The lunate is the articular surface of the acetabulum to the femoral head. The rough depression in the floor of the acetabulum is the acetabular fossa, which is continuous with the acetabular notch.
What are the articular surfaces of the hip joint?
The labrum has three surfaces: Internal articular surface – adjacent to the joint (avascular) External articular surface – contacting the joint capsule (vascular) Basal surface – attached to the acetabular bone and ligaments.
What is the acetabular surface?
The acetabulum /æsəˈtæbjʊləm/ (cotyloid cavity) is a concave surface of the pelvis. The head of the femur meets with the pelvis at the acetabulum, forming the hip joint.
Does the hip joint have articular cartilage?
Hip articular cartilage Both the femoral head and the acetabulum are lined with articular cartilage. Articular cartilage is an extremely slippery, strong, flexible material that covers a bone at the site of the joint.
Which part of acetabulum is not covered with articular cartilage?
acetabular fossa
The acetabular fossa is a depression deep within the floor of the acetabulum; normally, the fossa does not contact the femoral head and therefore is not lined with articular cartilage.
What is the Zona orbicularis?
The zona orbicularis is a ligament located on the neck of the femur, or thigh bone. It is an annular ligament, which means it encircles the neck of the femur. This ligament is alternatively known as the zonular band, ring ligament, and orbicular zone.
Which aspect of the acetabulum is not an articulating surface?
The head of the femur is mostly covered by articular cartilage (hyaline). The head has a pit (fovea) which is non-articular and receives the attachment of the ligament of the head of femur which extends to it from the transverse acetabular ligament.
Where is the acetabular labrum?
The ball and socket are each covered with smooth articular cartilage. The labrum is an additional, specialized piece of cartilage that runs along the rim of the socket to provide a suction seal and stability to the hip joint, absorbing shock and distributing pressure during hip motion.
Is the acetabulum an articular surface?
The acetabulum has a ‘C’-shaped articular surface (Fig. 6.50), the lunate surface, which is lined by hyaline cartilage. The deeper part of the acetabulum is non-articular and is occupied by the Haversian pad of fat. The head of the femur is mostly covered by articular cartilage (hyaline).
What is acetabular cartilage?
This tough, crescent-shaped cartilage structure lines the rim of the hip socket (called the acetabulum), which is located in the pelvic bone. Also known as the acetabular labrum, this should not be confused with the labrum of the shoulder, which is a similar structure called the glenoid labrum.
What is articular cartilage of the hip?
Articular cartilage is a layer of material in the hip joint that covers the surface of the femoral head and acetabulum, cushioning them and allowing them to move against each other without causing damage.
Is the acetabular ligament articular or nonarticular?
The rim of the acetabulum is lined with a fibrocartilagenous acetabular labrum, part of which bridges across the acetabular notch as the transverse acetabular ligament. The deeper part of the acetabulum is non-articular and is occupied by the Haversian pad of fat. The head of the femur is mostly covered by articular cartilage (hyaline).
What is an acetabular notch in anatomy?
Anatomical terms of bone. [edit on Wikidata] The acetabular notch is a deep notch in the acetabulum of the hip bone. The acetabular notch is continuous with a circular non-articular depression, the acetabular fossa, at the bottom of the cavity: this depression is perforated by numerous apertures, and lodges a mass of fat.
Is the acetabular fossa lined with articular cartilage?
Heavily lined with articular cartilage, it is the only part of the acetabulum that normally contacts the femoral head. The acetabular fossa is a depression deep within the floor of the acetabulum; normally, the fossa does not contact the femoral head and therefore is not lined with articular cartilage.
What is articular cartilage?
Articular cartilage is the tough, fibrous substance covering the surface of the bones within a joint. Often compared to the substance at the end of a chicken bone, this slippery matter is what allows for smooth motion between the ends of bones in a joint.
