[Static radiological measurements of lower limb deformities (author's transl)]

A new method is described which employs three angular components for complete definition of lower limb deformities. These three angles can be the three static angles observed in two large films, anteroposterior and profile, of the two lower limbs (flexion-recurvation, varus-valgus, axial rotation). A more precise definition of the deformity is the rotation of the oblique axis which transforms a normal lower limb (the other side if it is healthy) into a deformed one. In this concept, two angles determine the axis, another angle defining the rotation around this axis. The technique is described and the theory exposed, simple cases being able to be resolved by pure geometry, the matricial theory enabling data processing of other cases by means of a pocket calculator.