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相关概念视频

Bone Disorders01:29

Bone Disorders

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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...
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Fractures: Bone Repair01:27

Fractures: Bone Repair

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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...
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Bone Formation by Intramembranous Ossification01:29

Bone Formation by Intramembranous Ossification

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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.
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into ...
5.7K
Gross Anatomy of Bone01:17

Gross Anatomy of Bone

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The two main features of a long bone are the diaphysis and the epiphysis.
The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone. The walls of the diaphysis are composed of dense and hard compact bone made of numerous osteons — the functional unit of the compact bone. The hollow region in the diaphysis is called the medullary cavity, which harbors the bone marrow. In infants and children, this marrow cavity is filled with red marrow, whereas in...
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Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

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The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
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Growth of Cartilage and Bone Tissue01:27

Growth of Cartilage and Bone Tissue

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Chondrocytes form a temporary cartilaginous model by dividing and secreting a thick gel-like extracellular matrix. Once the chondrocytes undergo programmed cell death, osteoblasts enter the site of the cartilaginous model. The process of replacing the temporary cartilaginous model with bone in an ordered manner is called endochondral ossification. In endochondral ossification, not all of the cartilage is replaced by bone tissue. Some cartilage that performs a protective and supportive function...
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骨质发育不完善型V:关于一个临床病例.

María Fernanda Reinoso Gomezcoello1, Isabel Pavón de Paz1, Cristina Navea Aguilera1

  • 1Servicio de Endocrinología y Nutrición, Hospital Universitario de Getafe, Getafe, Madrid, Spain.

Endocrinologia, diabetes y nutricion
|May 16, 2025
PubMed
概括

骨质变生不完美 (OI) 是一种罕见的骨疾病,导致骨脆弱和骨折. 一个新的病例强调IFITM5基因突变是OI型V的原因,具有明显的骨异常.

关键词:
双酸是一种双酸.双酸盐是一种双酸盐.骨矿物质密度 骨矿物质密度矿物质密度 海洋矿物质密度骨发育不良症 骨发育不良症如果IFITM5是IFITM5,那么它是什么?变种的变化 变种的变化突变突变是一种突变.骨质发生不完美症 (osteogenesis imperfecta) 是一个不完美的疾病.骨质发生不完美 (osteogenesis imperfecta) 是一个不完美的过程.骨发育不良症 骨发育不良症

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科学领域:

  • 遗传学 是一个遗传学.
  • 整形外科 整形外科 整形外科
  • 罕见疾病 罕见疾病

背景情况:

  • 骨质变生不完美 (OI) 是一种罕见的遗传性结合组织疾病,其特征是骨脆弱和反复骨折.
  • 常见的OI类型 (I-IV) 涉及COL1A1和COL1A2基因,但不断发现新的遗传原因.
  • 与IFITM5基因突变相关的OI型V具有独特的临床特征.

研究的目的:

  • 介绍一个患有IFITM5基因de novo突变的患者的案例研究.
  • 进一步阐明遗传基础和Osteogenesis Imperfecta型V的临床表现.

主要方法:

  • 基因分析以确定IFITM5基因中的突变.
  • 临床评估患者的骨脆弱性,骨折史和典型的OI型V特征.
  • 对IFITM5突变和Osteogenesis Imperfecta类型V的现有文献的审查.

主要成果:

  • 在患者中发现IFITM5基因的新突变.
  • 该患者表现出OI类型V的标志性特征,包括高性,骨内膜化和高密度甲基细胞带.
  • 这一案例强化了IFITM5在Osteogenesis Imperfecta类型V的病变发生中的作用.

结论:

  • IFITM5基因是Osteogenesis Imperfecta型V的重要原因之一.
  • 对IFITM5突变的基因测试对于诊断OI型V至关重要.
  • 了解这些突变有助于管理和潜在地治疗这种罕见的骨疾病.