What is Achilles Tendon?


The Achilles tendon is located on the back of the lower leg. It connects the muscles to the heel
bone and is of great importance in the process of running, i.e., movement. It is the strongest
tendon in the human body, and it is about 15 cm long. The Achilles tendon is significant since
the muscles of the calf rotate the foot around the ankle joint through it, simultaneously enabling
various foot positions, and in this way, we are enabled to stand on our toes, bounce while
running, and jump.

The Achilles tendon, which attaches to the rear of the heel bone, is the strongest tendon in the
human body. The muscles in the rear of the lower leg move the foot by extending the Achilles
Where the Achilles tendon attaches to the heel bone behind the heel is typically the location of
the pain. Exercise causes it to become stronger at first and weaker later. Tendon thickness is the
primary symptom in addition to discomfort. Any activity that strains the tendon aggravates the
symptoms. Often, the discomfort does not come on with effort, but rather the next day, when the
tendon also becomes hard.

Term “tendinosis”
The term tendinitis was dropped from use because the suffix -itis indicates an inflammatory
process, so the name tendinosis of the Achilles tendon is more recent. Research into the causes of
damage to the bone-joint system, the so-called overexertion syndrome, revealed that
inflammation does not occur in the tendon as previously assumed.

The Achilles tendon tendinosis is one of the overstrain disorders. Achilles tendonosis, as
opposed to tendinitis, which refers to an acutely inflamed tendon, is a deteriorated, chronic
tendon that develops because of untreated tendinitis. The fibers that make up the tendon are
deteriorating. Along with pain, this degradation also results in the growth of scar tissue, which
may thicken the tendon permanently.

Some individuals report feeling a grinding in the tendon. The Achilles tendon can develop
tendinosis in several locations: at the point where it attaches to the heel bone, where it is
typically brought on by the protrusion of the heel bone (the condition known as Haglund's
disease), at the point where the tendon joins the muscle (the condition known as myotendinosis),
and finally on the tendon itself (the condition known as tendinosis), which is also the most
frequent localization and will be the only one discussed in the
The action of stresses on the Achilles tendon when walking and/or running, which are
aggravated by the effect of specific predisposing variables, is associated to the onset of
tendinosis of the Achilles tendon. Anatomical abnormalities of the feet (such as dropped feet),
excessive pronation of the feet while walking and/or running, an imbalance between the strength
and flexibility of the muscles that make up the Achilles tendon, age (the elasticity of the tendon
decreases with aging), and a weaker blood supply to the middle third of the tendon are among the
athlete-related factors that should be mentioned. This last factor is thought to be the most crucial.
An unsuitable running surface (such as asphalt), frequent changes in the surface, abrupt changes
in the duration and/or frequency of training, and the most significant and prevalent
factor—unsuitable and worn sports shoes—should be noted among the external factors that
increase the likelihood of tendinosis of the Achilles tendon.

The athlete must first cut back on running, which is the painful exercise. The Achilles tendon can
be relieved by placing an elevation (1 to 2 cm) under the heel. You should have this elevation in
all of your shoes, not just athletic footwear; it must be under both heels. As soon as the first signs
arise, the athlete should begin passive stretching exercises for the Achilles tendon and apply ice
to the sore area four to five times per day for ten minutes (but not directly on the skin or massage

To carry out an effective course of treatment, it is crucial to underline the necessity of seeing a
doctor to identify all the variables that contributed to the development of tendinosis.

Back to blog