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Ch. 9 Joints
Martini - Fundamentals of Anatomy & Physiology 11th Edition
Martini, Nath, Bartholomew11th EditionFundamentals of Anatomy & PhysiologyISBN: 9780136874089Non è quello che usi tu?Cambia libro di testo
Capitolo 9, Problema 23

Partial or complete dislocation of the acromioclavicular joint is called a(n)___ .

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Understand the anatomy involved: The acromioclavicular (AC) joint is the joint at the top of the shoulder where the acromion of the scapula meets the clavicle.
Recognize the type of injury described: A partial or complete dislocation of this joint involves the displacement of the clavicle relative to the acromion.
Recall the specific medical term used for this injury: It is commonly known as an 'AC joint separation' or 'acromioclavicular separation.'
Differentiate this from other shoulder injuries: Unlike a glenohumeral dislocation, this injury specifically affects the AC joint.
Conclude that the correct term to fill in the blank is 'acromioclavicular separation,' which describes the partial or complete dislocation of the AC joint.

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Acromioclavicular Joint Anatomy

The acromioclavicular (AC) joint is the connection between the acromion of the scapula and the clavicle. It plays a key role in shoulder movement and stability, supported by ligaments such as the acromioclavicular and coracoclavicular ligaments.
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Introduction to Joints

Dislocation Definition

Dislocation refers to the displacement of bones at a joint, where the normal alignment is lost. It can be partial (subluxation) or complete, often causing pain, swelling, and limited movement.
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Synovial Joints

Acromioclavicular Joint Dislocation (Shoulder Separation)

A partial or complete dislocation of the AC joint is commonly known as a shoulder separation. It results from trauma or injury, leading to ligament damage and displacement of the clavicle relative to the acromion.
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Introduction to Joints Example 1