Fibrocartilage

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

[1] 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.

[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.

This article incorporates text in the public domain from page 281 of the 20th edition of Gray's Anatomy (1918)

Micrograph showing a fragment of an intervertebral disc demonstrating degenerative fibrocartilage with loss of nuclei and nests of chondrocytes, as seen in degenerative disc disease . HPS stain .