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Bone Remodeling and Repair

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...

Fractures: Bone Repair

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 Remodeling

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 Intramembranous Ossification

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.
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Osteoclasts in Bone Remodeling

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 as Supporting Connective Tissue

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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...

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Related Experiment Video

Updated: May 13, 2026

Biological Compatibility Profile on Biomaterials for Bone Regeneration

Published on: November 16, 2018

[Biomaterials in bone repair].

Mervi Puska¹, Allan J Aho, Pekka K Vallittu

¹Turun yliopisto, TCBC.

Duodecim; Laaketieteellinen Aikakauskirja

|March 26, 2013

Summary

This summary is machine-generated.

Biomaterials in bone repair must match defect size, location, and stress. Key properties like porosity and bioactivity ensure durable bone integration, with potential for added active substances in severe cases.

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Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect

Published on: September 11, 2015

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Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect

Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect

Published on: September 11, 2015

Area of Science:

Orthopedic surgery
Traumatology
Craniofacial surgery

Context:

Biomaterials are crucial for bone defect repair, requiring specific properties to meet clinical demands.
Metals, ceramics, and plastics are used based on defect size and application, from endoprostheses to biodegradable screws.
Achieving a durable bond between biomaterial and bone necessitates porosity, bioactivity, and biomechanical similarity.

Purpose:

To outline the essential requirements and applications of biomaterials in orthopedic, traumatological, and craniofacial surgery.
To detail the types of biomaterials used for various bone defect sizes and clinical scenarios.
To emphasize the critical role of biomaterial properties in successful bone regeneration and integration.

Summary:

Biomaterials must align with defect characteristics (shape, size, location) and physiological stresses.
Material selection (metals, ceramics, plastics) depends on defect scale and surgical need.
Porosity, bioactivity, and biomechanical congruence are vital for robust bone-biomaterial interfaces.
Advanced treatments may incorporate biologically active substances for enhanced bone healing.

Impact:

Improved treatment outcomes for bone defects and injuries.
Development of advanced orthopedic implants and regenerative therapies.
Enhanced understanding of biomaterial-bone interactions for future innovations.