I am looking for some info/feedback from labs working with muscle 
bx's.  More specifically comparing open muscle bx's to needle muscle 
bx's.

For those working with needle bx's:
Is this procedure done on both children & adults?
Is it routinely done or only under certain circumstances?
Do you receive adequate amounts of tissue? (for frozen & EM)
Is one bx taken or multiple samples obtained from the same area?
What size needle is most often employed?
Is there a preference in open vs needle bx's or do you find better 
results in one over the other?

Thanks much,

Jean Mitchell, BS, HT (ASCP)
University of Wisconsin Hospital & Clinics
Department of Neurology, Neuromuscular Laboratory
Madison, WI