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.
The truth, though, is very different: in fact, the first mammals evolved from therapsids (mammal-like reptiles) at the end of the Triassic period, and coexisted with dinosaurs throughout the Mesozoic Era.idelphodon A Cretaceous ancestor of the modern opossum. Docodon Perhaps not a true mammal, but a mammal-like reptile.. Eomaia This early mammal is known from a single, spectacular fossil. Eozostrodon This Triassic critter may (or may not) have been the first true mammal.