What Is the Function of Cartilage?

Cartilage is avascular, which means there are no blood vessels supplying it with nutrients. Cartilage is avascular, which means there are no blood vessels supplying it with nutrients.

Cartilage is a firm yet flexible fibrous tissue found at various sites in the body. The most important functions of cartilage include:

  • Cartilage gives shape, support, and structure to other body tissues.
  • It also helps to cushion joints.
  • Cartilage also smoothens the bone surfaces at the joints.
  • It is essential for the development and growth of long bones.

There are three different types of cartilage in the body:

Hyaline cartilage:

  • It contains mostly collagen fibers.
  • It lines the bones in all joints, helping the body to move freely.
  • This type of cartilage is the most common throughout the human body.

Elastic cartilage:

  • It contains elastin fibers, making it more flexible than other types of cartilage.
  • Elastic cartilage balances structure with flexibility, making it the perfect substance to help keep tubular structures open.
  • This type of elastic cartilage is seen in the ears and larynx (voice box).

Fibrocartilage:

  • It contains even more collagen fibers than hyaline cartilage.
  • It is the most rigid type of cartilage and can be found in intervertebral discs (the cushioning structures present between the bones of the spine or vertebrae) in the spine.
  • It is also the strongest type of cartilage.
  • This quality makes it a good connector in high-stress areas of the body, such as between bones, ligaments, and tendons.

Does cartilage heal fast after an injury?

Cartilage is avascular, which means there are no blood vessels supplying it with nutrients. Instead, cartilage receives nutrients when they diffuse through surrounding connective tissue. As cartilage lacks blood vessels, it tends to heal more slowly when injured.

  • Cartilage is the main type of connective tissue seen throughout the body. It serves a variety of structural and functional purposes and exists in different types of joints, bones, spine, lungs, ears, and nose.
  • It consists of cells called chondrocytes that is mixed with collagen and sometimes elastin fibers meshed into a matrix.
  • It is softer and more flexible than bones.
  • Cartilage can be damaged in several ways. An accident can cause direct harm to cartilage in a certain joint. Over time, the wear and tear of everyday life can also damage cartilage.
  • Symptoms can include joint pain, swelling, stiffness, or grinding around the joints and joint locking or giving way.
  • Damage can even be so severe that it causes partial or complete disability.
  • Doctors may assess potential cartilage damage with magnetic resonance imaging (MRI) or arthroscopic surgery.
  • If the cartilage is damaged, it can be treated in multiple ways. Minor damage may be treated with special exercises and over the counter anti-inflammatory drugs. More severe cartilage damage may require surgery.

What is cartilage made of?

Cartilage is a strong and smooth tissue made of “chondrocytes,” or specialized cartilage cells. These cells produce a matrix of collagen, proteoglycans (a special type of protein), and other non-collagenous proteins. These materials help cartilage attract water and give it its shape and specific properties.

If the cartilage begins to degenerate with age or if it were to become damaged from an injury, the joint loses some of that protective cushion and exposes underlying bone ends. This damage can lead to excess stress of those areas of bone that are ill-equipped to handle strong forces.

What is the difference between cartilage and ligaments?

The differences are:

  • A ligament is a band of tissue that connects bones to each other and ensures the joint is stable whereas cartilage is the line of connective tissue that works as a padding between the bones.
  • Cartilage allows the body to move freely by protecting the joints from rubbing against each other. Cartilage is harder and not as flexible as tendons and ligaments but is not as rigid as bone.

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What Is the Function of Cartilage?

What is cartilage?

Cartilage is the fibrous, elastic tissue that cushions joints and provides organ structures.Cartilage is the fibrous, elastic tissue that cushions joints and provides organ structures.

Cartilage is a connective tissue type (one of 6 major types) that is an essential part of many of the structures in the body. Cartilage is stiffer and less flexible than muscle, but not as rigid or hard as bone. Cartilage provides shape to some parts of the body, and acts as cushion between bones in joints.

Cartilage is composed of cells known as chondrocytes which produce specialized proteins that stick together to form a gel-like, cartilaginous matrix. The proteins in the matrix include:

  • Collagens
  • Proteoglycans
  • Non-collagenous proteins

The proteins in the cartilage absorb water which gives cartilage its rubber-like consistency and ability to hold the shape of flexible body structures. Cartilages do not have blood vessels, nerves or lymphatic ducts; instead, nutrients diffuse through the layer of dense connective tissue (perichondrium) surrounding the cartilage.

What are the types of cartilage?

Cartilages have different properties depending on their location in the body, and their function. The three three main types of cartilage are:

  • Hyaline cartilage: Also known as articular cartilage, hyaline cartilage forms a thick layer over bone ends in joints. Hyaline cartilage is also found in the ribs, the septum of the nose which separates the nostrils, and the breathing tube (trachea).
  • Elastic cartilage: Elastic cartilage is principally made up of elastin protein fibers which make it more flexible and is found in the external ears, part of the nose and larynx.
  • Fibrocartilage: Fibrocartilage is a tough, flexible and elastic cartilage that is found in the joints of the knee (meniscus), hip (labrum) and shoulder (labrum), and in between the vertebrae (discs) in the backbone.

What is the function of cartilage?

Cartilage serves various purposes depending on its type and location in the body. Cartilage gives shape to organs like ears and nostrils, keeping them stiff but flexible. Cartilage attaches the ribs to the breast bone (sternum) and provides flexibility to the ribcage to allow expansion of the chest while breathing. Cartilage helps keep the trachea open and flexible.

Cartilage in the weight-bearing joints such as the vertebrae, knees and hips absorb impact from movement, and help disperse the body weight. Cartilage cushions all the joints, allows gliding movement, and reduces friction between bones.

What causes cartilage damage?

Cartilage can be damaged or worn down by:

  • Injury to the joint
  • Degeneration with age (osteoarthritis)
  • Excessive weight
  • Overuse and/or excessive activity
  • Inflammation and infection

If cartilage in a joint gets damaged, the joint can become stiff and painful, with reduced range of motion. Untreated cartilage damage can lead to further degeneration, causing the joint bones to rub against each other. Bone spurs (osteophytes) may also form, adding to the pain in the joint.

Any damage to the cartilage in the trachea can lead to breathing problems. Inflammation of the cartilage in the ribs leads to a painful condition known as costochondritis. Damage to the cartilage in the nose or ears does not have an impact on functional health, but can be a cosmetic issue (for example, cauliflower ear in boxers).




QUESTION

What joints are most often affected by osteoarthritis?
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How do you repair damaged cartilage?

Damaged cartilage has minimal capacity to heal itself or grow back because it does not have blood supply. There are several types of treatments to repair damaged cartilage depending on the extent of damage. Cartilage treatments include the following:

Non-surgical treatments:

  • Making lifestyle changes such as losing excess weight, avoiding activity that can cause further damage and doing appropriate exercises.
  • Physiotherapy and use of supportive aids such as braces.
  • Knee joint injection of hyaluronic acid, a component of synovial fluid, which is the natural lubricant in joints. It can improve joint lubrication and limit further damage to the cartilage.
  • Dietary supplements of compounds such as glucosamine and chondroitin which naturally occur in the body. Supplements are thought to help with limiting cartilage damage and reducing pain, but it is essential to check with the doctor before taking any.

Surgical treatments:

Surgical treatments for damaged or worn out cartilage include:

  • Joint repair
  • Joint fusion
  • Joint replacement

How do you keep cartilage healthy?

It may not be possible to prevent age-related cartilage degeneration, but cartilage health can be preserved to a great extent with appropriate care. Following are some measures that can help:

  • Maintain a healthy weight
  • Eat nutritious food
  • Avoid energy drinks and sodas, drink water instead
  • Avoid smoking
  • Stay active and exercise regularly
  • Strengthen the core muscles and muscles around the joints
  • Warm up before and stretch muscles after workouts
  • Mix up exercise routines to avoid overstressing joints
  • Seek prompt treatment for injuries

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