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Clavicular hook plate for acute acromioclavicular dilocation

Clavicular hook plate for acute acromioclavicular dilocation


AC joint dislocation is a common orthopedic injury that affects the acromioclavicular joint, causing pain, limited range of motion, and functional impairment. Over the years, orthopedic surgeons have employed various surgical techniques to restore stability and promote efficient healing of the joint. One such innovative approach gaining popularity is the utilization of the clavicular hook plate. In this article, we delve into the effectiveness, benefits, and considerations of using a clavicular hook plate in the treatment of AC joint dislocation.

Understanding AC Joint Dislocation

The acromioclavicular joint is crucial for proper shoulder function, connecting the clavicle (collarbone) and the acromion process of the scapula (shoulder blade). When the joint is subjected to significant trauma, such as a fall or a direct blow to the shoulder, it can lead to an AC joint dislocation. The severity of the dislocation is classified into different grades, ranging from I to VI, with Grade III being the most common.

Traditional Treatment Approaches

Non-surgical management, including rest, physical therapy, and pain medication, is often recommended for lower-grade AC joint dislocations. However, higher-grade dislocations and those associated with significant pain, deformity, or functional impairment usually require surgical intervention.

Various surgical techniques have been employed, including Kirschner wire fixation, tension band wiring, coracoclavicular (CC) screw fixation, and the Weaver-Dunn procedure. While these approaches have shown good clinical outcomes, they do possess limitations, such as hardware migration, implant breakage, and insufficient stabilization of the AC joint.

The Clavicular Hook Plate Advantage

The clavicular hook plate is a relatively new implant that has gained attention for its ability to offer stable fixation and promote early rehabilitation following AC joint dislocation. The plate is made of stainless steel or titanium and is contoured to match the anatomy of the clavicle. Its unique design includes a hooked end that wraps around the clavicle, providing superior fixation and preventing displacement of the bone.

Advantages of using the clavicular hook plate in AC joint dislocation treatment include:

  1. Enhanced Stability: The hook plate provides reliable fixation, maintaining proper alignment of the AC joint throughout the healing process. This stability allows for improved patient comfort and early mobilization.

  2. Anatomical Restoration: The plate's contouring ensures anatomic reduction of the joint, aiding in the restoration of joint congruity and minimizing postoperative complications.

  3. Flexibility: The clavicular hook plate is available in various sizes, allowing surgeons to select the appropriate plate length and curvature for each patient. This adaptability improves the overall surgical outcome.

  4. Reduced Hardware-related Complications: The hook plate design minimizes the risk of hardware migration and breakage, as the hook securely grasps the clavicle. This reduces the need for secondary surgeries and ensures long-term stability.

Considerations and Future Directions

While the clavicular hook plate has shown promising results in the treatment of AC joint dislocation, it is essential to consider certain factors before its implementation. Surgeons must carefully evaluate patient-specific factors, such as age, activity level, and overall shoulder health, to determine the most appropriate surgical approach.

As with any surgical intervention, potential complications exist, including infection, pain, nerve injury, and implant-related issues. Long-term studies are still needed to evaluate the durability of clavicular hook plates and their impact on long-term joint function.