Endochondral Ossification
Definition
The process by which bone replaces a cartilage precursor. All long bones, the vertebrae, the ribs, and the cranial base form by this route. The cartilage model is progressively vascularised and replaced by mineralised trabecular bone, with the periosteal collar forming the cortex.
Related terms
- Appendicular Skeleton
- The 126-bone system of the human limbs and their girdles: the pectoral girdle (4), upper limbs (60), pelvic girdle (2 os coxae),...
- Axial Skeleton
- The 80-bone central structural column of the human skeleton: the skull (29 bones), the vertebral column (26 bones including sacrum and coccyx),...
- Epiphyseal Fusion
- The obliteration of the cartilaginous growth plate and bony union of the epiphysis with the diaphysis. Fusion sequence and timing form the...
- Intramembranous Ossification
- The process by which bone forms directly from a mesenchymal membrane without a cartilage intermediate. Produces the flat bones of the skull...
- Medial Clavicle Epiphysis
- The last secondary ossification centre to fuse in the human skeleton, completing at 21 to 30 years depending on sex and population....
- Mukherjee 1955 Dataset
- Sub-adult skeletal age reference data published by P. K. Mukherjee and colleagues from AIIMS New Delhi, demonstrating that several epiphyses fuse 1...
- Primary Ossification Centre
- The initial site of bone tissue formation in a developing skeletal element. In long bones, the primary centre forms the diaphysis (shaft)...
- Scheuer-Black Framework
- The reference system for developmental skeletal age estimation published by Louise Scheuer and Sue Black in 'Developmental Juvenile Osteology' (Academic Press, 2000)....
- Secondary Ossification Centre
- An epiphysis: a discrete bony island that forms postnatally at the articular end of a long bone, separated from the diaphysis by...
Explained in
- The Human Skeleton: Axial, Appendicular and the Ossification TimelineThe process by which bone replaces a cartilage precursor. All long bones, the vertebrae, the ribs, and the cranial base form by this route. The cartilage model...