What is dislocation? (definition)?

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It means that it changes from its regular place. A dislocated shoulder for example is a shoulder that took a knock and that changed its place due to that knock. It takes time to get it back to the right location.

the think which we cant see that is the dis location.

dislocation is a bone that is pulled out of place

check out this definition: http://www.mayoclinic.com/health/disloca...

Definition

In medicine, the terms dislocation and subluxation refer to the displacement of bones that form a joint. These conditions affecting the joint most often result from trauma that causes adjoining bones to no longer align with each other. A partial or incomplete dislocation is called a subluxation.

Description

In a healthy joint, the bones are normally held together with tough, fibrous bands called ligaments. These ligaments are attached to each bone along with a fibrous sac surrounding the joint called the articular capsule or joint capsule. The ligaments and joint capsule are relatively strong and nonelastic but permit movement within normal limits for each particular joint. In the event of a dislocation, one of the bones making up the joint is forced out of its natural alignment from excessive stretching and tearing of the joint ligaments and capsule. Muscles and tendons surrounding the joint are usually stretched and injured to some degree.

dislocation
dis.lo.ca.tion
AHD:[d鹿s鈥漧陆-k鲁鈥渟h鈥]
D.J.[7dislou6kei.*n]
K.K.[7d!slo6ke.*n]
n.
The act or process of dislocating or the state of having been dislocated:
鈥渢he severe emotional dislocation experienced by millions of immigrants . . . who were forced to separate themselves forever from the . . . circle of people and places on which they had depended鈥?Doris Kearns Goodwin)
Displacement of a body part, especially the temporary displacement of a bone from its normal position.
Chemistry An imperfection in the crystal structure of a metal or other solid resulting from an absence of an atom or atoms in one or more layers of a crystal.
Geology See displacement