Klos K, et al. - Researchers assessed the microperfusion of three possible posterior approaches to the hindfoot and different areas of the Achilles tendon. Compared to the microcirculation centrally on the tendon, soft tissue microcirculation on the lateral and medial side of the healthy Achilles tendon was better. Proximally, compared to the medial approach, the lateral approach was better. Advantages regarding the surgical approach could be provided by these circumstances. Significantly reduced microperfusion at the typical side of degeneration and rupture was exhibited by the Achilles tendon. This circumstance could be a probable cause of degenerative processes.