title: Holding power of cortical screws after power tapping and hand tapping.
abstract: Paired equine third metacarpal bones were drilled and tapped for 4.5 mm and 5.5 mm cortical screws. Tapping was done by hand or with an air-driven reversible orthopedic drill. Screws were inserted and subjected to extraction forces to failure of the osseous threads or the screws. There was no difference in holding power of either screw size between hand-tapped and power-tapped holes.
authors.affiliation: Department of Clinical Sciences, College of Veterinary Medicine, Mississippi State University, Starkville.
authors.forename: J P
authors.initials: JP
authors.lastname: Gillis
authors.forename: L D
authors.initials: LD
authors.lastname: Zardiackas
authors.forename: J A
authors.initials: JA
authors.lastname: Gilbert
authors.forename: K R
authors.initials: KR
authors.lastname: St John
mesh_terms: D000818:Animals; D001863:Bone Screws / Q000592:standards / Q000662:veterinary*; D006736:Horses / Q000601:surgery*; D008663:Metacarpus / Q000601:surgery* / Q000648:ultrastructure; D008855:Microscopy, Electron, Scanning