Acetabular labrum Definition
Acetabular labrum refers to a soft-tissue structure that plays an important role in keeping the hip stable. It is highly apparent in the ball-and-socket joints of the hip and the shoulder.
It is known as Labrum acetabuli in Latin and as Bourrelet acétabulaire in French.
Acetabular Labrum Function
It can maintain the function of the hip. This structure assists in deepening the joint socket and increasing the contact area over the opposite surface that looks like a ball.
From the standpoint of normal hip joint biomechanics, it is important for retaining a layer of articular pressurized fluid for the lubrication of joints and for supporting load and its distribution. Its seal about the femoral head contributes to the stability of the hip via its suction force. It is also vital for increasing the area of contact, and reducing the stress of contact. Due to the role that it plays in normal hip joint biomechanics, operative techniques for labral damage management are evolving constantly and the understanding of the function and anatomy is constantly improving.
Acetabular Labrum Tears
Acetabular labral tears refer to tears that include the hip’s acetabular labrum. These are common problems, and can be seen in 55% of intractable hip pain arthroscopies. Surgical intervention aims to restore its function after a tear. Anterior acetabular labral tear is very common, as labral tear is frequent in the anterior- superior area of the joint. Anterior superior acetabular labrum tears are often seen in athletes and elderly people.
Acetabular labral tear symptoms include pain on internal rotation, weight bearing and flexion. Some common problems include giving way of the hip, transient locking, audible painful clicking and micro-instability. Diagnosis can be delayed in some cases, and there can be mismatch between radiographic findings and clinical symptoms. Chronic labral tears can result in premature osteoarthritis.
Acetabular Labral Tear MRI can display advanced cartilage lesions or perilabral cysts. The integrity of the labrum can only be assessed when joint effusions are present. High T2 signal can be read as cystic or mucoid degeneration. Intrasubstance high PD or T1 signal is not regarded as pathologic.
Acetabular labral tear treatment mainly includes surgical options, such as labral repair and Partial labrectomy. Hip arthroscopy is useful for tears in Acetabular labrum. According to initial scientific data, repairs can heal labral tears. Both functional and symptomatic improvement can be expected by patients. However, the long-term results of labral repair can be determined by well-grounded prospective studies.
Acetabular labrum Pictures
Look at the Acetabular labrum images and diagrams to know about the appearance of the structure.
Back to Musculoskeletal System