Cortical Bone
Cortical Bone - Related Videos
08:36
Fragility Assessment of Bovine Cortical Bone Using Scratch Tests
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Cited by 4 •
2017
This study assesses the fracture toughness of bovine cortical bone at the sub-meso levels using microscopic scratch tests. This is an original, objective, rigorous, and reproducible method proposed to probe fracture toughness below the macroscopic scale. Potential applications are studying changes in bone fragility due to diseases like osteoporosis.
08:49
Models of Bone Metastasis
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Cited by 115 •
2012
Animal models are frequently utilized to study cancer metastasis to bone. In this protocol we will describe two common methods of tumor inoculation for bone metastasis studies and briefly describe some of the analyses utilized to monitor and quantify these models.
09:45
In vivo Imaging of Deep Cortical Layers using a Microprism
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Cited by 11 •
2009
Right-angle microprisms inserted into the mouse neocortex allows for deep imaging of multiple cortical layers with a viewpoint typically found in slice. One-millimeter microprisms offer a wide field-of-view (~900 μm) and spatial resolutions sufficient to resolve dendritic spines. We demonstrate layer V neuronal imaging and neocortical vascular imaging using microprisms.
07:17
Murine Hind Limb Long Bone Dissection and Bone Marrow Isolation
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Cited by 293 •
2016
Here we present a protocol for the dissection of hind limb long bones (femurs and tibiae) from the laboratory mouse. We further describe a rapid technique for bone marrow isolation from these bones that utilizes centrifugation for removal of bone marrow from the bone marrow space.
03:56
Bone Marrow Aspiration: A Method to Obtain Bone Marrow to Examine Cell Morphology
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2023
This video describes the technique of aspirating bone marrow from iliac spine and smear preparation for biopsy. In the example, we perform bone marrow aspiration from an acute myeloid leukemia (AML) patient and examine the cells to check for measurable residual disease (MRD), an important prognostic biomarker.
FAQs
An osteon organizes cortical bone around a central canal containing blood vessels and nerves. Concentric layers of mineralized tissue form the surrounding cylinder, while osteocytes occupy lacunae linked by canaliculi. This arrangement places living bone cells within a highly compact matrix and helps explain how the tissue can be maintained despite its dense, tightly organized architecture.
Remodeling coordinates the activities of osteoblasts and osteoclasts as cortical bone responds to changing conditions. This continuing process adjusts the tissue to mechanical loading, repairs microscopic damage, and contributes to mineral storage regulation. Studying remodeling is therefore essential for understanding how cortical bone changes over time rather than functioning as a permanently unchanging structural material.
Lacunae and canaliculi form an interconnected microscopic network associated with osteocytes, the cells that maintain the surrounding matrix. Their organization links cellular maintenance with the mineralized tissue of cortical bone. Examining this network helps biologists interpret how cells are positioned within compact bone and why microscopic architecture matters to the continued stability of the tissue.
A useful investigation can examine two linked levels: the osteon-based organization of the matrix and the turnover process involving osteoblasts and osteoclasts. Considering both connects microscopic architecture with functional change. This approach supports interpretation of how cortical bone contributes to skeletal strength, responds to mechanical loading, repairs microscopic damage, and participates in mineral storage.
Research on cortical bone provides a context for relating organized matrix structure and ongoing turnover to skeletal strength and mineral storage. Investigators can therefore examine osteoporosis alongside changes in tissue maintenance rather than considering bone only as a static material. This perspective connects cellular activity and microscopic organization with broader changes in the skeleton.
These applications draw on different consequences of the same biology. Biomechanics examines how organized matrix contributes to strength and how loading relates to remodeling. Fracture-healing studies consider repair of microscopic damage and continued turnover. Bone-implant integration research applies knowledge of cortical structure and biological maintenance to understand how implants relate to surrounding skeletal tissue.