Chordates are animals with backbones. Animal groups in the chordate phylum include fish, amphibians, reptiles, birds and mammals. Animals with backbones are the most highly evolved groups of animals, the most complex and complicated.
Femoral triangle. The femoral triangle (or Scarpa's triangle) is an anatomical region of the upper inner thigh. It is a subfascial space which appears as a triangular depression inferior to the inguinal ligament when the thigh is flexed, abducted and laterally rotated. Contents.
Femoral head fractures. Femoral head fractures are very rare injuries, almost always caused by hip dislocations. The femoral head is fed by three arteries, the main one of which is the medial femoral circumflex. If this is disrupted, there is a high risk of avascular necrosis. The standard classification of femoral head fractures is that of Pipkin.