Rowen has posted at least three videos of Barbie’s knee issue.

1-Video #1 posted April 23, 2015, Prolozone Helps Bad Knee in Overweight Woman

Barbie is a Sailor, she has knee pain in both knees, her knees are both swollen, her right knee is worse than her left knee, she wasn’t able to bend her right knee, after ozone injections, she is able to walk normally, and she is able to get up out of a chair without using her hands

2-Video #2 posted May 8, 2015, Prolozone and Integrative Care Quickly Changes Woman's Life

This is a follow-up appointment. Barbie says she has changed her diet. She also thanks Rowen for the ozone to her knees, that she used to have to go up the stairs one step at a time “like an eighty year old person,” but now she can go up the stairs normally.

3-Video #3 posted September 25, 2015, Woman and her Knees Transformed by Ozone Therapy and Diet Part 2

This is basically the same video as Video #2.