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Quick Answer: What are the different types of shoulder dislocations?

There are 3 different types of shoulder dislocation:

  • Anterior (forward). The head of the arm bone (humerus) is moved forward, in front of the socket (glenoid).
  • Posterior (behind). The head of the arm bone is moved behind and above the socket.
  • Inferior (bottom).

How many types of shoulder dislocations are there?

The anterior dislocation is the most frequently encountered shoulder dislocation, comprising approximately 95% to 97% of cases. Posterior dislocations (Figure 2) occur in 2% to 4% of cases, and inferior dislocations (Figure 3) are rare.

What type of shoulder dislocation is most common?

The shoulder joint is the most frequently dislocated joint of the body. Because it moves in several directions, your shoulder can dislocate forward, backward or downward. The most common variety is a forward (anterior) dislocation.

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What are the different types of dislocations?

Common joint dislocations: shoulder, elbow, knee, hip, finger, collarbone, jaw, wrist, ankle and foot

  • Shoulder dislocation.
  • Elbow dislocation.
  • Kneecap (patellar) dislocation.
  • Knee joint dislocation.
  • Hip dislocation.
  • Dislocated finger.
  • Dislocated jaw joint.
  • Wrist dislocation.

How can you tell the difference between anterior and posterior shoulder dislocation?

Shoulder dislocations are usually divided according to the direction in which the humerus exits the joint:

  1. anterior >95% subcoracoid (majority) subglenoid (1/3) subclavicular (rare)
  2. posterior 2-4% 2
  3. inferior (luxatio erecta) <1%

What are the 3 types of shoulder dislocations?

There are 3 different types of shoulder dislocation:

  • Anterior (forward). The head of the arm bone (humerus) is moved forward, in front of the socket (glenoid).
  • Posterior (behind). The head of the arm bone is moved behind and above the socket.
  • Inferior (bottom).

What are the types of dislocation injury?

Shoulder dislocations (along with finger dislocations) are the most common type of dislocations orthopedic specialists treat, however any ball and socket joint can experience dislocation. Other types of dislocations include dislocated knee, hip dislocation and elbow dislocation.

What is the most commonest type of anterior dislocation of the shoulder?

Anterior shoulder dislocation is by far the commonest type of dislocation and usually results from forced abduction, external rotation and extension 1.

Why is anterior dislocation of the shoulder most common?

Anterior Shoulder Dislocation An anterior dislocation accounts for 97% of recurrent or first time dislocations. It is the most common dislocation and is caused by the arm being positioned in an excessive amount of abduction and external rotation.

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Why inferior dislocation of shoulder joint is common?

Rare, but serious, inferior dislocations (luxatio erecta) may be due to axial force applied to an arm raised overhead, such as when a motorcycle collision victim tumbles to the ground. More commonly, the shoulder is dislocated inferiorly by indirect forces hyperabducting the arm.

What is the most common joint dislocation?

The most common joint dislocation is a shoulder dislocation. Treatment for joint dislocation is usually by closed reduction, that is, skilled manipulation to return the bones to their normal position.

What is the difference between a subluxation and a dislocation?

Dislocation is injury to a joint that causes adjoining bones to no longer touch each other. Subluxation is a minor or incomplete dislocation in which the joint surfaces still touch but are not in normal relation to each other.

What is the most common hip dislocation?

Posterior hip dislocations are the most common type and are reduced by placing longitudinal traction with internal rotation on the hip.

How do I know if my shoulder is posterior dislocation?

Radiographic features

  1. absence of external rotation on images in a standard shoulder series is a clue.
  2. lightbulb sign: fixed internal rotation of the humeral head which takes on a rounded appearance.
  3. trough line sign: dense vertical line in the medial humeral head due to impaction of the humeral head.

How can you tell if you have an anterior shoulder dislocation?

The experienced trauma physician can recognise an anterior shoulder dislocation at sight. The arm is usually held in an abducted and externally rotated position. There is loss of the normal contour of the deltoid and the acromion is prominent posteriorly and laterally.

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How can you tell the difference between anterior and posterior hip dislocation?

One helpful clue to differentiate anterior superior hip dislocation from posterior dislocation is the appearance of the lesser trochanter. With posterior hip dislocation, the hip is typically in internal rotation and the lesser trochanter is less conspicuous or completely obscured by the femoral shaft.

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