Videos
Quizzes
Both
Acetabular labrum
/images/vimeo_thumbnails/258815537/E8mD57rctYYz6PGOwxjuA_overlay.png)
:watermark(/images/watermark_only_413.png,0,0,0):watermark(/images/logo_url_sm.png,-10,-10,0):format(jpeg)/images/anatomy_term/labrum-acetabulare/ppj9VIRNuQjr4bt6iySeAg_RxCrnsSYkN_labrum_acetabulare_1.png "Acetabular labrum (Labrum acetabuli); Image: Liene Znotina"){kind=logo}
The acetabular labrum is a fibrocartilaginous collar that surrounds the margin of the acetabulum and the outer edge of the transverse acetabular ligament that bridges the acetabular notch. It is derived from the Latin word 'labrum,' meaning 'lip'.
This structure raises the rim of the acetabulum slightly, deepening the socket of the acetabulum and increasing the articular surface area of the acetabulum by about 10%.
Due to the elevated rim and labrum, over half of the femoral head fits within the acetabulum. Thus, the acetabular labrum contributes to the stability of the hip joint by increasing the contact area between the acetabulum and the femoral head. Additionally, the acetabular labrum seals the hip joint and helps maintain optimal distribution of synovial fluid within the joint cavity.
| Terminology |
English: Acetabular labrum Synonym: Glenoid labrum of hip Latin: Labrum acetabuli Synonym: Labrum glenoidale coxae |
| Definition | Fibrocartilaginous rim attached to the acetabular margin |
| Function | Deepens the acetabulum Contributes to the stability of the hip joint articulation Seals the hip joint and maintains synovial fluid within the joint cavity |
Learn more about the acetabular labrum in the following study unit:
:format(jpeg)/images/study_unit/anatomy-hip-joint/QIDFi4AcDDh5LRKoMon86Q_HipJoint_Thumbnail_05.png)
Acetabular labrum: want to learn more about it?
Our engaging videos, interactive quizzes, in-depth articles and HD atlas are here to get you top results faster.
What do you prefer to learn with?
“I would honestly say that Kenhub cut my study time in half.”
–
Read more.
Kim Bengochea, Regis University, Denver
