Primary outcome measures
knee pain, pain
The NPRS was used to measure knee pain intensity. Patients were asked to indicate the average intensity of knee pain over the past 24 h. using an 11-point scale ranging from 0 (“no pain”) to 10 (“worst pain imaginable”) at baseline, 2 weeks, 6 weeks, and 6 months following the initial treatment session. The NPRS is a reliable and valid instrument to assess pain intensity [