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Related Concept Videos

Fractures: Bone Repair01:27

Fractures: Bone Repair

Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the procedure...
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 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...
Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

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...
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...
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.

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Related Experiment Video

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Creating Rigidly Stabilized Fractures for Assessing Intramembranous Ossification, Distraction Osteogenesis, or Healing of Critical Sized Defects
07:35

Creating Rigidly Stabilized Fractures for Assessing Intramembranous Ossification, Distraction Osteogenesis, or Healing of Critical Sized Defects

Published on: April 11, 2012

Characterising and treating osteogenesis imperfecta.

Nick Bishop1

  • 1Department of Human Metabolism, University of Sheffield, Sheffield Children's Hospital, Western Bank, UK. n.j.bishop@shef.ac.uk

Early Human Development
|September 18, 2010
PubMed
Summary
This summary is machine-generated.

Osteogenesis imperfecta, a bone fragility disorder, can be managed with bisphosphonates and supportive therapies, significantly reducing fracture frequency. Early intervention shows promise, but long-term effects on structural outcomes require further investigation.

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Laser Capture Microdissection of Mouse Embryonic Cartilage and Bone for Gene Expression Analysis
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Laser Capture Microdissection of Mouse Embryonic Cartilage and Bone for Gene Expression Analysis

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Area of Science:

  • Pediatrics
  • Genetics
  • Orthopedics

Background:

  • Osteogenesis imperfecta (OI) is a genetic disorder characterized by bone fragility, leading to fractures, deformity, pain, and mobility issues.
  • Neonatal presentation with fractures can mimic other conditions, necessitating careful clinical differentiation.
  • Multidisciplinary management is crucial for addressing the complex needs of individuals with OI.

Purpose of the Study:

  • To review the current understanding of osteogenesis imperfecta.
  • To evaluate the efficacy of bisphosphonate therapy in managing OI.
  • To assess the impact of early intervention on fracture frequency and long-term outcomes.

Main Methods:

  • Review of published literature on osteogenesis imperfecta management.
  • Analysis of outcomes associated with bisphosphonate therapy.
  • Evaluation of multidisciplinary care approaches including physiotherapy and occupational therapy.

Main Results:

  • Bisphosphonate therapy, combined with specialized care, can reduce fracture frequency by up to 50%.
  • Early initiation of bisphosphonates (around 6 weeks of age) shows significant positive effects on vertebral morphometry.
  • Outcomes in older children are encouraging, with similar reductions in fracture frequency.

Conclusions:

  • Bisphosphonates are a cornerstone in managing osteogenesis imperfecta, effectively reducing fracture rates.
  • While early intervention demonstrates benefits, its long-term impact on severe structural complications like scoliosis and basilar invagination remains uncertain.
  • Further research is needed to determine the full long-term effects of early therapeutic interventions in OI.