title: Ultrafast laser ablation and machining large-size structures on porcine bone.
abstract: When using ultrafast laser ablation in some orthopedic applications where precise cutting/drilling is required with minimal damage to collateral tissue, it is challenging to produce large-sized and deep holes using a tightly focused laser beam. The feasibility of producing deep, millimeter-size structures under different ablation strategies is investigated. X-ray computed microtomography was employed to analyze the morphology of these structures. Our results demonstrated the feasibility of producing holes with sizes required in clinical applications using concentric and helical ablation protocols.
authors.affiliation: McMaster University, Department of Engineering Physics, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada.
authors.forename: Ran
authors.initials: R
authors.lastname: An
authors.forename: Ghadeer W
authors.initials: GW
authors.lastname: Khadar
authors.forename: Emilia I
authors.initials: EI
authors.lastname: Wilk
authors.forename: Brent
authors.initials: B
authors.lastname: Emigh
authors.forename: Harold K
authors.initials: HK
authors.lastname: Haugen
authors.forename: Gregory R
authors.initials: GR
authors.lastname: Wohl
authors.forename: Brett
authors.initials: B
authors.lastname: Dunlop
authors.forename: Mehran
authors.initials: M
authors.lastname: Anvari
authors.forename: Joseph E
authors.initials: JE
authors.lastname: Hayward
authors.forename: Qiyin
authors.initials: Q
authors.lastname: Fang
mesh_terms: D000818:Animals; D004867:Equipment Design; D053685:Laser Therapy / Q000295:instrumentation / Q000379:methods*; D019637:Orthopedic Procedures / Q000295:instrumentation / Q000379:methods*; D013131:Spine / Q000000981:diagnostic imaging / Q000601:surgery*; D013552:Swine; D013997:Time Factors; D055114:X-Ray Microtomography