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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...
Bone Remodeling01:40

Bone Remodeling

Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
Bone Formation by Endochondral Ossification01:24

Bone Formation by Endochondral Ossification

Bone formation, or ossification, begins around the sixth to seventh week of embryonic development. Most bones develop from a cartilaginous template through the process of endochondral ossification. Cartilage formation begins when clusters of mesenchymal cells differentiate into chondrocytes. These chondrocytes proliferate rapidly and secrete an extracellular matrix that becomes encased in a membrane called the perichondrium. The resulting cartilage model provides a template that resembles the...
Graves Disease II: Pathophysiology01:24

Graves Disease II: Pathophysiology

Graves’ disease is an autoimmune disorder characterized by the production of thyroid-stimulating immunoglobulins (TSI) that activate TSH receptors, leading to excessive synthesis and release of thyroid hormones (T3 and T4) and resulting in hyperthyroidism.Among all causes of hyperthyroidism, Graves’ disease is the most common and can happen at any age, though it is more frequent in women. It produces a hypermetabolic state with features such as weight loss, tachycardia, tremor, and heat...
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 Remodeling and Repair01:31

Bone Remodeling and Repair

Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...

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Related Experiment Video

Updated: Jun 24, 2026

Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification
07:23

Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification

Published on: December 3, 2016

Gorhams disease: vanishing bone syndrome.

R Prasanna1, Janani Sankar, Priya Ramachandran

  • 1Department of Pediatrics, Kanchi Kamakoti CHILDS Trust Hospital, Nungambakkam, Chennai, India. dr_prasannaraju@yahoo.com

Indian Pediatrics
|April 7, 2009
PubMed
Summary
This summary is machine-generated.

Gorham's disease, a rare bone condition, involves bone loss and abnormal blood vessels. Alpha 2b interferon therapy successfully treated an 8-year-old boy with this vanishing bone disease.

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Half-segmental Diaphyseal Bone Defect Model in Rats for Evaluating Bone Substitute Performance in Load-bearing Regions
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Published on: December 30, 2025

Related Experiment Videos

Last Updated: Jun 24, 2026

Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification
07:23

Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification

Published on: December 3, 2016

Half-segmental Diaphyseal Bone Defect Model in Rats for Evaluating Bone Substitute Performance in Load-bearing Regions
04:32

Half-segmental Diaphyseal Bone Defect Model in Rats for Evaluating Bone Substitute Performance in Load-bearing Regions

Published on: December 30, 2025

Area of Science:

  • Orthopedics
  • Vascular Biology
  • Rare Diseases

Background:

  • Gorham's disease, or massive osteolysis, is an exceptionally rare skeletal disorder.
  • It is characterized by abnormal proliferation of vascular tissue (angiomatosis) leading to bone resorption.

Observation:

  • A case study of an 8-year-old boy diagnosed with Gorham's disease is presented.
  • The patient exhibited typical clinical and radiological features of the condition.

Findings:

  • Successful management of Gorham's disease was achieved using alpha 2b interferon therapy.
  • This treatment demonstrated efficacy in a pediatric patient with massive osteolysis.

Implications:

  • Alpha 2b interferon therapy shows promise as a treatment option for Gorham's disease.
  • Further research into interferon-based treatments could improve outcomes for patients with vanishing bone disease.