Skins come from calves, foals, sheep, goats, and other small animals (young camels and seals). Hides are the skins of cattle, horses, donkeys, camels, deer, elk, walruses, and whales. Pigskin raw materials are the skins of domestic and wild swine. In addition to these most important types of leather raw materials, the skins of reptiles (crocodiles, lizards, and snakes) and fish (wolf-fish, cod, burbot, sheatfish, dog salmon, giant sturgeon, and shark) are also used.
If x-rays are normal, an MRI or bone scan is a more accurate way of diagnosing a stress fracture. The area where stress fractures of the hip occur is called the femoral neck. This is where the hip joint connects to the femur (the thigh bone).
A stress fracture is a small crack in a bone. These fractures are most often a result of overuse and are commonly seen with an increase in activity. Stress fractures occur most commonly in the weight-bearing bones of the legs. When these bones are subjected to a new stress, such as a new exercise routine, they may not be well adapted, and as a result they may crack under the new stresses being applied.