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Related Concept Videos

Spongy Bone01:09

Spongy Bone

All bones comprise an outer layer of compact bone, and an interior made up of spongy bone tissue, also called cancellous or trabecular bone. In long bones, spongy bone tissue is mainly found in the interior of the epiphyses (broad ends of the bone).
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...
Bone Disorders01:29

Bone Disorders

Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Gross Anatomy of Bone01:17

Gross Anatomy of Bone

The two main features of a long bone are the diaphysis and the epiphysis.
The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone. The walls of the diaphysis are composed of dense and hard compact bone made of numerous osteons — the functional unit of the compact bone. The hollow region in the diaphysis is called the medullary cavity, which harbors the bone marrow. In infants and children, this marrow cavity is filled with red marrow, whereas in adults, it...
Compact Bone01:27

Compact Bone

Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bone's overall function.
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
Bone Formation by Intramembranous Ossification01:29

Bone Formation by Intramembranous Ossification

Intramembranous ossification is one of the two processes involved in the development of bones within an embryo. The flat bones of the face, most of the cranial bones, and the clavicles are formed via this process. During intramembranous ossification, the bones develop directly from sheets of undifferentiated mesenchymal connective tissue.
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into...
Bones of the Upper Limb: Humerus01:19

Bones of the Upper Limb: Humerus

The upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...

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Related Experiment Video

Updated: May 19, 2026

Three-Dimensional Bone Extracellular Matrix Model for Osteosarcoma
08:07

Three-Dimensional Bone Extracellular Matrix Model for Osteosarcoma

Published on: April 12, 2019

Osteosarcoma of jaws.

Mayur Chaudhary1, Shweta Dixit Chaudhary

  • 1Department of Oral and Maxillofacial Pathology and Microbiology, S.M.B.T. Dental College and Hospital, Ghulewadi, Amrutnagar, Post Sangamner, Distt. Ahmednagar, India.

Journal of Oral and Maxillofacial Pathology : JOMFP
|August 28, 2012
PubMed
Summary
This summary is machine-generated.

Osteosarcoma of jaw bones is rare and differs from long bone osteosarcoma. This review details its unique characteristics, causes, and treatments based on 300 cases.

Keywords:
Chondroblastic osteosarcomafibroblastic osteosarcomaosteoblastic osteosarcomaosteosarcoma of jaws

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Oncology
  • Pathology

Background:

  • Jaw bone tumors, including osteosarcoma, are rare neoplasms.
  • Osteosarcoma of the jaw exhibits distinct clinical and pathological features compared to conventional long bone osteosarcoma.

Purpose of the Study:

  • To review the etiology, pathogenesis, features, and treatment modalities of jaw bone osteosarcoma.
  • To consolidate knowledge on this distinct group of rare tumors.

Main Methods:

  • Systematic review of approximately 300 cases of osteosarcoma of varied racial origin.
  • Literature search of PubMed indexed journals from 1967 to 2010.

Main Results:

  • Jaw osteosarcoma presents unique behaviors and pathological characteristics compared to long bone counterparts.
  • Maxillary tumors commonly affect the posterior alveolar process and antrum; mandibular tumors most frequently involve the body, followed by the angle, symphysis, and ascending ramus.

Conclusions:

  • Osteosarcoma of the jaw bones is a distinct entity requiring specific diagnostic and therapeutic considerations.
  • Further research is warranted to fully elucidate the complexities of jaw osteosarcoma.