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Related Concept Videos

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...
Tumor Progression02:07

Tumor Progression

Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Bone Cells and Tissue01:30

Bone Cells and Tissue

Bones contain a relatively small number of cells entrenched in a matrix of organic and inorganic components. Although bone cells compose only a small amount of the bone volume, they are crucial to its function. Four types of cells are found within the bone tissue— osteoblasts, osteocytes, osteogenic cells, and osteoclasts.
Osteoblasts and Osteocytes
The osteoblast is the bone cell responsible for forming new bone tissue. It is found in the growing portions of bone, including the periosteum and...
Classification of Bones01:18

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...
Bone as Supporting Connective Tissue01:23

Bone as Supporting Connective Tissue

Bone tissue forms the internal skeleton of vertebrate animals, providing structure to the body.
Bone Matrix
Bone, or osseous tissue, is a connective tissue that has a large amount of two different types of matrix material. The organic matrix is similar to the matrix material found in other connective tissues, including some amount of collagen and elastic fibers. This gives strength and flexibility to the tissue. The inorganic matrix consists of mineral salts— mostly calcium salts— that give the...
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...

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Related Experiment Video

Updated: May 27, 2026

Modeling Primary Bone Tumors and Bone Metastasis with Solid Tumor Graft Implantation into Bone
06:53

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

Published on: September 9, 2020

[Primary malignant bone tumors].

R von Eisenhart-Rothe1, A Toepfer, M Salzmann

  • 1Klinik für Orthopädie und Sportorthopädie, Klinikum rechts der Isar, Technische Universität München, Ismaninger Straße 22, 81675, München, Deutschland. r.eisenhart-rothe@ortho.med.tu-muenchen.de

Der Orthopade
|December 2, 2011
PubMed
Summary
This summary is machine-generated.

Primary malignant bone tumors are rare, with osteosarcoma, chondrosarcoma, and Ewing's sarcoma being the most common types. Diagnosis and staging are crucial for interdisciplinary treatment planning and surgical reconstruction.

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Generation and Expansion of Primary, Malignant Pleural Mesothelioma Tumor Lines
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Generation and Expansion of Primary, Malignant Pleural Mesothelioma Tumor Lines

Published on: April 21, 2022

Related Experiment Videos

Last Updated: May 27, 2026

Modeling Primary Bone Tumors and Bone Metastasis with Solid Tumor Graft Implantation into Bone
06:53

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

Published on: September 9, 2020

Generation and Expansion of Primary, Malignant Pleural Mesothelioma Tumor Lines
08:01

Generation and Expansion of Primary, Malignant Pleural Mesothelioma Tumor Lines

Published on: April 21, 2022

Area of Science:

  • Oncology
  • Orthopedics

Context:

  • Primary malignant bone tumors are rare neoplasms with an incidence of approximately 10 cases per million people annually.
  • These tumors represent 6% of all childhood malignancies and peak in incidence between ages 15 and 19.
  • Osteosarcoma, chondrosarcoma, and Ewing's sarcoma are the most prevalent types, accounting for a significant majority of cases.

Purpose:

  • To outline the epidemiology, common types, and diagnostic procedures for primary malignant bone tumors.
  • To emphasize the importance of accurate staging and interdisciplinary tumor board consultation for treatment planning.
  • To highlight standard surgical interventions and the necessity of long-term follow-up care.

Summary:

  • Malignant bone tumors are uncommon, with specific age peaks and common histological types like osteosarcoma.
  • Accurate diagnosis through imaging and biopsy is essential for staging and guiding treatment decisions.
  • Treatment typically involves wide tumor resection with endoprosthetic or biological reconstruction, followed by continuous patient after-care.

Impact:

  • Establishes the rarity and epidemiological characteristics of primary malignant bone tumors.
  • Underscores the critical role of accurate staging and multidisciplinary collaboration in patient management.
  • Defines the standard surgical approaches and the importance of long-term surveillance in specialized centers.