Can you inject teflon to help reduce knee pain instead of knee replacement?

No. Teflon is too abrasive and causes an aggressive inflammatory response in the knee.
No. This has not been studied so it is a topic of conjecture. Teflon provides a non-stick surface, but that is when it is attached to something else. Injecting it into your knee would not be toxic, but it would fail to address issues of mechanical wear or inflamamtion. Also, foreign material injected into a knee or other parts of the body can lead to infection or a foreign body reaction.

Related Questions

Knee pain. Knocked, hyperextended n arthritic knees. 56. Too young for knee replacement. Other treatment options?

Visco sup. Injection. Knee strengthening program which should also include core strengthening plus shock absorbing foot orthoses can be helpful. Also visco supplementation injections (syngvisc or Orthovisc) to help lubricate the joints and if in pain cortisone.

Knee pain, instability, and painful cracking. MRI notes meniscal degeneration, no tear and severe osteoarthritis. Am I looking at a knee replacement?

Maybe. Although the MRI shows severe Osteoarthritis the decision about knee replacement is based on how you are functioning rather than the MRI image. Physical Therapy, medications, weight control and non drug interventions (such as Tai Chi) can help to reduce pain/improve function. You may want to discuss a comprehensive program with your health care provider as well as an Orthopedic doctor.