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Bone Disorders

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...

Compact Bone

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...

Classification of Bones

Classification of Bones

The bones of the human skeletal system are of varied shapes, sizes, and functions. They can be classified based on their shape and function into four major classes: long bones, short bones, flat bones, and irregular bones. Some classifications include a fifth type, the sesamoid bones, as a separate class, whereas others categorize them under short bones.
Long and Short Bones
The appendicular skeleton, particularly the upper and lower limbs, is primarily made of long and short bones. The long...

Gross Anatomy of Bone

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The two main features of a long bone are the diaphysis and the epiphysis.
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Bones of the Upper Limb: Humerus

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Related Experiment Video

Updated: Jul 10, 2026

Models of Bone Metastasis

Models of Bone Metastasis

Published on: September 4, 2012

Jaw bone metastases: four cases.

Demetrio Tamiolakis¹, Ioannis Tsamis, Vasilios Thomaidis

¹Department of Cytology, Regional Hospital of Chania, Crete, Greece.

Acta Dermatovenerologica Alpina, Pannonica, Et Adriatica

|November 10, 2007

Summary

Metastatic tumors in the jaws are rare oral malignancies. Early detection and multidisciplinary care are crucial due to their varied presentation, often mimicking other jaw conditions.

More Related Videos

Modeling Primary Bone Tumors and Bone Metastasis with Solid Tumor Graft Implantation into Bone

Modeling Primary Bone Tumors and Bone Metastasis with Solid Tumor Graft Implantation into Bone

Published on: September 9, 2020

Related Experiment Videos

Last Updated: Jul 10, 2026

Models of Bone Metastasis

Models of Bone Metastasis

Published on: September 4, 2012

Modeling Primary Bone Tumors and Bone Metastasis with Solid Tumor Graft Implantation into Bone

Modeling Primary Bone Tumors and Bone Metastasis with Solid Tumor Graft Implantation into Bone

Published on: September 9, 2020

Area of Science:

Oral Oncology
Maxillofacial Surgery
Pathology

Background:

Metastatic tumors to the oral cavity are uncommon, representing about 1% of all oral malignancies.
These secondary tumors can affect both the jaw bones and oral soft tissues.
The mandible is the most frequent site for oral metastases.

Observation:

A retrospective study analyzed four cases of jaw metastases at a Greek university hospital between 1989 and 2005.
The primary tumor sites included the thyroid, esophagus, and liver.
Metastases were found in three mandibles and one maxilla.

Findings:

Oral symptoms associated with these metastases often resemble those of odontogenic infections or benign neoplasms.
This diagnostic challenge underscores the importance of considering metastatic disease in oral presentations.
The study highlights the diverse origins of metastatic tumors to the jaws.

Implications:

A high index of clinical suspicion is essential for prompt diagnosis of oral metastases.
Early and multidisciplinary management is vital for improving patient outcomes.
Recognizing the varied clinical presentation is key to avoiding diagnostic delays.