No announcement yet.

Cervical Biomechanics

This topic is closed.
  • Filter
  • Time
  • Show
Clear All
new posts

  • Cervical Biomechanics

    ================================================== ===================== 66
    Following is a summary of the responses received as a result of my query
    regarding movement patters of the head. Thanks to all those who sent

    ================================================== =====================
    Received: from ODUVM by ODUVM (Mailer R2.10 ptf000) with BSMTP id 7410; Thu, 04
    Aug 94 18:18:05 EDT
    Received: from by (IBM VM SMTP V2R2) with TCP;
    Thu, 04 Aug 94 18:18:03 EDT
    Received: by (5.57/Ultrix3.0-C)
    id AA12961; Thu, 4 Aug 94 18:21:54 -0400
    Date: Thu, 4 Aug 94 18:21:54 -0400
    From: (Jack Winters)
    Subject: Movement patterns of head

    Diego, several items that may be of interest:

    1. Fast horizontal head tracking:
    As a grad student of L. Stark's at UC Berkeley, I was a subject for
    number of experiments, published by Zangemeister et al. in the
    early 1980's (Exp. Neurol., 71:76-91, 1981; 75: 369-406; Biol. Cybern,
    41:19-32, 33-45, 1981, etc.), some involving normals, others
    pathological conditions) and by Hannaford in the mid-1980's
    (e.g., Biol. Cybern., 57:321-330, 1987). 2-4 EMG's and horizontal
    (axial) rotation collected.

    2. While at Arizona State Univ., several of my students collected
    head tracking data in 3D, for both natural and fast movements
    (vertical, horizontal, oblique, "box" patterns) - 3D motion and
    8 EMGs measures (e.g., Peles thesis, 1989; Winters & Peles, Mult.
    Musc Sys. book I edited in 1990; Winters et al. in Spine. 9:1178-1185).
    We only did about 10 "normal" subjects and 20 "whiplash" subjects.
    More importantly, a company called Whiplash Analysis Inc was formed
    in Phoenix, and since I left (to east coast) the've done at last
    count over 60 subjects (normals & injured), and have a patent on
    a technique for using the 3D screw axis to assess function -- they'll
    probably respond separately, I'd guess. Some interesting data.

    3. The Rehab Robotics group at the AI duPont Inst. in Wilmington,
    Delaware recently collected a good deal of data on 3-D ranges of
    motion and max isometric strength for the head-neck system, and
    have a conf. proceeding (4th Intern. Rehab Robotics) and a tech.
    report nearing completion. I'm now working with them on some
    new experiments aimed at determining impedance fields for the
    head-neck system via several techniques, mainly frequency response
    (position input, force measured, for various position operating ranges
    and instruction sets) data. Results will be compared to some
    simulations I'll be doing. Overall objective: the optimize use of
    the head as a control system for spinal-cord injured.

    4. We've had several head-neck mechancial musculoskeletal models
    since the late 1980's, and last year the modelling framework was
    put into a dynamics package called SPACAR, from Delt Univ. This
    model serves several (competing) objectives: Frans van der Helm
    and myself are using various versions for theoretical studies of
    posture and stability; with Univ. of Delaware, I'll be using it for
    "impedance field" and "control systems" research, while with
    Whiplash Analysis, it will eventually be used better identify
    where injuries are located, etc. The trouble is that some of
    research needs beg for the model to be simplified, some for it
    to be more complex, so the modelling framework's still somewhat
    in flux. Two head-neck models seem to be evolving, one for
    "control", one for "clinical assessment".

    Jack Winters
    Catholic Univ., Washington, DC
    z winters pluto 8/04/94
    'Jack Winters 8/04/94 Movement patterns of head
    ================================================== ===================== 38
    Received: from ODUVM by ODUVM (Mailer R2.10 ptf000) with BSMTP id 7734; Thu, 04
    Aug 94 19:20:41 EDT
    Received: from MELIA.QUT.EDU.AU by (IBM VM SMTP V2R2) with TCP;
    Thu, 04 Aug 94 19:20:40 EDT
    Received: from PATHWORKS-MAIL by (PMDF V4.3-7 #5543)
    id ; Fri, 5 Aug 1994 09:22:41 EST
    Date: Fri, 05 Aug 1994 09:22:41 -0500 (EST)
    From: Tim Barker
    Subject: Re: Cervical Spine
    X-Envelope-to: DRR100F@ODUVM.CC.ODU.EDU
    MIME-version: 1.0
    Content-type: TEXT/PLAIN
    Content-transfer-encoding: 7BIT

    You might like to follow-up an abstract that I saw from 17th Annual Meeting of
    the American Society of Biomechanics (published in Journal of Biomechanics
    vol 27, n 5, May 1994, page 630) :

    Three dimensional kinematic analyses of control and whiplash subjects using
    instantaneous helical axis parameters
    T Ribaudo 1, K Long 2, P Osterbauer 2, G Yamaguchi 1 & A Fuhr 2
    1 Dept of Chemical, Bio and Materials Engineering, Arizona State Uni,
    Tempe, AZ 85283, U.S.A
    2 Whiplash Analysis Inc. Phoenix, AZ 85018, U.S.A.


    Tim Barker, PhD
    Scholl of Mechanical
    & Manufacturing Engineering
    Queensland University of Technology
    Brisbane. QLD 4001
    z t.barker qut 8/04/94
    'Tim Barker DRR100F@ODUVM.CC.OD 8/05/94*Cervical Spine
    ================================================== ===================== 32
    Received: from ODUVM by ODUVM (Mailer R2.10 ptf000) with BSMTP id 4465; Sat, 06
    Aug 94 08:12:38 EDT
    Received: from by (IBM VM SMTP V2R2)
    with TCP; Sat, 06 Aug 94 08:12:37 EDT
    Received: from by with SMTP id AA17609
    (5.65c/IDA-1.4.4 for ); Sat, 6 Aug 1994 22:14:53
    Received: from by
    (PMDF V4.3-7 #2554) id ; Sat,
    6 Aug 1994 22:10:05 +1000
    Date: Sat, 06 Aug 1994 22:10:05 +1000
    Subject: Cervical SPine,
    Sender: Peter Bryner
    X-Envelope-To: DRR100F@ODUVM.CC.ODU.EDU
    X-Vms-Cc: X94402
    Mime-Version: 1.0
    Content-Transfer-Encoding: 7BIT

    Dear Diego,
    Dr Trianos, formerly of National College of Chiropractic in Chicago USA,
    and now at the Texas Back Institute (I think) has looked at this problem.
    Unfortunately I don't have his address at this stage. If you have difficulty
    contacting him call me back and I'll chase his address up.

    Peter Bryner,
    RMIT, Department of Chiropractic and Osteopathy
    z X94402 pitvax 8/06/94
    'P.Bryner@pitvax.xx. DRR100F@ODUVM.CC.OD 8/06/94 Cervical SPine,