What is bayonet fracture?

Figure 4: Bayonet apposition refers to a fracture in which the two bone fragments are aligned side-by-side rather than in end-to-end contact.

What is Smith fracture?

A Smith fracture is a break to the end of the radius. The end part of the bone, which forms part of the wrist joint, is displaced or angled in the direction of the palm of the hand. Often, this injury occurs by a fall to the back of a flexed wrist but can occur in any fall to an outstretched hand.

What is fracture in earth science?

A fracture is any separation in a geologic formation, such as a joint or a fault that divides the rock into two or more pieces. Fractures are commonly caused by stress exceeding the rock strength, causing the rock to lose cohesion along its weakest plane.

What is the difference between Colles fracture and Smith fracture?

Smith’s fractures are less common than Colles’ fractures. The distal fracture fragment is displaced volarly (ventrally), as opposed to a Colles’ fracture which the fragment is displaced dorsally….

What is Colle fracture?

A Colles Fracture is a complete fracture of the radius bone of the forearm close to the wrist resulting in an upward (posterior) displacement of the radius and obvious deformity.

What are fractures in the earth called?

Faults are fractures in Earth’s crust where rocks on either side of the crack have slid past each other. Sometimes the cracks are tiny, as thin as hair, with barely noticeable movement between the rock layers.

What is cleavage and fracture?

Cleavage is the property of a mineral that allows it to break smoothly along specific internal planes (called cleavage planes) when the mineral is struck sharply with a hammer. Fracture is the property of a mineral breaking in a more or less random pattern with no smooth planar surfaces.

What is garden spade deformity?

Malunion, with a residual volar displacement of the distal radius results in a cosmetic deformity, referred to as a garden spade deformity. More importantly, it also narrows and distorts the entry to the carpal tunnel and can result in carpal tunnel syndrome 1.

Are bayonets useful?

In addition to potential use in hand-to-hand combat, bayonets are said to be useful for keeping prisoners under control and for “poking an enemy to see whether he is dead.” The Marines aren’t the only branch of the military to equip its soldiers with bayonets.

What is the definition of the bayonet apposition?

bayonet apposition. relationship of two fracture fragments that lie next to each other rather than in end-to-end contact. bay·o·net ap·po·si·tion. Relationship of two fracture fragments that lie next to each other, rather than in end-to-end contact.

Why was the bayonet invented in the 19th century?

The 19th century introduced the concept of the sword bayonet, a long-bladed weapon with a single- or double-edged blade that could also be used as a shortsword. Its initial purpose was to ensure that riflemen could form an infantry square properly to fend off cavalry attacks when in ranks with musketmen, whose weapons were longer.

How did the Japanese use the bayonet in the Second Sino-Japanese War?

However, during the Second Sino-Japanese War, the Japanese were able to effectively use bayonet charges against poorly organized and lightly armed Chinese troops. “Banzai charges” became an accepted military tactic where Japanese forces were able to routinely rout larger Chinese forces.

When did the Germans stop using the sawback bayonet?

The German army discontinued use of the sawback bayonet in 1917 after protests that the serrated blade caused unnecessarily severe wounds when used as a fixed bayonet. The trowel or spade bayonet was another multipurpose design, intended for use both as an offensive weapon as well as a digging tool for excavating entrenchments.