title: Comparative biomechanical stability of titanium bone fixation systems in metacarpal fractures.
abstract: The biomechanical properties of apex bending and torsional rigidity of 11 different titanium mini- and microplates (Leibinger and Synthes) were examined to evaluate the effects of plate design and thickness and screw size and design. Two hundred sixteen fresh-frozen human cadaveric metacarpal bones underwent a midshaft transverse osteotomy followed by application of one of the following plates: Synthes 1.5-mm and 2.0-mm five-hole linear plates; Leibinger linear 1.2-mm 5-hole, 1.7-mm 4-hole, 2.3-mm 4-hole plates; or Leibinger three-dimensional 1.2-mm 4-hole, 1.2-mm 8-hole, 1.7-mm 4-hole, 1.7-mm 8-hole, 2.3-mm 4-hole, and 2.3-mm 8-hole plates. The specimens were subjected to a three-point bending test with apex dorsal or apex volar loading or torsional loading. Analysis of variance statistical analysis revealed that increasing plate thickness and, more significantly, three-dimensional design were associated with increased rigidity.
authors.affiliation: Department of Surgery, Indiana University Medical Center, Indianapolis, USA.
authors.forename: C D
authors.initials: CD
authors.lastname: Prevel
authors.forename: M
authors.initials: M
authors.lastname: McCarty
authors.forename: T
authors.initials: T
authors.lastname: Katona
authors.forename: K
authors.initials: K
authors.lastname: Moore
authors.forename: J R
authors.initials: JR
authors.lastname: Jackson
authors.forename: B L
authors.initials: BL
authors.lastname: Eppley
authors.forename: R
authors.initials: R
authors.lastname: Sood
mesh_terms: D001696:Biomechanical Phenomena; D001860:Bone Plates; D001863:Bone Screws; D004867:Equipment Design; D005593:Fracture Fixation, Internal / Q000295:instrumentation*; D050723:Fractures, Bone / Q000503:physiopathology / Q000601:surgery*; D006230:Hand Injuries / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D008663:Metacarpus / Q000293:injuries* / Q000503:physiopathology; D014025:Titanium; D016474:Weight-Bearing / Q000502:physiology
chemical_list: D014025:Titanium