dislocation


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dislocation

 [dis″lo-ka´shun]
displacement of a bone from a joint; called also luxation. The most common ones involve a finger, thumb, shoulder, or hip; less common are those of the mandible, elbow, or knee. Symptoms include loss of motion, temporary paralysis of the joint, pain, swelling, and sometimes shock. Dislocations are usually caused by a blow or fall, although unusual physical effort may also cause one. A few dislocations, especially of the hip, are congenital, usually from a faulty construction of the joint, and are best treated in infancy with a cast and possibly surgery.

A dislocation should be treated as a fracture when first aid is administered. First aid includes checking for a pulse distal to the location and keeping the patient as still as possible. The patient is moved as a whole unit on a long board or a stretcher. As soon as possible the dislocation must be reduced by a surgeon.
Shoulder dislocation.
complete dislocation one in which the surfaces are entirely separated.
compound dislocation one in which the joint communicates with the outside air through a wound.
congenital dislocation of the hip a former name for developmental dysplasia of the hip.
pathologic dislocation one due to disease of the joint or to paralysis of the muscles.
simple dislocation one in which there is no communication with the air through a wound.

dis·lo·ca·tion

(dis'lō-kā'shŭn),
Displacement of an organ or any part; specifically a disturbance or disarrangement of the normal relation of the bones at a joint in which there is complete loss of contact between the two articular surfaces. The direction of the dislocation is determined by the position of the distal part of the articulation.
Synonym(s): dislocatio, luxation (1)
[L. dislocatio, fr. dis-, apart, + locatio, a placing]

dislocation

(dĭs′lō-kā′shən)
n.
1. The act or process of dislocating or the state of having been dislocated: "the 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" (Doris Kearns Goodwin).
2. Displacement of a body part, especially the temporary displacement of a bone from its normal position.
3. 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.
4. Geology See displacement.

dislocation

Orthopedics The complete displacement of a joint surfaces. See Acromioclavicular dislocation, Congenital hip dislocation. Cf Subluxation.

dislocation

Separation, especially the disarticulation of the bearing surfaces of a joint with damage to the capsule and to the ligaments that hold the joint together.

Dislocation

Displacement of bones at a joint.
Mentioned in: Wilderness Medicine

dis·lo·ca·tion

(dis'lō-kā'shŭn)
Displacement of an organ or any part; specifically disturbance or disarrangement of normal relation of bones at a joint in which there is complete loss of contact between two articular surfaces.
Synonym(s): luxation (2) .
[L. dislocatio, fr. dis-, apart, + locatio, a placing]

Patient discussion about dislocation

Q. I have dislocated my shoulder for the 3rd time, what I can do in order to avoid surgery? This is an old injury that keeps coming back. I have been dealing with this unstable shoulder for more than 5 years now. In the past few weeks I've visited 3 different doctors, all said that I can't avoid surgery this time or it with keep on dislocating spontaneously. Even though the docs are thinking that it's a lost cause,I got a really good feeling that I will manage to fix my shoulder 100% with no surgery involved. Is there any known therapy I should try before admitting to my surgery?

A. Here (http://orthopedics.about.com/cs/generalshoulder/a/bankart_2.htm and http://orthopedics.about.com/cs/shouldersurgery/a/dislocation_3.htm) you can find a discussion about your dillema - surgery or not

Q. My neighbor's kid had a lens dislocation due to Marfan's disease. Is this a contagious thing? My neighbor's have a sweet 8 year old boy. he had a lens dislocation due to a connective tissue disease named Marfan (I think that the name). It sounds like a very serious condition. My boy is playing with this kid several hour a week. should I take him to the GP to see that his is not infected with this marfan thing?

A. As in love and war so is in medicine the is no always nor never. It is probably the marfan that caused your neighbor kid the lens dislocation but you can never know for sure.
If you want there is nothing wrong in taking your boy for an annual check of an ophthalmologist.

More discussions about dislocation
References in periodicals archive ?
Association of acute dislocationis with pain in the pre auricular region but there is rare association of chronic recurrent dislocation with it.
Management depends upon type of dislocation. Acute dislocation is usually managed by symptomatic pain relief with analgesics and manual reduction.9
Chest pain bounce-back: posterior sternoclavicular dislocation. Ann EmergMed.
Posterior sternoclavicular dislocations (PSCDs) can be difficult to diagnose.
Adult patients (older than 18 y) who presented to the ED of Balikesir-Edremit State Hospital between January 2013 and September 2015 with an anterior shoulder dislocation were identified from ED databases.
l is the length of the dislocation and as before, [LAMBDA] is a cut-off parameter corresponding to the radial extent of the dislocation, limited by the average distance to its nearest neighbours.
in 1960 demonstrated experimentally that the forces responsible for anterior dislocation were a combination of hyperflexion, axial rotation, and compression [33].
Strengthening techniques typically restrict the motion of dislocations. So it was quite a shock when Szlufarska and colleagues discovered that the material samarium cobalt is known as an intermetallic bent easily, even though its dislocations were locked in place.
Discussion with the patient should be aimed at clarifying both the nature of the injury--the mechanism and the need for formal reduction --as well as risk factors for recurrent instability such as age, gender, age at the time of first dislocation, a history of laxity in the shoulder or other joints, and prior orthopedic intervention.
Patients admitted to the emergency room and diagnosed with shoulder dislocation were informed about this study.
We hypothesized that the fixation of osteochondral fracture in adolescent patients with patellar dislocation was not necessary when the fracture did not involve the bearing surface of the knee.
Indoor and outdoor patients presenting with history of or clinical features of patellar dislocation.