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Fibrocartilage

Type of tissue

Field	Value
Name	Fibrocartilage
Image	Gray295.png
Caption	White fibrocartilage from an intervertebral fibrocartilage.
Image2	Gray321.png
Caption2	Symphysis pubis exposed by a coronal section. (Pubic symphysis visible at center left.)

Fibrocartilage consists of a mixture of white fibrous tissue and cartilaginous tissue in various proportions. It owes its inflexibility and toughness to the former of these constituents, and its elasticity to the latter. It is the only type of cartilage that contains type I collagen in addition to the normal type II.

Structure

The extracellular matrix of fibrocartilage is mainly made from type I collagen secreted by chondroblasts.

Locations of fibrocartilage in the human body

secondary cartilaginous joints:
- pubic symphysis
- annulus fibrosis of intervertebral discs
- manubriosternal joint
glenoid labrum of shoulder joint
acetabular labrum of hip joint
medial and lateral menisci of the knee joint
location where tendons and ligaments attach to bone
triangular fibrocartilage complex (UTFCC)

Function

Repair

If hyaline cartilage is torn all the way down to the bone, the blood supply from inside the bone is sometimes enough to start some healing inside the lesion. In cases like this, the body will form a scar in the area using a special type of cartilage called fibrocartilage. Fibrocartilage is a tough, dense, and fibrous material that helps fill in the torn part of the cartilage; however, it is not an ideal replacement for the smooth, glassy articular cartilage that normally covers the surface of joints.

Clinical significance

Degeneration of fibrocartilage is seen in degenerative disc disease.

References

Maynard, Robert Lewis. (2019-01-01). "Chapter 3 - Introduction to the Skeleton: Bone, Cartilage and Joints". Academic Press.
"Articular cartilage damage".

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

skeletal-system connective-tissue

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