Abstract: An articulating bearing knee including a guide post that in a first orientation allows substantially free varus and valgus distraction, but in another constrains the same. The guide post in includes a superior portion that engages a femoral component of a knee prosthesis in a rotated orientation. When the guide post engages the femoral component it may not distract as if it was not engaged. This allows for a control and constraint of such distraction when the knee is rotated and in a weaker position.

Abstract: An articulating bearing knee including a guide post that in a first orientation allows substantially free varus and valgus distraction, but in another constrains the same. The guide post in includes a superior portion that engages a femoral component of a knee prosthesis in a rotated orientation. When the guide post engages the femoral component it may not distract as if it was not engaged. This allows for a control and constraint of such distraction when the knee is rotated and in a weaker position.

Abstract: A dispersant system for formulating stable non-aqueous siliceous particulate slurries, comprising a vehicle comprising a liquid ester, and a dispersant comprising an alkoxylated aminoalcohol and organophosphate ester. Siliceous particulate slurries in accordance with the present invention can include slurries containing siliceous ceramic particulate (i.e., silicon nitride, silicon carbide, silica, and silicon metal powders partially oxidized by air exposure). A wide variety of linear and cyclic organic esters can be used as a vehicle component, including lactones. The alkoxylated aininoalcohol is typically an ethoxylated aminoethanol oligomer. A wide variety of aromatic and nonaromatic organophosphate ester compounds can be used for the second dispersant component.