A system and method for the field of humeral components for shoulder joint prostheses and, more specifically, to a method for constructing a range of humeral components intended to be inserted into the proximal region of the humerus during reconstructive shoulder surgery includes the following steps: obtaining a set (Evs) of statistical data relating to variables that can be used to characterise the geometry of a proximal humerus region from morphometric data (Dm) of proximal humerus regions belonging to a representative sample of a population； based on a statistical distribution, determining a set (G) of sizes forming the range of humeral components； for each of the sizes, determining a measurement (MiTn-n) for each of the variables, according to the set of statistical data； and for each of the sizes, producing a humeral component according to the measurement of each of the variables corresponding to the size.
