Physiopathology of intratendinous calcific deposition

Table 2 Different theories about etiopathogenesis of calcific tendinopathy (CT).

Type	Cause	Reference(s) by first author	Year(s)
Degenerative calcification	Vascular ischemia	Sandstrom [12]	1938
	Repetitive trauma	Bishop [13] and Bosworth [14]	1939, 1941
	Necrosis of tenocytes and intracellular calcium accumulation	Mohr [17]	1990
Reactive calcification	Active cell mediated process	Uhthoff [27]	1997
Endochondral ossification	Endochondral ossification of fibrocartilage at the enthesis of the tendon	Benjamin [34]	2000
Chondral metaplasia	Erroneous differentiation of tendon-derived stem cells (TDSCs)	Rui [46]	2011