I Mtf rom

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Hello Podostar! I’m writing you because I am "a young"italian pod and as such I had a lot of problems with bio mechanics. -
My problem is how to assess the rom of the MTF.
My tutor at Uni, gave me conflicting informations and I would like to clarify, once and for all, how to perform a measurement that seems so simple but it caused me so much troubles during the thesis.
I was told that to measure the movement of the IMTF, I should put an arm of the goniometer on the first metatarsal and the second on the 1 mtf.
If the 1mtf is "dorsiflexed" compared to the metatarsal, I have to consider this starting position as "zero".
for example:
MTF is dorsiflexed of 10 degrees compared to the metatarsal 1
Maximum dorsiflection : 60
Than I shall subtract 12 to 60 to get the real ROM.
Is that correct?

 

What exactly do you mean by "MTF"?
That is not in common use.

 

Sorry Mr Payne, I'm italian! I metatarsofalangea in modern latin idiom is I metatarsal phalangeal joint.

 

When measuring motion start with the definitions. There is first ray range of motion and there is first metatarsal phalangeal joint motion (1st MPJ). 1st MPJ motion is motion between the proximal phalanx and the metatarsal. A convention is needed to determine where zero is. Most would advocate for the zero position being parallel with the ground when standing. (This could be what is leading to your confusion.) So instead of using the metatarsal as the proximal reference line, you would use the weight bearing surface to represent one line. The other line would be the bisection of the proximal phalanx.

Hope this helps,

Eric