Fig. 1
From: Biodegradable polymer nanocomposites for ligament/tendon tissue engineering
(Adapted from [52])
a and b Structure of a twisted or cable yarn. Fibers are combined to form bundles, bundles to form strands, and strands to form cords. Yarns were labeled: A(a) × B(b) × C(c), where A, B, C represent the number of fibers/bundles/strands in the final structure, respectively and a, b, c is the number of turns per inch on each of the hierarchical levels