Fibrocartilage

Fibrocartilage
Fibrocartilage
	White fibrocartilage from anintervertebral fibrocartilage.
	Symphysis pubisexposed by acoronal section.(Pubic symphysis visible at center left.)
Identifiers
MeSH	D051445
TA2	1541
TH	H2.00.03.5.00017
FMA	64784
	Anatomical terminology [edit on Wikidata]

Fibrocartilageconsists 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 itselasticityto the latter. It is the only type ofcartilagethat containstype I collagenin addition to the normaltype II.

Structure

Theextracellular matrixof fibrocartilage is mainly made fromtype I collagensecreted bychondroblasts.^[1]

Locations of fibrocartilage in the human body

secondary cartilaginous joints:
- pubic symphysis
- annulus fibrosis ofintervertebral discs
- manubriosternal joint
glenoid labrumof shoulder joint
acetabular labrumof hip joint
medial and lateralmenisciof the knee joint
location wheretendonsandligamentsattach to bone
triangular fibrocartilage complex (UTFCC)

Function

Repair

Ifhyaline cartilageis 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.^[2]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.^[2]

Clinical significance

Micrographshowing a fragment of anintervertebral discdemonstrating degenerative fibrocartilage with loss of nuclei and nests of chondrocytes, as seen indegenerative disc disease.HPS stain.

Degeneration of fibrocartilage is seen indegenerative disc disease.

References

This article incorporates text in thepublic domainfrompage 281of the 20th edition ofGray's Anatomy(1918)

^Maynard, Robert Lewis; Downes, Noel (2019-01-01), Maynard, Robert Lewis; Downes, Noel (eds.),"Chapter 3 - Introduction to the Skeleton: Bone, Cartilage and Joints",Anatomy and Histology of the Laboratory Rat in Toxicology and Biomedical Research,Academic Press, pp.11–22,ISBN 978-0-12-811837-5,retrieved2021-01-04
^^a ^b"Articular cartilage damage".londonkneeclinic.com.Retrieved2024-11-30.

External links

Histology image: 03201loa– Histology Learning System at Boston University

[1] Maynard, Robert Lewis; Downes, Noel (2019-01-01), Maynard, Robert Lewis; Downes, Noel (eds.),"Chapter 3 - Introduction to the Skeleton: Bone, Cartilage and Joints",Anatomy and Histology of the Laboratory Rat in Toxicology and Biomedical Research,Academic Press, pp.11–22,ISBN 978-0-12-811837-5,retrieved2021-01-04

[:0-2] "Articular cartilage damage".londonkneeclinic.com.Retrieved2024-11-30.

[1]

[2]