Achilles tendinopathy

What Causes the Achilles Tendon to Feel Stiff and Painful After Resting?

1. Introduction Achilles tendon stiffness and pain following a period of rest is primarily caused by Achilles tendinopathy, a condition characterized by structural degeneration and altered fluid dynamics within the tendon fibers. During periods of inactivity, extracellular fluid accumulates around the tendon, and the disorganized collagen fibers cool down, becoming significantly less compliant. When the … Read more

Can wearing flat shoes cause inflammation in the Achilles tendon?

1. Introduction Wearing flat shoes can directly cause severe inflammation in the Achilles tendon by abruptly increasing the mechanical and eccentric load placed on the tissue. A lack of heel elevation forces the ankle into a deeper state of dorsiflexion during every step, which requires the Achilles tendon to stretch significantly further than it would … Read more

Why do my Achilles tendons feel completely stiff and painful first thing in the morning?

1. Introduction Profound stiffness and sharp pain in the Achilles tendons during the first few steps out of bed is the hallmark clinical presentation of Achilles tendinopathy. During the night, while the body remains completely immobile, the local physiological environment of the tendon undergoes significant alterations. Inflammatory exudate accumulates within the fascial sheath, the lubricating … Read more