Generally, an external fixator is mounted quite securely to the bone, and can withstand mild contact, any positioning of the body, and oftentimes even weightbearing immediately after surgery. In fact, it is often more comfortable to pick up the leg by grabbing the fixator, rather than holding the leg itself.he fixator is composed or one or more metal bars and rings, which in turn connect to a child via metal pins and wires. By gradually manipulating the fixator on the outside, we can carefully control the position of the bones and joints on the inside.
Habitat and Distribution. Pin this Image. Green sea urchins used to live in cold waters of the sub Polar Regions. They live in Northern cooler part of the Pacific and Atlantic Ocean. Some also live in the Arctic too. The sea animal can be found in rocky sea beds. They often live in the low depth tidal zones.
Habitat and Distribution Starfish or sea stars are found in most of temperate and tropical oceans of the world.They are exclusively marine and are bottom dwellers. Sea stars are found in a variety of habitats from the intertidal zone down to the bottom of deep seas but they are mainly found in shallow marine environments.They are found in sand, amongst rubble and on coral reefs and rocky bottoms below low tide as well as in estuaries and under the sand on beaches.ea stars are found in a variety of habitats from the intertidal zone down to the bottom of deep seas but they are mainly found in shallow marine environments. They are found in sand, amongst rubble and on coral reefs and rocky bottoms below low tide as well as in estuaries and under the sand on beaches.