The full story can be read here: U.S. Combat Injuries Rise Sharply, and I also suggest people take a look at this accompanying graphic. A note on Dan's injuries: the article is incorrect in stating that Dan lost his right hip; the amputation of Dan's right leg occurred at the hip socket in what is referred to medically as a hip disarticulation. The hip itself remains.
Lastly, the hardcopy version of the article also contained these two additional pictures: