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About the arterial anatomy of the Achilles tendon (tendo calcaneus)

I read with great interest the article ‘‘The Arterial Anatomy of the Achilles Tendon: Anatomical Study and Clinical Implications’’ by Chen et al. (2009). The authors make it perfectly clear that although the Achilles tendon is one of the longest and strongest tendons in the body, it is the most frequently ruptured tendon in the lower limb and accounts for almost 20% of all large tendon injuries. They highlight the fact that in the past 50 years numerous published studies have described the blood supply of the Achilles tendon. Pertaining to the fact that one of my papers was referenced (Niculescu and Matusz, 1988), I want to bring to your attention the important ontogenic dynamics between the grade of intrinsic vascularity of the tendon and its correlation with lesions of the tendon. In the referenced article, we microscopically analysed the total vascularized surface of transverse sections of the tendon at three different levels (musculo-tendinous junction, middle part of the tendon, and bony insertion of the tendon). We compared these values in three distinct categories of study groups (fetuses and children, adults 31–50 years of age, and adults over 51 years old). In the samples from fetuses and children, we also studied the vascular surface at the level of the calcaneal tuberosity. Percentile values on the useful vascular surface in our study groups (Table 1) clearly point out two aspects: