Max bending forces of hallux

[Marmei]

Dear all,

I am looking for maximal bending forces of the hallux.

During my physics undergrad studies we had to calculate if a stiletto could break a big toe when a lady wearing such shoes steps accidentally on someone's toe. I would like to use this example, but would require correct max bending force data of the hallux…. So far, I was not able to find any numbers. Many thanks for your help!

Best wishes,
Margrit Meier

[furmato58]

Magrit,
Are you asking about bending of the hallux at the interphalngeal joint or are you interested in mechanical properties of proximal or distal phalanx?
Jim

[Marmei]

Jim,
It would be the mechanical bending properties, i.e. bending normally to the longitudinal axis, of the distal phalanges of the big toe (hallux). I have added a quick drawing (not to scale) in order to illustrate what I mean. Hope it helps! Thanks in advance for your help!
Margrit