Subtraction of bone from soft tissue from same model

I am trying to create 2 models to 3D print of a diabetic foot with a plantar foot ulcer. I want to print a 3d model of the foot skeleton that can sit in the soft tissue envelope with the ulcer.

I am trying to figure out the best way to subtract the foot bone from plantar foot soft tissue to create both models to 3d print. I am trying to use the logical operators function in segment editor but cannot get both the bone and soft tissue models to come up at the same time.

Any help appreciated.

Collin