Biomaterial Database

Porosity in manually mixed bone cement. 1988

U Lindén

Department of Orthopaedic Surgery, University Hospital, Linköping, Sweden.

Forty-six samples of acrylic cement mixed by seven nurses were analyzed for porosity by correlated roentgenograms and microscopy studies. Mean porosity was 26.7 vol % +/- 9.21 vol % with large variations among specimens. There was also a gross variation of the pore size. The pore size exceeded 300 micron in 23% of the specimens, with a wide scatter of percentage porosity produced by each nurse. A manual mixing technique lacks reproducibility and produces cements with uncontrollable porosity.

UI	MeSH Term	Description	Entries
D001843	Bone Cements	Adhesives used to fix prosthetic devices to bones and to cement bone to bone in difficult fractures. Synthetic resins are commonly used as cements. A mixture of monocalcium phosphate, monohydrate, alpha-tricalcium phosphate, and calcium carbonate with a sodium phosphate solution is also a useful bone paste.	Bone Cement,Bone Glues,Bone Pastes,Bone Glue,Bone Paste,Cement, Bone,Cements, Bone,Glue, Bone,Glues, Bone,Paste, Bone,Pastes, Bone
D004339	Drug Compounding	The preparation, mixing, and assembly of a drug. (From Remington, The Science and Practice of Pharmacy, 19th ed, p1814).	Drug Formulation,Drug Preparation,Drug Microencapsulation,Pharmaceutical Formulation,Compounding, Drug,Formulation, Drug,Formulation, Pharmaceutical,Microencapsulation, Drug,Preparation, Drug
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000388	Air	The mixture of gases present in the earth's atmosphere consisting of oxygen, nitrogen, carbon dioxide, and small amounts of other gases.