osteoplaque

os·te·o·plaque

(os'tē-ō-plak),
Any osseous layer.
[osteo- + Fr. plaque, plate]

osteoplaque

(1) A calcified lamina—e.g., in an artery with atherosclerosis; calcified plaque. Osteoplaque is not used in the working medical parlance. 
(2) A nonspecific term for a layer of osseous tissue.