AJ Ackerman described in 1955 the swing lock prosthesis. This was also described at later dates by Simmons, 1963, Brown, 1970, Sprigg, 1977, and Armany.
La prótesis swing-lock fue descrita por Ackerrn iT en 1955 y algunos otros autores como Simmons 1963, Brown 1970, Sprigg 1977, Armany.