IntroductionDistal radius fractures are one of the most common types of fractures, it accounts up to 25% of fractures in children [1] and up to 18% of fractures in the over 65 age group [2,3,4].The treatment depend on several factors of stability: the radial length, the metaphysical comminution and the age of patients. But, whatever is the type of treatment (conservative or surgical), it relies on standard values of palmar tilt, radial inclination and ulnar variance to evaluate the good correction of fracture. While palmar tilt and radial inclination have well defined values, the UV miss a specific value to lay on for correction. Three aspects of UV are known: neutral, positive and negative, with different incidences in normal population where the neutral aspect is the most frequent and therefore it is considered as the standard aspect of assessment during surgery. This UV is also considered as the most consistent predictor of radiographic outcome between the other parameters of reduction (palmar tilt and radial inclination) [5][6][7][8][9], therefore the relevance of procedures of reduction, except the internal fixation, remained uncertain due to the imprecision to restore the initial