my current GF has her mind on PA and surgery..she is a petite gal 5' 100#....for ortho, or others, is there a lot of strength involved on the PA part? what about assisting a much taller surgeon, should she really start strength training her calves if she is going to have to stand on her tip toes for surgeries . or will she just have to find a shorter surgeon to work with? what exactly is the PAs role in the average say TKA or CABG or spinal fusion? also do PAs have a role in pathology or radiology? any info/input is appreciated.