CA2640075A1 - Methods for determining pedicle base circumference, pedicle isthmus and center of the pedicle isthmus for pedicle screw or instrument placement in spinal surgery - Google Patents

Methods for determining pedicle base circumference, pedicle isthmus and center of the pedicle isthmus for pedicle screw or instrument placement in spinal surgery Download PDF

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Publication number
CA2640075A1
CA2640075A1 CA002640075A CA2640075A CA2640075A1 CA 2640075 A1 CA2640075 A1 CA 2640075A1 CA 002640075 A CA002640075 A CA 002640075A CA 2640075 A CA2640075 A CA 2640075A CA 2640075 A1 CA2640075 A1 CA 2640075A1
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CA
Canada
Prior art keywords
pedicle
lines
isthmus
vertebral body
outer cortical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002640075A
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French (fr)
Other versions
CA2640075C (en
Inventor
Hector O. Pacheco
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Leucadia 6 LLC
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2640075A1 publication Critical patent/CA2640075A1/en
Application granted granted Critical
Publication of CA2640075C publication Critical patent/CA2640075C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
    • A61B17/1757—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the spine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B2017/564—Methods for bone or joint treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/06—Measuring instruments not otherwise provided for
    • A61B2090/061—Measuring instruments not otherwise provided for for measuring dimensions, e.g. length
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/10—Computer-aided planning, simulation or modelling of surgical operations

Abstract

A method of determining the pedicle base circumference and the pedicle isthmus to facilitate screw placement in a pedicle of a vertebral body during spinal surgery, comprising providing a series of first lines tangential to the outer cortical surface of the vertebral body in and near the pedicle on a transverse section from a three-dimensional image of the vertebral body, providing a series of second lines extending through the vertebral body in and near the pedicle thereof in perpendicular relation to the series of first lines, identifying the pedicle base circumference as the areas of the outer cortical surface where adjacent second lines are at the greatest angle with respect to one another, and identifying the pedicle isthmus as the areas of the outer cortical surface where the second lines that are opposed to each other are closest to being parallel to one another. The center of the pedicle isthmus is identified from a cross- section thereof as the intersection of two lines derived from the centers of infinitesimal orthogonal second perpendicular lines from the outer cortical surface.

Claims (6)

1. A method of determining the pedicle base circumference and the pedicle isthmus for enabling optimum screw or instrument placement in a pedicle of a vertebral body during spinal surgery, comprising:
creating a three-dimensional image of the vertebral body, creating an image of the outer cortical shell of the vertebral body by taking a section of the three-dimensional image in a transverse plane;
providing on the transverse section a series of first lines tangential to the outer cortical surface of the vertebral body in and near the pedicle;
providing a series of second lines substantially perpendicular to the series of first lines, said second lines extending through the vertebral body in and near the pedicle thereof;
identifying the pedicle base circumference as the areas of the outer cortical surface where adjacent second lines are of the greatest angle with respect to one another; and identifying the pedicle isthmus as the areas of the outer cortical surface where said second lines that are opposed to each other are closest to being parallel to one another.
2. The method of Claim 1 wherein infinitesimal points are utilized on the outer cortical surface for the placement of said first lines and said second lines.
3. The method of Claim 2 wherein the anatomical three-dimensional locations of the pedicle base circumference and pedicle isthmus are determined by collating infinite transverse sections defining the pedicle base circumference and pedicle isthmus.
4. The method of Claim 1 further comprising identifying the center of the pedicle isthmus from a cross-section thereof as the intersection of two lines derived from the centers of infinitesimal orthogonal second lines extending from the outer cortical surface.
5. The method of Claim 1 which is performed by computer-generated imaging.
6. The method of Claim 1 which is performed manually from two-dimensional sections of the vertebral body.
CA2640075A 2006-01-24 2007-01-24 Methods for determining pedicle base circumference, pedicle isthmus and center of the pedicle isthmus for pedicle screw or instrument placement in spinal surgery Expired - Fee Related CA2640075C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US76136506P 2006-01-24 2006-01-24
US60/761,365 2006-01-24
PCT/US2007/002001 WO2007087381A2 (en) 2006-01-24 2007-01-24 Methods for determining pedicle base circumference, pedicle isthmus and center of the pedicle isthmus for screw placement

Publications (2)

Publication Number Publication Date
CA2640075A1 true CA2640075A1 (en) 2007-08-02
CA2640075C CA2640075C (en) 2012-07-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2640075A Expired - Fee Related CA2640075C (en) 2006-01-24 2007-01-24 Methods for determining pedicle base circumference, pedicle isthmus and center of the pedicle isthmus for pedicle screw or instrument placement in spinal surgery

Country Status (8)

Country Link
US (1) US8277461B2 (en)
EP (1) EP1976441B1 (en)
JP (1) JP4892005B2 (en)
KR (1) KR101286362B1 (en)
CN (1) CN101374470B (en)
AU (1) AU2007208271B2 (en)
CA (1) CA2640075C (en)
WO (1) WO2007087381A2 (en)

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US8842893B2 (en) 2010-04-30 2014-09-23 Medtronic Navigation, Inc. Method and apparatus for image-based navigation
US11806197B2 (en) 2010-06-29 2023-11-07 Mighty Oak Medical, Inc. Patient-matched apparatus for use in spine related surgical procedures and methods for using the same
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Also Published As

Publication number Publication date
CA2640075C (en) 2012-07-17
CN101374470A (en) 2009-02-25
AU2007208271B2 (en) 2012-04-26
WO2007087381A2 (en) 2007-08-02
AU2007208271A1 (en) 2007-08-02
KR101286362B1 (en) 2013-07-15
CN101374470B (en) 2011-01-05
WO2007087381A3 (en) 2007-12-21
EP1976441B1 (en) 2013-03-13
JP4892005B2 (en) 2012-03-07
EP1976441A2 (en) 2008-10-08
EP1976441A4 (en) 2012-09-12
US20070232960A1 (en) 2007-10-04
US8277461B2 (en) 2012-10-02
KR20080098621A (en) 2008-11-11
JP2009524488A (en) 2009-07-02

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