospital. That’s a decided advantage since artificial knees, like real ones, eventually wear out, he said.