ABSTRACT
The knee joint is one of the most complex and most frequently injured joints in the body (DeHaven and Lintner, 1986; Zarins and Adams, 1988) A model which defines the limits of normal knee movement comprises primary ligamentous restraints interacting with the other static stabilisers (osseous geometry, capsular structures, and menisci) and with the dynamic muscle stabilisers (Fu, 1993). The anterior cruciate ligament (ACL) is the principal ligamentous restraint to anterior tibio-femoral displacement (TFD) (Butler, Noyes and Grood, 1980).
