Acromioclavicular ligament
Acromioclavicular ligament
The acromioclavicular ligament is a key ligament in the shoulder region, specifically connecting the acromion of the scapula to the clavicle. This ligament plays a crucial role in maintaining the stability of the acromioclavicular joint, which is essential for the proper functioning of the shoulder.
Anatomy
The acromioclavicular ligament is composed of strong fibrous tissue and is part of the acromioclavicular joint capsule. It is divided into two parts:
- The superior acromioclavicular ligament
- The inferior acromioclavicular ligament
The superior acromioclavicular ligament is stronger and more significant in providing stability to the joint compared to the inferior ligament.
Function
The primary function of the acromioclavicular ligament is to stabilize the acromioclavicular joint by holding the clavicle and acromion together. This stability is crucial for the shoulder's range of motion and its ability to bear weight and perform various activities.
Injuries
Injuries to the acromioclavicular ligament are common, especially in athletes and individuals involved in physical activities. The most common injury is an acromioclavicular joint dislocation, often referred to as a shoulder separation. This injury can range from a mild sprain to a complete tear of the ligament.
Diagnosis and Treatment
Diagnosis of acromioclavicular ligament injuries typically involves a physical examination and imaging studies such as X-ray or MRI. Treatment options vary depending on the severity of the injury and may include:
- Rest and ice
- Physical therapy
- Medications for pain and inflammation
- Surgical intervention in severe cases
Related Structures
The acromioclavicular ligament works in conjunction with other ligaments and structures in the shoulder, including:
See Also
References
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