Acetabular labrum: Difference between revisions
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== Acetabular Labrum == | |||
[[File:Gray342.png|thumb|right|Diagram of the hip joint, showing the acetabular labrum.]] | |||
The '''acetabular labrum''' is a ring of cartilage that surrounds the [[acetabulum]] of the [[hip joint]]. It is a fibrocartilaginous structure that plays a crucial role in maintaining the stability and function of the hip joint. | |||
The acetabular labrum is a | |||
== | == Anatomy == | ||
The acetabular labrum is attached to the rim of the acetabulum, which is the cup-shaped socket of the [[pelvis]] that accommodates the head of the [[femur]]. The labrum is triangular in cross-section and is composed of dense fibrous tissue. It extends the depth of the acetabulum, increasing the surface area of the joint and providing a seal that helps to maintain the negative intra-articular pressure within the joint. | |||
== | == Function == | ||
The primary functions of the acetabular labrum include: | |||
* '''Joint Stability''': The labrum deepens the acetabulum, enhancing the stability of the hip joint by providing a larger surface area for the femoral head to articulate with. | |||
* '''Shock Absorption''': It acts as a cushion, absorbing forces transmitted through the hip joint during activities such as walking, running, and jumping. | |||
* '''Joint Lubrication''': The labrum helps to maintain the synovial fluid within the joint, which is essential for lubrication and nutrition of the articular cartilage. | |||
* '''Pressure Distribution''': It aids in the even distribution of pressure across the joint surfaces, reducing wear and tear on the articular cartilage. | |||
== Clinical Significance == | |||
Injuries to the acetabular labrum, such as tears, can lead to hip pain and dysfunction. Labral tears are often associated with [[femoroacetabular impingement]] (FAI), a condition where abnormal contact between the femur and acetabulum leads to damage. Symptoms of a labral tear may include pain in the hip or groin, clicking or locking of the joint, and decreased range of motion. | |||
Diagnosis of labral tears typically involves a combination of physical examination, imaging studies such as [[MRI]], and sometimes diagnostic arthroscopy. Treatment options vary depending on the severity of the tear and may include physical therapy, anti-inflammatory medications, or surgical intervention such as arthroscopic labral repair. | |||
== Related Pages == | |||
* [[Hip joint]] | * [[Hip joint]] | ||
* [[Femoroacetabular impingement]] | * [[Femoroacetabular impingement]] | ||
* [[Cartilage]] | |||
* [[Pelvis]] | |||
[[Category:Anatomy]] | |||
[[Category:Musculoskeletal system]] | |||
[[Category:Anatomy | |||
[[Category: | |||
Latest revision as of 03:50, 13 February 2025
Acetabular Labrum[edit]
The acetabular labrum is a ring of cartilage that surrounds the acetabulum of the hip joint. It is a fibrocartilaginous structure that plays a crucial role in maintaining the stability and function of the hip joint.
Anatomy[edit]
The acetabular labrum is attached to the rim of the acetabulum, which is the cup-shaped socket of the pelvis that accommodates the head of the femur. The labrum is triangular in cross-section and is composed of dense fibrous tissue. It extends the depth of the acetabulum, increasing the surface area of the joint and providing a seal that helps to maintain the negative intra-articular pressure within the joint.
Function[edit]
The primary functions of the acetabular labrum include:
- Joint Stability: The labrum deepens the acetabulum, enhancing the stability of the hip joint by providing a larger surface area for the femoral head to articulate with.
- Shock Absorption: It acts as a cushion, absorbing forces transmitted through the hip joint during activities such as walking, running, and jumping.
- Joint Lubrication: The labrum helps to maintain the synovial fluid within the joint, which is essential for lubrication and nutrition of the articular cartilage.
- Pressure Distribution: It aids in the even distribution of pressure across the joint surfaces, reducing wear and tear on the articular cartilage.
Clinical Significance[edit]
Injuries to the acetabular labrum, such as tears, can lead to hip pain and dysfunction. Labral tears are often associated with femoroacetabular impingement (FAI), a condition where abnormal contact between the femur and acetabulum leads to damage. Symptoms of a labral tear may include pain in the hip or groin, clicking or locking of the joint, and decreased range of motion.
Diagnosis of labral tears typically involves a combination of physical examination, imaging studies such as MRI, and sometimes diagnostic arthroscopy. Treatment options vary depending on the severity of the tear and may include physical therapy, anti-inflammatory medications, or surgical intervention such as arthroscopic labral repair.
