“…This increase has led to definitions of tendinopathy that implicate a wide variety of factors including accumulated damage [2,22,23], altered ECM [15,24], decreased time to heal [2,[25][26][27], and increased cell number and cell rounding [13,28,29]. More recently, research has identified other possible factors, such as metabolic disease [12,30], age [22,31], tendon compression [32,33], tendon location or function [34], and genetics [22] as possible additions to this list. One perspective regarding the reparability of tendon separates tendon into two discrete parts, intrinsic and extrinsic compartments, that perform different, but coordinated functions during tendon healing [12].…”