Monckeberg&;s calcific sclerosis affects the medium-sized muscular aeries by involving

Monckeberg medial sclerosis is characterized by calcification of the walls of muscular aeries, typically involving the internal elastic membrane. Persons older than age 50 are most commonly affected. The calcifications do not encroach on the vessel lumen and are usually not clinically significant.Ref: Robbins; 9th edition; Chapter 11; Blood Vessels; Page no: 490