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Related Concept Videos

The Functions of the Skeletal System01:22

The Functions of the Skeletal System

The most apparent functions of the skeletal system are support, protection, and movement. However, bone tissue also performs several other critical metabolic functions. For one, the bone matrix acts as a reservoir for a number of minerals important to the functioning of the body, especially calcium and phosphorus. These minerals, present in the bone tissue, can be released back into the bloodstream when required. Calcium ions, for example, are essential for muscle contractions and controlling...
What is the Skeletal System?01:02

What is the Skeletal System?

Overview
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...
Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

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...
Introduction to the Skeletal System01:20

Introduction to the Skeletal System

The skeletal system is the central framework of the body, consisting of different connective tissues: bones, cartilage, tendons, and ligaments.
Components of the Skeletal System
Bone, or osseous tissue, is a hard connective tissue that forms an internal support structure for the human body. Bones shield vulnerable organs and soft tissue from external forces. For example, the vertebral bones protect and support the spinal cord.
Cartilage, a semi-rigid connective tissue found in regions such as...
Classification of Bones01:18

Classification of Bones

The bones of the human skeletal system are of varied shapes, sizes, and functions. They can be classified based on their shape and function into four major classes: long bones, short bones, flat bones, and irregular bones. Some classifications include a fifth type, the sesamoid bones, as a separate class, whereas others categorize them under short bones.
Long and Short Bones
The appendicular skeleton, particularly the upper and lower limbs, is primarily made of long and short bones. The long...

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Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification
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The skeletal dysplasias.

Deborah Krakow1, David L Rimoin

  • 1Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA. dkrakow@mednet.ucla.edu

Genetics in Medicine : Official Journal of the American College of Medical Genetics
|June 18, 2010
PubMed
Summary
This summary is machine-generated.

Skeletal dysplasias are over 350 genetic disorders causing dwarfism and short stature. Understanding their molecular basis improves diagnosis, genetic counseling, and treatment options for better quality of life.

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Area of Science:

  • Genetics
  • Orthopedics
  • Molecular Biology

Background:

  • Skeletal dysplasias encompass over 350 heterogeneous disorders.
  • These conditions are often linked to orthopedic issues and impact growth, leading to dwarfism or short stature.

Purpose of the Study:

  • To summarize the diagnostic criteria and management of skeletal dysplasias.
  • To highlight the impact of elucidated molecular mechanisms on clinical practice.

Main Methods:

  • Diagnosis relies on integrating radiographic, clinical, and molecular data.
  • Elucidation of molecular mechanisms is key to understanding disease pathology.

Main Results:

  • Molecular mechanisms are understood for many skeletal dysplasias.
  • This knowledge aids in improved clinical diagnosis and informed reproductive choices.

Conclusions:

  • Advances in understanding skeletal dysplasia molecular genetics offer improved diagnostic accuracy.
  • Enhanced treatment strategies can improve lifespan and quality of life for affected individuals.