Bone length:Len:Pt:{First bone reference}+{Second bone reference}:Qn:Measured
bone length:len:pt:{first bone reference}+{second bone reference}:qn:measured
Bone length:Length:To identify measures at a point in time:{First bone reference}+{Second bone reference}:Quantitative:Measured
bone length:length:to identify measures at a point in time:{first bone reference}+{second bone reference}:quantitative:measured