Cartilaginous bone extremities of growing monotremes appear unique.

@article{Thorp1991CartilaginousBE,
  title={Cartilaginous bone extremities of growing monotremes appear unique.},
  author={Barry Thorp and J. M. Dixon},
  journal={The Anatomical record},
  year={1991},
  volume={229 4},
  pages={447-52}
}
Cartilage canals are present in the epiphyseal cartilage of most mammals and birds. They are considered necessary for the maintenance of chondrocytes and for the formation of epiphyseal ossification centers. The epiphyseal cartilage of marsupials was recently shown not to contain cartilage canals, and placental rats appear not to have cartilage canals, although some confusion exists in the literature. The present study examines the cartilaginous epiphyses and physes from the knee and hip of the… CONTINUE READING