Hydronephrosis of knee joint is not conducive to walking, which is a symptom of synovitis of knee joint. I also suffered from knee synovitis for more than a month. I can't walk fast, my legs are inconvenient to bend up and down the stairs, and my knees are still swollen. I went to the hospital for examination, and the doctor prescribed me hormone medicine, but I was afraid to take it. Later, I took Kang Kai Bio-company's formic acid protein capsules and ant Wang Bao. Now the knee is not swollen and walking is much more flexible, but the ant has fully recovered and is still taking medicine.