“… 14 , 15 Soon after, the metabolic rhythms of the epiphysis and condylar cartilage were also studied in detail. 16 , 17 , 18 , 19 , 20 , 21 , 22 Additionally, research reported that, in the absence of alterations in environmental factors, the thickness and volume of articular cartilage also vary from day to night. 23 , 24 Collectively, these findings suggest the possibility of an autonomously controlled clock in cartilage.…”