What Is Pinging, Detonation and Pre-ignition. The terms valve clatter, pinging, pre-ignition and detonation describe the strange rattle or knock coming from an engine. This occurs on acceleration with the engine under a load. Each term describes a slightly different condition, but the result is usually the same with each, engine damage.
The upper arm bone, the humerus, connects the shoulder to the elbow. Humerus fractures are generally divided into three types of injuries based on the location of the fracture. The top of the arm bone is called the proximal humerus, and the bottom of the bone is called the distal humerus.
The humerus is your upper arm bone between your shoulder and elbow. When your humerus is fractured near or at the ball of your shoulder joint, it is commonly known as a broken shoulder. Your humerus can be broken in many places and the fracture is normally described by its location eg a fractured neck of humerus. Please Note: fractured is the medical term for a broken bone. Despite what your friends say, there is no difference in severity between a fractured bone and a broken bone.