An impediment is anything that slows or blocks progress. It can refer to a physical thing, like a fallen tree in the road, or something more intangible, like how piracy is an impediment to the pleasure cruise industry in Somalia. See the pedi in there?
An oblique fracture is when the break has a curved or sloped pattern. A comminuted fracture is when the bone breaks into several pieces. A buckled fracture, also known as an impacted fracture, is one whose ends are driven into each other. This is commonly seen in arm fractures in children.
Stress corrosion cracking (SCC) is the growth of cracks in a corrosive environment. It can lead to unexpected sudden failure of normally ductile metals subjected to a tensile stress, especially at elevated temperatures.he chemical environment that causes stress corrosion cracking for a given alloy is often one which is otherwise only mildly corrosive to that metal. Hence, metal parts with severe SCC can appear bright and shiny, while being filled with microscopic cracks.