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Related Concept Videos

Bone Disorders01:29

Bone Disorders

3.5K
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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The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

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Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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Aging01:26

Aging

54
Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
54
Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

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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...
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Related Experiment Video

Updated: Jul 7, 2025

A Mouse Model of Orthopedic Surgery to Study Postoperative Cognitive Dysfunction and Tissue Regeneration
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A Mouse Model of Orthopedic Surgery to Study Postoperative Cognitive Dysfunction and Tissue Regeneration

Published on: February 27, 2018

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Surgery and the Aging Orthopaedic Surgeon.

Joseph A Bosco1, Aidan Papalia, Joseph D Zuckerman

  • 1Department of Orthopedic Surgery, NYU Langone Health, New York, NY.

The Journal of Bone and Joint Surgery. American Volume
|December 21, 2023
PubMed
Summary

Aging can affect surgeons

Area of Science:

  • Geriatric Medicine
  • Orthopaedic Surgery
  • Medical Education

Background:

  • Aging is linked to neurocognitive and psychomotor changes.
  • These age-related changes may influence orthopaedic surgeons' technical skills and clinical judgment.
  • No standardized method currently exists for evaluating surgical skills in aging surgeons.

Purpose of the Study:

  • To address the need for assessing age-related changes in orthopaedic surgeons' skills.
  • To explore feasible methods for evaluating surgical competency in aging surgeons.
  • To propose a framework for addressing potential declines in surgical performance due to aging.

Main Methods:

  • Review of current literature on aging, surgical skills, and professional credentialing.
  • Analysis of legal and regulatory considerations impacting mandatory assessments (e.g., Age Discrimination in Employment Act).

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The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
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  • Evaluation of existing institutional credentialing processes as a potential platform for assessment.

    • Main Results:

    • Mandatory, standardized assessment programs are challenging due to legal and ethical considerations.
    • Regularly scheduled credentialing processes offer an established and practical interval for assessment.
    • Institutions and departments must develop tailored approaches for evaluating surgeons with suspected skill deterioration.

    Conclusions:

    • The credentialing process is the most viable mechanism for assessing aging surgeons' skills.
    • A standardized, mandatory assessment is legally difficult to implement.
    • Departments should create individualized plans to address concerns about declining surgical skills in aging surgeons.