Mortada, M., Kotb, L. and Amer, Y. 2021. Impact of ultrasonography detected quadriceps calcific tendinopathy on pain and function in patients with primary knee osteoarthritis. Reumatismo. 73, 2 (Aug. 2021), 111–116. DOI:https://doi.org/10.4081/reumatismo.2021.1381.