17 lines (13 with data), 565 Bytes

#if TMJ_LIGAMENT_REFRENCE_CONFIGURATION_MODEL == 1      
//Connects the Skull with the ground with a fixed connection
AnyStdJoint GroundSkullJnt = {
  AnyRefNode &GroundRef = Main.GlobalRef.GroundNode;
  AnyRefNode &SkullRef = ....HumanModel.Seg.Skull.GroundNode;
  Constraints.Reaction.Type ={Off,Off,Off,Off,Off,Off};
};

//Connects the Skull with the ground with a fixed connection
AnyStdJoint GroundMandibleJnt = {
  AnyRefNode &GroundRef = Main.GlobalRef.GroundNode;
  AnyRefNode &SkullRef = ....HumanModel.Seg.Mandible.GroundNode;
};

#endif