Results in a defect in the surface of the joint. A localized pocket of serous fluid and cellular components. Commonly secondary to an infection but may also be a sterile abscess with no infectious origin Achilles Pertaining to the Achilles tendon. The largest, most powerful tendon in the human body. Origin is above and below the posterior knee.
Insertion is the posterior calcaneus.
Aiken O.F. Aiken. Twentieth century physician who described the Aiken procedure for the correction of hallux valgus.