Figure 10.

Proposed flow chart of tendon degeneration starting with the healthy Achilles tendon and extrinsic a nd/or intrinsic factors over asymptomatic states with increase in tendon diameter and detectable capillary blood flow and/or Power Doppler flow to symptomatic states and consecutive tendon rupture. Created by Knobloch with accomplishments to Richards et al. 2005, Maffuli et al. 2000, Kannus et Josza 1991.