Achilles Tendinopathy is a Troublesome Sports-related Condition Involving Blood Vessel Ingrowth into the Tendon Tissue - Studies on the Adjacent Plantaris Tendon and the Peritendinous Connective Tissue Suggest that TNF-alpha can be Highly Involved in the Vascular and Tissue Changes Topics: Physiotherapy and Rehabilitation; Sports Medicine In Proceedings of the International Congress on Sports Science Research and Technology Support icSPORTS - Volume 1, 45-50, 2013 , Vilamoura, Algarve, Portugal