Treatment cost
In the present study, the health care provider perspective was used to evaluate the costs of intra-articular injection approaches. In this regard, only direct costs, including the cost of products such as kits, the procedures for preparation, and medication-related costs were considered for the analysis, and indirect costs were not included, although their importance (considered the same between different groups in order to make the analysis easier). To estimate the treatments cost we used the medical tariffs for public medical centers and hospitals, approved by the Iran Ministry of Health and Medical Education in 2021. (Conversion rate: 1 dollar equals 42,000 Rials) [