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subtalar joint axis

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  1. podstudent2
    Thread

    Spiral of archimedes and STJ axis?

    im sorry im such an idiot, can someone please explain: how the stj acts like a mitered hinge the spiral of archimedes and stj ankle and...
    Thread by: podstudent2, Aug 4, 2009, 1 replies, in forum: Biomechanics, Sports and Foot orthoses
  2. Robertisaacs
    Thread

    Planal dominance of the STJ axis

    Planal dominance of which joint and when? How does this influence our prescription variables and why should I refer these cases to Dennis...
    Thread by: Robertisaacs, Jun 3, 2009, 21 replies, in forum: Biomechanics, Sports and Foot orthoses
  3. Kevin Kirby
    Thread

    In Vivo Tests of Improved Method for Functional Location of STJ Axis

    Our research paper on a new method for locating the three-dimensional location of the subtalar joint axis has just been listed in the "Articles in...
    Thread by: Kevin Kirby, Dec 2, 2008, 2 replies, in forum: Biomechanics, Sports and Foot orthoses
  4. Robertisaacs
    Thread

    Challenging SALRE

    I hope no one will mind if i break this off the superiority thread. There was a lot going on there and this is such a great question i feel it...
    Thread by: Robertisaacs, Nov 20, 2008, 109 replies, in forum: Biomechanics, Sports and Foot orthoses
  5. Kevin Kirby
    Thread

    STJ Axis Location and Computational Modeling

    Thought some of you might be interested in some of the exciting new prospects that are on the horizon for use of STJ axis location in...
    Thread by: Kevin Kirby, Nov 17, 2008, 1 replies, in forum: Biomechanics, Sports and Foot orthoses
  6. Kevin Kirby
    Thread

    Subtalar Joint Axis Locator

    Here is a video on the Subtalar Joint Axis Locator that Dr. Simon Spooner and I designed and developed together in 2005. We also had a...
    Thread by: Kevin Kirby, Nov 16, 2008, 39 replies, in forum: Biomechanics, Sports and Foot orthoses
  7. David Smith
    Thread

    Re examining and Defining terms for STJ axial position

    Dear All and particularly Kevin Kirby When locating and marking the position of the STJ axis it is common to find that it is medially rotated....
    Thread by: David Smith, Sep 25, 2008, 2 replies, in forum: Biomechanics, Sports and Foot orthoses
  8. Robertisaacs
    Thread

    STJ motion, stupid question

    I wish / need to avail myself of the knowledge of the community. Specifically the bit where Kevin said there was no such thing as a stupid...
    Thread by: Robertisaacs, Mar 26, 2008, 12 replies, in forum: Biomechanics, Sports and Foot orthoses
  9. Kevin Kirby
    Thread

    T.E. #9: Simultaneous Ankle and STJ Equilibriums

    Thought Experiment #9: Simultaneous Ankle Joint and Subtalar Joint Equilibrium Equations When ground reaction force (GRF) acts on the plantar...
    Thread by: Kevin Kirby, Feb 16, 2008, 23 replies, in forum: Biomechanics, Sports and Foot orthoses
  10. Kevin Kirby
    Thread

    STJ Axis and CoP Position and Muscle Moments

    I have moved this from the Midfoot Stiffness thread to start a new discussion: One thing that's bothered me for a while: If a patient is...
    Thread by: Kevin Kirby, Dec 1, 2007, 1 replies, in forum: Biomechanics, Sports and Foot orthoses
  11. NewsBot
    Thread

    Subtalar neutral position as an offset for a kinematic model of the foot during walki

    Subtalar neutral position as an offset for a kinematic model of the foot during walking Jeff R. Houck, Josh M. Tome, Deborah A. Nawoczenski Gait...
    Thread by: NewsBot, Nov 8, 2007, 1 replies, in forum: Biomechanics, Sports and Foot orthoses
  12. Mart
    Thread

    Determining STJA using SRF device and plantar force matrix measurement

    I am drafting a proposal to my local university engineering department to co-design and test some instrumentation for kinetic foot measurement....
    Thread by: Mart, Aug 27, 2007, 14 replies, in forum: Biomechanics, Sports and Foot orthoses
  13. cab31
    Thread

    Determination of subtalar joint axis

    Hi i am a podiatry student and am a little bit confused as to how you determine the subtalar joint axis. I have read some of Dr Kevin Kirby's...
    Thread by: cab31, Aug 16, 2007, 1 replies, in forum: Biomechanics, Sports and Foot orthoses
  14. markjohconley
    Thread

    STJ transverse plane axis determination

    Dear reader, i; i suspect i am not alone; despite constant practice, am having practical difficulties with the Kirby test to determine transverse...
    Thread by: markjohconley, Jun 21, 2007, 13 replies, in forum: Biomechanics, Sports and Foot orthoses
  15. markjohconley
    Thread

    Does medially deviated STJ axis mean significant supination resistance

    I thought that the more a STJ axis (transverse plane reflection) is laterally deviated the less the supination resistance perceived at the...
    Thread by: markjohconley, Jun 11, 2007, 6 replies, in forum: Biomechanics, Sports and Foot orthoses
  16. markjohconley
    Thread

    Has the creator got it wrong again? (STJ axis)

    if the stj axis becomes more laterally deviated with increased supinated position of stj with subsequent increased supinatory moments (from...
    Thread by: markjohconley, Sep 9, 2006, 8 replies, in forum: Biomechanics, Sports and Foot orthoses
  17. Phil Wells
    Thread

    Defining Rotational Equilibrium

    This is probably one for Kevin Kirby but I welcome answers from any one. During some research into Rotational Equilibrium, I found the following...
    Thread by: Phil Wells, May 5, 2006, 24 replies, in forum: Biomechanics, Sports and Foot orthoses
  18. Kevin Kirby
    Thread

    Thought Experiment #4: Effect of STJ Axis Location on Sinus Tarsi Compression Forces

    In Thought Experiment #4, the models of the foot have been modified from Thought Experiments #2 and #3 to now include a buttress of bone on the...
    Thread by: Kevin Kirby, Mar 25, 2006, 25 replies, in forum: Biomechanics, Sports and Foot orthoses
  19. Kevin Kirby
    Thread

    Thought Experiment #3: Effect of STJ Axis Location on PT Muscle Tension

    In Thought Experiment #3, the medially deviated STJ axis foot and centrally located STJ axis foot from Thought Experiment #2 are used to...
    Thread by: Kevin Kirby, Mar 19, 2006, 15 replies, in forum: Biomechanics, Sports and Foot orthoses
  20. Kevin Kirby
    Thread

    Thought Experiment #2: Effect of STJ Axis Location on Met Head GRF

    In this second in a series of podiatric biomechanics thought experiments, I have created a model of the foot including the tibia and talus as one...
    Thread by: Kevin Kirby, Mar 13, 2006, 12 replies, in forum: Biomechanics, Sports and Foot orthoses
  21. admin
    Thread

    Variable mechanical effect of anterior tibial muscle contraction

    I am grateful to Kevin Kirby and Precision Intricast for permission to reproduce this April 2001 Newsletter (you can buy the 2 books of...
    Thread by: admin, Feb 25, 2006, 18 replies, in forum: Biomechanics, Sports and Foot orthoses
  22. admin
    Thread

    STJ axis variation makes it into mainstream biomechanics literature

    JOURNAL OF APPLIED BIOMECHANICS, 2005, 21, 85-95 Frontal Plane Moments Do Not Accurately Reflect Ankle Dynamics During Running Kristian M....
    Thread by: admin, Jul 27, 2005, 6 replies, in forum: Biomechanics, Sports and Foot orthoses
  23. kevin miller
    Thread

    Does the STJ have the same action in extreme inversion and pronation?

    Hello all, I was dabbling in the lab today with a cut down foot. All tendons and muscle were removed. Other ligaments remained intact. When...
    Thread by: kevin miller, Dec 1, 2004, 2 replies, in forum: Biomechanics, Sports and Foot orthoses
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