12 lines (8 with data), 334 Bytes

Trunk = {
  //Including all muscle parameters here, in this case we only needed the Psoas muscles,
  //but here all are included to avoid splitting files
  #include "../../Trunk/MuscleParametersSpineSimpleLeft.any"
  
  MusclesSpineLeft = {
    #include "../../Trunk/PsoasMajorLeft.any"
  }; // End of MuscleSpineLeft
};