S. Matsuda et al., KNEE KINEMATICS OF POSTERIOR CRUCIATE LIGAMENT SACRIFICED TOTAL KNEE ARTHROPLASTY, Clinical orthopaedics and related research, (341), 1997, pp. 257-266
Two different posterior stabilizing mechanisms in posterior cruciate l
igament sacrificing total knee arthroplasty were evaluated to test kne
e kinematics, tibiofemoral contact location, and the quadriceps force
needed to extend the knee, A posterior stabilizing post and a deeply d
ished polyethylene with a high anterior lip (anterior buildup stabiliz
ing tibial articular surface) were tested in four anatomic specimen kn
ees with a knee kinematics testing device, Both posterior stabilizing
mechanisms partially restored anteroposterior stability, but the knees
were still more lax than were the normal knees in the anteroposterior
direction, The anterior buildup stabilizing tibial articular surface
decreased rotational laxity in early flexion, Tibiofemoral contact loc
ation in the knees with the anterior buildup stabilizing tibial articu
lar surface did not move posteriorly as the knee flexed, and the knees
with this articular surface required significantly more quadriceps fo
rce to extend the knee than did the knees with a stabilizing post.