Product Overview
Model 1008 was developed to create a knee joint with the axis of motion located posteriorly to the upright bars. Model 1008 is fully interchangeable with our posterior offset ring lock (model 1012). Therefore, it may easily be converted to a ring lock by ordering the model 1012 rings.
(https://www.beckerorthopedic.com/Product/KneeJoints/1000KneeSeries/1008)