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AC Joint Disruption

Understanding, Diagnosing, and Treating AC Joint Injuries

What is AC Joint Disruption?

The acromioclavicular (AC) joint is located at the top of the shoulder where the acromion (part of the scapula) meets the clavicle (collarbone). AC joint disruption refers to an injury or separation of these bones, often caused by trauma such as a fall or direct blow to the shoulder. This disruption can range from mild sprains to complete dislocations of the joint, resulting in significant pain, swelling, and impaired shoulder function.

Dr. Abhinav Mishra, an expert in shoulder injuries and surgeries, offers personalized treatment plans for AC joint disruptions, helping patients return to pain-free movement and regain their daily function.

Symptoms of AC Joint Disruption

  • Tenderness
  • Limited Mobility
  • Deformity
  • Swelling and Bruising

Causes of AC Joint Disruption

Direct Trauma to the Shoulder
  • A direct blow to the top of the shoulder, such as during contact sports (e.g., football, rugby, or hockey), is a common cause of AC joint disruption.
  • This force can cause the acromion and clavicle to move out of their normal position, resulting in injury.
Fall on the Shoulder or Outstretched Arm
  • Falling directly onto the shoulder or on an outstretched arm can cause the AC joint to separate.
  • The goal of stThis type of fall is particularly common in activities like biking, skiing, or skateboarding.he surgery is to restore normal shoulder movement, allowing patients to perform daily activities without difficulty.
Sports Injuries
  • Athletes participating in contact or collision sports are at higher risk for AC joint disruptions.
  • A hard hit or fall during play can cause injury to the AC joint.
Trauma from Motor Vehicle Accidents
  • High-energy impacts from car accidents can result in significant injury to the shoulder, including AC joint disruption.

How is AC Joint Disruption Diagnosed?

Physical Examination
  • Your doctor will assess pain, swelling, and deformities in the shoulder area.
  • They will perform special tests to determine the instability or separation of the AC joint.
  • Sling usage for initial support.
X-rays
  • X-rays help confirm the diagnosis by providing a clear image of the AC joint's alignment and identifying any fractures or separations.
  • X-ray imaging can also help determine the severity of the injury (Grade I, II, or III).
MRI or CT Scan
  • In some cases, an MRI or CT scan may be ordered to assess any soft tissue damage, such as ligament tears or muscle injuries, that may be associated with the AC joint disruption.
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