The invention discloses a bone examination apparatus which includes a shaking module, a multi-mode ultrasonic detecting module, and a processing module. The composite linear array of finger manifold extends along an X-axis, and the finger manifolds extend obliquely to the X-axis. The methods are useful in preventing graft rejection, fetal loss, autoimmune disease, and allergies. A critical total strain is determined for the formation using the first set of characteristics and the relationship. The cutter is then translated from the extended position proximally until the translation of the cutter is stopped at a retracted position proximal to the extended position.