any surface of a skeletal formation (bone, cartilage) that makes normal direct contact with another skeletal structure as part of a synovial joint; bony articular surfaces are usually covered with articular cartilage.
What bone features are articular surfaces?
Joint Motion and Shape of Articular Surfaces Articular surfaces of two bones forming a joint are usually concave on one bone and convex on the other bone. Some articular surfaces are flat. Occasionally adjacent bones are convex on both joint surfaces.
What are articular surfaces made of?
Hyaline cartilage forms the articular cartilage, covering the entire articulating surface of each bone. The articular cartilage and the synovial membrane are continuous. A few synovial joints of the body have a fibrocartilage structure located between the articulating bones.
What is articular surface of knee?
Articular Cartilage of the Knee Articular cartilage covers the surfaces of the bones where they meet: at the bottom of the femur, the top of the tibia, and the back of the kneecap. Articular cartilage is an extremely slippery, strong, flexible material.
What is articular surface?
Definition. The surface of a joint at which the ends of the bones meet. Supplement.
What is articular surface anatomy?
Anatomical terminology A joint or articulation (or articular surface) is the connection made between bones in the body which link the skeletal system into a functional whole.
What is the articular surface of femur?
Articular surface Its front part is named the patellar surface and articulates with the patella; it presents a median groove which extends downward to the intercondyloid fossa and two convexities, the lateral of which is broader, more prominent, and extends farther upward than the medial.
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 material covers the articular surface of the distal femur?
Cartilage of the Knee Joint. Articular Cartilage, also called Hyaline Cartilage, covers the joint surfaces where the femur, tibia, and patella articulate with each other.
Can we live without articular cartilage?
If there was no articular cartilage the bone surfaces would rapidly wear away due the friction that occurs when bone rubs against bone. Articular cartilage is self-lubricating because of its high fluid content which gives it the lowest coefficient of friction of any natural or man-made material.
What does articular cartilage look like?
Articular cartilage is the smooth, white tissue that covers the ends of bones where they come together to form joints. Healthy cartilage in our joints makes it easier to move. It allows the bones to glide over each other with very little friction. Articular cartilage can be damaged by injury or normal wear and tear.
How is articular cartilage nourished?
Articular cartilage is an avascular tissue [15] nourished by two potential pathways: diffusion from subchondral bone vessels and diffusion from the synovial fluid.
What does a deformed knee look like?
Deformed Knees The end result is typically a knee that looks smaller or shrunken when it is not swollen. Knee deformities tend to be more noticeable when a patient is standing, and they may cause a person to stand with their knee and lower leg turned outwards or inwards.
What is the function of articular surface?
Articular cartilage is a thin layer of specialized connective tissue with unique viscoelastic properties. Its principal function is to provide a smooth, lubricated surface for low friction articulation and to facilitate the transmission of loads to the underlying subchondral bone.
Can you damage the articular cartilage?
How Is Articular Cartilage Injured? Articular cartilage injuries can occur as a result of either traumatic mechanical destruction, or progressive mechanical degeneration (wear and tear). With mechanical destruction, a direct blow or other trauma can injure the articular cartilage.
What is a articular?
articular. / (ɑːˈtɪkjʊlə) / adjective. of or relating to joints or to the structural components in a joint.
What is an articular process?
The articular processes or zygapophyses (Greek ζυγον = yoke (because it links two vertebrae) + απο = away + φυσις = process) of a vertebra are projections of the vertebra that serve the purpose of fitting with an adjacent vertebra. The actual region of contact is called the articular facet.
What is an articular surface tear?
Purpose: Partial-thickness articular-sided rotator cuff tears have a multifactorial etiology and are associated with degeneration of the tendon. They are often described as an injury of the young athlete, although they are also found in the older population.
What are Tuberosities?
Tuberosity – A moderate prominence where muscles and connective tissues attach. Its function is similar to that of a trochanter. Examples include the tibial tuberosity, deltoid tuberosity, and ischial tuberosity.
What is a articular capsule?
Medical Definition of joint capsule : a ligamentous sac that surrounds the articular cavity of a freely movable joint, is attached to the bones, completely encloses the joint, and is composed of an outer fibrous membrane and an inner synovial membrane. — called also articular capsule, capsular ligament.
What is articular disc?
The articular disk is a thin, oval plate, placed between the condyle of the mandible and the mandibular fossa. … It divides the joint into two cavities, each of which is furnished with a synovial membrane.
What’s the hardest bone in your body?
There are 22 bones in the human skull. The hardest bone in the human body is the jawbone.
Which surface of the femur is convex all throughout?
Anteromedially, the femur is convex with a sagittal radius larger than that posteriorly, while the tibia is flat sloping upwards and forwards. Anterolaterally, both the femoral and tibial surfaces are largely deficient.
What is the hardest bone in your body to break?
femur The thigh bone is called a femur and not only is it the strongest bone in the body, it is also the longest. Because the femur is so strong, it takes a large force to break or fracture it – usually a car accident or a fall from high up.
Which bones have ac shape?
The acromioclavicular, or AC, joint is a joint in the shoulder where two bones meet. One of these bones is the collarbone, or clavicle. The second bone is actually part of the shoulder blade (scapula), which is the big bone behind the shoulder that also forms part of the shoulder joint.
Where is tibiofemoral joint?
Brief Anatomy of the Knee[edit | edit source] The tibiofemoral joint is where the femur meets the tibia. It includes intra-articular structures such as the menisci and cruciate ligaments (ACL and PCL) and extracapsular structure such as the collateral ligaments (MCL and LCL).
Where is the ischium?
hip bone The ischium forms the posteroinferior part of the hip bone. Much like the pubis, it is composed of a body, an inferior ramus and superior ramus. The inferior ischial ramus combines with the inferior pubic ramus forming the ischiopubic ramus, which encloses part of the obturator foramen.
How many articular surfaces are there on the distal epiphysis of tibia?
five surfaces The distal portion of the tibia is shaped like a box. [4] There are five surfaces that make up the distal tibia. The inferior surface provides a smooth articulation with the talus. The anterior surface is covered by extensor tendons and provides an area for ankle joint capsule attachment.
What is the anterior articular surface?
This facet is frequently divided into two by a notch: of the two, the posterior, and larger is termed the middle talar articular surface; it is supported on a projecting process of bone, the sustentaculum tali, and articulates with the middle calcaneal facet on the under surface of the talus; the anterior talar …
What is a cortical irregularity?
Cortical desmoids, also known as cortical avulsive injuries, Bufkin lesion or distal femoral cortical defects/irregularities, are a benign self-limiting entity that are common incidental findings.
Graduated from ENSAT (national agronomic school of Toulouse) in plant sciences in 2018, I pursued a CIFRE doctorate under contract with Sun’Agri and INRAE in Avignon between 2019 and 2022. My thesis aimed to study dynamic agrivoltaic systems, in my case in arboriculture. I love to write and share science related Stuff Here on my Website. I am currently continuing at Sun’Agri as an R&D engineer.