An arrangement of a flex circuit relay is provided which in a preferred embodiment has a first substrate and a second substrate. The mount includes a through hole, a number of recesses opposing the through hole, and a number of magnetic blocks mounted in the through hole. The quadriceps control device mimics to some degree the quadriceps muscle group in human anatomy, to thereby enhance the ability of a user of a prosthetic or orthotic leg assembly to control knee extension and flexion. Each memory cell is configured to store data by magnetic alignment of the memory cell. The identified ascending aorta object and the identified abdominal aorta object are analyzed to detect an aortic dissection.