A therapeutic splint for the treatment of one or more joint areas of a patient. The splint includes longitudinal housings extending along a longitudinal axis (L) and arranged parallel to this longitudinal axis (L)； one or more modular cartridges with therapeutic effect suitable for being arranged in the housings according to the joint area (s) to be treated. The splint further includes at least one transverse and/or oblique housing extending along one or more transverse and/or oblique axes (O), respectively, with respect to the longitudinal axis (L) of the splint. The transverse and/or oblique housing is arranged so as to cover an area extending around a joint to be treated. The modular cartridge or cartridges are arranged in the transverse and/or oblique housings according to the joint area(s) to be treated.
