Cited by 185Bone fractures and treatmentsBone health and osteoporosis researchBone Metabolism and Diseases

The DOI matches its Crossref record; 249 of the 249 references it cites were found in a registry or an index.

Fracture Healing in the Setting of Endocrine Diseases, Aging, and Cellular Senescence

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Saul, Dominik, Khosla, Sundeep·2022·Endocrine Reviews

Abstract

More than 2.1 million age-related fractures occur in the United States annually, resulting in an immense socioeconomic burden. Importantly, the age-related deterioration of bone structure is associated with impaired bone healing. Fracture healing is a dynamic process which can be divided into four stages. While the initial hematoma generates an inflammatory environment in which mesenchymal stem cells and macrophages orchestrate the framework for repair, angiogenesis and cartilage formation mark the second healing period. In the central region, endochondral ossification favors soft callus development while next to the fractured bony ends, intramembranous ossification directly forms woven bone. The third stage is characterized by removal and calcification of the endochondral cartilage. Finally, the chronic remodeling phase concludes the healing process. Impaired fracture healing due to aging is related to detrimental changes at the cellular level. Macrophages, osteocytes, and chondrocytes express markers of senescence, leading to reduced self-renewal and proliferative capacity. A prolonged phase of “inflammaging” results in an extended remodeling phase, characterized by a senescent microenvironment and deteriorating healing capacity. Although there is evidence that in the setting of injury, at least in some tissues, senescent cells may play a beneficial role in facilitating tissue repair, recent data demonstrate that clearing senescent cells enhances fracture repair. In this review, we summarize the physiological as well as pathological processes during fracture healing in endocrine disease and aging in order to establish a broad understanding of the biomechanical as well as molecular mechanisms involved in bone repair.

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  1. Centers for Disease Control and Prevention., 2020, National Diabetes Statistics Report, 2020.

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Metadata

Authors
Saul, D., & Khosla, S.
Affiliations
Mayo Clinic (US)
Corresponding author
Khosla, Sundeep
Venue
Endocrine Reviews
Published
2022-02-19
Volume
43
Issue
6
Pages
984-1002
ISSN
  • 0163-769X (ISSN-L)
  • 1945-7189
OpenAlex
W4213167559
Cited by
185
References
249
Citations by year
2026: 55 · 2025: 65 · 2024: 47 · 2023: 16 · 2022: 2
FWCI
5.16
Type
journal article
Language
en
Open access
Locations
  • Endocrine Reviews (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (AG062413, AG065868)
  • German Research Foundation (413501650)
  • Deutsche Forschungsgemeinschaft
Topics
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone fractures and treatments
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
Keywords
fracture healing, endocrine disorders, aging, cellular senescence, inflammaging, endochondral ossification, intramembranous ossification, mesenchymal stem cells, macrophages, osteocytes, chondrocytes, senolytics, bone remodeling, hematoma, angiogenesis, chondrogenesis
MeSH terms
Aging, Bony Callus, Endocrine System Diseases, Humans, Osteogenesis, Cellular Senescence, Fracture Healing, Fractures, Bone

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