An implantable magnet that can freely turn in response to {TAIL ~ an external magnetic field}, thus avoiding {HEAD ~ torque} and demagnetization on the implantable magnet 
An implantable magnet that can freely turn in response to { TAIL ~ an external magnetic field } , thus avoiding { HEAD ~ torque } and demagnetization on the implantable magnet
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH