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Blake inverted foot orthoses

Discussion in 'Biomechanics, Sports and Foot orthoses' started by bartypb, Jan 28, 2008.

  1. bartypb

    bartypb Active Member

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    Hi there I am a new user to this great forum and have been reading interesting threads on casting and orthotic manufacture, mainly posting v's skives etc. I was wondering if anyone has any links to papers, or information for the blake inverted procedure? I am sure it is a simple technique and I understand the concept but just don't really know how to use - at the moment I use medial heel skives but don't invert the cast as Kevin Kirby suggests.
    Would appreciate some feedback

  2. Re: Casting

    There is a chapter in Valmassy on this. http://www.amazon.com/Clinical-Biom...bs_sr_1?ie=UTF8&s=books&qid=1201546895&sr=8-1
  3. bartypb

    bartypb Active Member

    Re: Casting

    many thanks Simon I searched the internet and couldn't find anything, I have the valmassey book but didn't think to look there, Doh!!!
  4. pgcarter

    pgcarter Well-Known Member

    I used Blakes original publications going back to 1978? JAPMA I think...I'm sure Craig could tell you off the top of his head...there were two or three that gave me enough to start making them.....one written with a female co-author?.....dredging the bottom of a foggy memory here
  5. Marc:

    Dr. Richard Blake did the CCPM Biomechanics Fellowship a few years before I did the Biomechanics Fellowship. I helped him make his inverted orthoses for him when he was first creating the technique (when I was a 3rd year podiatry student). The chapter in Valmassy's book is an excellent review Dr. Blake's technique. I also discuss the biomechanics of the Blake Inverted Orthosis in the chapter that Don Green and I did in DeValentine's book (Kirby KA, Green DR: Evaluation and Nonoperative Management of Pes Valgus, pp. 295-327, in DeValentine, S.(ed), Foot and Ankle Disorders in Children. Churchill-Livingstone, New York, 1992).

    Here are the other Blake Inverted Orthosis Technique references for your reading pleasure:

    Blake RL, Denton J: Functional foot orthoses for athletic injuries. JAPMA, 75:359, 1985.

    Blake RL, Ferguson H: Foot orthosis for the severe flatfoot in sports. JAPMA, 81:549, 1991.

    Blake RL: Inverted functional orthoses. JAPMA, 76:275-276, 1986.

    Blake RL, Ferguson H: "The inverted orthotic technique: its role in clinical biomechanics.", pp. 465-497, in Valmassy, R.L.(editor), Clinical Biomechanics of the Lower Extremities, Mosby-Year Book, St. Louis, 1996.
    Last edited: Jan 29, 2008
  6. bartypb

    bartypb Active Member

    Thats brilliant, thanks for your help!


  7. Peter1234

    Peter1234 Active Member


    reading Valmassy p 448 it says that a 25 degree inverted orthoses (Blake inverted) is standard practice, and that this orthotic can correct up to 5 degrees of rearfoot valgus-
    1- can anyone tell me if an orthotic such as this is good for a child?
    2 - does the plantar fascia not become irritated as a result of the contoured shape at the medial longitudinal arch; inversion, especially with very active children?
    3 - does the altered coupling of the ankle/subtalar and knee cause any knee pain?

  8. pgcarter

    pgcarter Well-Known Member

    2.If the shape is right, no
    regards Phill
  9. David Smith

    David Smith Well-Known Member


    Could you be so kind as to post a copy of this

    Blake RL: Inverted functional orthoses. JAPMA, 76:275-276, 1986.

    Its not available from JAPMA online

    Cheers Dave
  10. David Smith

    David Smith Well-Known Member


    Here's a great paper that I think backs up the current thinking and research on the action of posted / inverted orthoses.

    Effect of Inverted Orthoses on Lower-Extremity Mechanics in Runners
    ACSM 2003 www.udel.edu/PT/davis/​Inverted_orthoses_​mechanics.pdf

    My summary

    Considering 3 conditions of - no orthoses, standard 4dgs root and blake inverted 15-25dgs. N=11

    Using Vicon motion analysis and Bertec force plate kinetics and kinematics of lower limb and foot where characterised.

    Mean eversion across all subjects show no change However individuals showed wide range of change in eversion RoM

    Mean internal inversion moments very significantly and relatively reduced with greater inversion of orthosis. NB Mean internal eversion moment similarly increased. Mean Knee internal adduction moment reduced and knee internal abduction moment increased.

    Mean Internal rotation of tibia relative to foot increased.

    Concluded that even tho kinematic RoM was not changed the kinetics in terms of internal moments were and this would probably result in reduced stess and injury to tissues. NB There may be increased risk of trauma where the moments are increased.

    Cheers Dave

    Attached Files:

  11. Dave:

    JAPMA online also doesn't allow me access to that paper. I don't think I have it readily available but is rather buried somewhere in my 25+ years of collected papers. Maybe someone else has it??
  12. Dave:

    Just for you.....went out into the garage this afternoon.....unpacked all my old JAPMA journals stacked in boxes at the side of the garage.....found the May 1986 issue.....scanned Blake's article....enjoy.:drinks

    Attached Files:

  13. David Smith

    David Smith Well-Known Member

    Prof Kevin

    Brilliant :D

  14. Dave:

    Here is another one of Rich Blake's early articles on foot orthoses. This was coauthored by Jane Denton, DPM. Jane currently practices in San Francisco with Rich and Ron Valmassy. She also did the Biomechanics Fellowship and was my Biomechanics Fellow during my 3rd year of podiatry school (Blake RL, Denton J: Functional foot orthoses for athletic injuries. JAPMA, 75:359-362,1985).

    Attached Files:

  15. CANDA

    CANDA Welcome New Poster

    Is there any way to access a copy of
    Blake RL, Ferguson H: Foot orthosis for the severe flatfoot in sports. JAPMA, 81:549, 1991.

    It is not on JAPMA

    Thank you
  16. Rich Blake

    Rich Blake Active Member

    I am floundering how to use this forum to give answers about the Inverted Orthotic Technique. I still use the technique, as do thousands that I know. In 30 years I have learned alot about it, from prescribing to manufacturing, but it is hard to know where to start in such a forum as this. Any help you can give me, or any help in answering your questions I am excited about giving. Sincerely, Rich Blake
  17. Jeff Root

    Jeff Root Well-Known Member

    Hi Rich,

    I'm glad to see you on this form. What an asset to other practitioners!

    Best wishes,
  18. Jeff Root

    Jeff Root Well-Known Member

    opps, forum!
  19. Rich:

    I would suggest start commenting on treatment of various conditions when someone asks a question that you feel you want to spend the time answering. You may also post illustrations, photos, and You Tube videos on this forum which can greatly add to the usefulness of the postings. The discussions are quite sophisticated at times so I don't think you will need to "hold back" in your descriptions or in your terminology. If you have any problems with understanding how to navigate or post on Podiatry Arena, please e-mail me privately at kevinakirby@comcast.net.

    Hey....here's a good memory for you....have you ever run more miles in a week than you did in the Border to Border Run??
  20. Peter1234

    Peter1234 Active Member

    trust Kevin to direct this forum :D
  21. Rich Blake

    Rich Blake Active Member

    Being the inventor of the Blake Inverted Technique I would love some questions regarding the techique. In 30 years of use, the technique has been modified, explored, and practiced on tens of thousands of patients. Let me know if you have questions. Dr Rich Blake
  22. efuller

    efuller MVP


    I believe I recall reading in your chapter in Ron's book that chose the arch height in the finished device. I was wondering how you chose the arch height.

    For those who don't know how an inverted cast is made: A platform is built on the positive cast that inverts the heel bisection. If you take a cast and invert it, this will make the medial arch of the device higher. Plaster filler is added to the arch and then shaped like how the arch would have been had the cast not been inverted.

    Thanks in advance,

  23. Rich Blake

    Rich Blake Active Member

  24. Craig Payne

    Craig Payne Moderator

  25. Craig Payne

    Craig Payne Moderator


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