2.6. Pilot study
KOA
OSTEOARTHRITIS
We performed a pilot study on 5 patients. In this regard, the first 5 cases who were diagnosed with KOA received the interventions as determined in the pre-generated random numbers. The pilot study aimed to check the difficulties and challenges of the study, as the researchers were not sure of the study feasibility. The researchers continued the study when they faced no significant challenges or difficulties. In addition, the reliability of the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) scale of the first 5 cases was measured from the pilot study.