Endoprosthesis - a prosthesis of any organ or its individual elements located within the human body Source: <Letter> of the Ministry of Health and Social Development of Russia dated 05.05.2006 No. 2317-ВС <Methodological Recommendations on Providing Persons with Disabilities with Technical Rehabilitation Aids within the Framework of the Federal List of Rehabilitation Measures, Technical Rehabilitation Aids and Services Provided to Persons with Disabilities>