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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

There is a chapter in Valmassy on this. http://www.amazon.com/Clinical-Biome...46895&sr= 8-1

__________________
Science is the antidote to the poison of enthusiasm and superstition

My location

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!!!

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

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.

__________________
Sincerely,

Kevin

**************************************************
Kevin A. Kirby, DPM
Adjunct Associate Professor
Department of Applied Biomechanics
California School of Podiatric Medicine at Samuel Merritt College

e-mail: kevinakirby@comcast.net

Private Practice:
107 Scripps Drive, Suite 200
Sacramento, CA 95825 USA
My location

Voice: (916) 925-8111 Fax: (916) 925-8136
**************************************************

Thats brilliant, thanks for your help!

regards

marc

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?

thanks

1.Sometimes
2.If the shape is right, no
3.Sometimes.
regards Phill

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

__________________
Descartes seems to consider here that beliefs formed by pure reasoning are less doubtful than those formed through perception.

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

Attached Files

Inverted_orthoses_mechanics.pdf (358.7 KB, 37 views)

__________________
Descartes seems to consider here that beliefs formed by pure reasoning are less doubtful than those formed through perception.

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??

__________________
Sincerely,

Kevin

**************************************************
Kevin A. Kirby, DPM
Adjunct Associate Professor
Department of Applied Biomechanics
California School of Podiatric Medicine at Samuel Merritt College

e-mail: kevinakirby@comcast.net

Private Practice:
107 Scripps Drive, Suite 200
Sacramento, CA 95825 USA
My location

Voice: (916) 925-8111 Fax: (916) 925-8136
**************************************************

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.

Attached Files

Inverted Functional Orthosis.Blake.1986.pdf (1.04 MB, 31 views)

__________________
Sincerely,

Kevin

**************************************************
Kevin A. Kirby, DPM
Adjunct Associate Professor
Department of Applied Biomechanics
California School of Podiatric Medicine at Samuel Merritt College

e-mail: kevinakirby@comcast.net

Private Practice:
107 Scripps Drive, Suite 200
Sacramento, CA 95825 USA
My location

Voice: (916) 925-8111 Fax: (916) 925-8136
**************************************************

Prof Kevin

Brilliant

Thanks

__________________
Descartes seems to consider here that beliefs formed by pure reasoning are less doubtful than those formed through perception.

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

Functional Foot Orthoses for Athletic Injuries.Blake.1985.pdf (3.51 MB, 20 views)

__________________
Sincerely,

Kevin

**************************************************
Kevin A. Kirby, DPM
Adjunct Associate Professor
Department of Applied Biomechanics
California School of Podiatric Medicine at Samuel Merritt College

e-mail: kevinakirby@comcast.net

Private Practice:
107 Scripps Drive, Suite 200
Sacramento, CA 95825 USA
My location

Voice: (916) 925-8111 Fax: (916) 925-8136
**************************************************