Forearm crutches, also known as Canadian or Lofstrand crutches (Figure 7), are used for patients requiring bilateral upper-extremity support with occasional weight bearing. An advantage of forearm crutches is that they allow the hands to be free without disengaging the crutch from the forearm.
10-animal cloning. Dolly the sheep was the first animal to be cloned from the cell of an adult animal. http://www.ornl.gov/sci/techresources/Human_Genome/elsi/cloning.shtml.
However, it was not until 1959 that indisputable evidence of IVF was obtained by Chang (Chang MC, Fertilization of rabbit ova in vitro. Nature, 1959 8:184 (suul 7) 466) who was the first to achieve births in a mammal (a rabbit) by IVF.