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Blake inverted foot orthoses

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  #1  
Old 28th January 2008, 03:19 AM
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Default Blake inverted foot orthoses

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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

cheers
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  #2  
Old 28th January 2008, 12:02 PM
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Default Re: Casting

Quote:
Originally Posted by bartypb View Post
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

cheers
There is a chapter in Valmassy on this. http://www.amazon.com/Clinical-Biome...46895&sr= 8-1
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Old 28th January 2008, 03:26 PM
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Default 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!!!
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Old 28th January 2008, 07:59 PM
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Default Re: Blake inverted foot orthoses

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
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Old 28th January 2008, 09:13 PM
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Default Re: Blake inverted foot orthoses

Quote:
Originally Posted by bartypb View Post
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

cheers
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.
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Last edited by Kevin Kirby : 29th January 2008 at 09:23 AM.
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Old 29th January 2008, 07:24 AM
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Default Re: Blake inverted foot orthoses

Thats brilliant, thanks for your help!

regards

marc
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Old 3rd September 2009, 11:58 AM
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Default Re: Blake inverted foot orthoses

hello,

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?

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Old 8th September 2009, 11:07 PM
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Default Re: Blake inverted foot orthoses

1.Sometimes
2.If the shape is right, no
3.Sometimes.
regards Phill
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Old 2nd December 2009, 05:16 AM
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Default Re: Blake inverted foot orthoses

Kevin

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
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Old 2nd December 2009, 06:10 AM
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Default Re: Blake inverted foot orthoses

All

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
DORSEY S. WILLIAMS III1, IRENE MCCLAY DAVIS2,3, and STEPHEN P. BAITCH4
ACSM 2003 http://www.udel.edu/PT/davis/​...;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
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File Type: pdf Inverted_orthoses_mechanics.pdf (358.7 KB, 37 views)
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  #11  
Old 2nd December 2009, 07:15 AM
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Default Re: Blake inverted foot orthoses

Quote:
Originally Posted by David Smith View Post
Kevin

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
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??
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Old 6th December 2009, 06:16 PM
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Default Re: Blake inverted foot orthoses

Quote:
Originally Posted by David Smith View Post
Kevin

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
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.
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Old 7th December 2009, 02:10 AM
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Default Re: Blake inverted foot orthoses

Prof Kevin

Brilliant

Thanks
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  #14  
Old 8th December 2009, 10:57 PM
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Default Re: Blake inverted foot orthoses

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).
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