Surface Geometry Of The Human Ankle Joint
Human ankle joint specimens were dissected and the dimensions required for lubrication analysis were measured. In planes parallel to the principal direction of motion, the radii of curvature of the tibial surfaces were slightly larger than those of the corresponding regions of the talar surfaces. A detailed error analysis was performed to ensure that this result was accurate. Also, length and width of the articulating regions and cartilage thicknesses were recorded. Based on the measurements of the present study an equivalent bearing geometry for the human ankle was proposed which had a reduced radius of 0.35 m for the curved surfaces.