How I can find the center of the humeroulnar joint using 3d slicer ?

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Hi, thank you for your answer.

I tried again and you have right, it’s work, thank you very much so I have two methods :

image
image

And this one :

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image592×557 83.2 KB

I don’t know if it’s really a probleme that the sphere don’t fit only the keeled part of the joint. I will try to get the center of that sphere and compare both mesures

Thank you very much again, if anyone know how to create a landmarks at the center of that sphere i’m interested in !

PS: I already looked here : Get best fit sphere of humeral head - #6 by lassoan, But I don’t understand.

Thank you for your help !