title: Calcium pyrophosphate deposition in ligamentum flavum.
mesh_terms: D000368:Aged; D002131:Calcium Pyrophosphate / Q000378:metabolism*; D011756:Diphosphates / Q000378:metabolism*; D006801:Humans; D008022:Ligaments / Q000378:metabolism*; D008297:Male; D013131:Spine
chemical_list: D011756:Diphosphates; D002131:Calcium Pyrophosphate