Fig.1 Photomicrographs of the Achilles tendon. A-F, Photomicrographs of the Achilles tendon (Masson trichrome stain; original magnification, ×100).

Representative images from, A-C, 4-week postoperative period (A: C group, B: L-PRP group, C: H-PRP group) and, D-F, 8-week postoperative period (D: C group, E: L-PRP group, F: H-PRP group) are shown.