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Related Concept Videos

Bone Remodeling01:40

Bone Remodeling

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Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
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Skeleton and Calcium Homeostasis01:21

Skeleton and Calcium Homeostasis

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Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.
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Hormones and Bone Tissue01:17

Hormones and Bone Tissue

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The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
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The Parathyroid Glands00:59

The Parathyroid Glands

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The two pairs of parathyroid glands embedded within the posterior surface of the thyroid gland are restricted by a dense capsule around them. These glands comprise two distinct cell populations—parathyroid oxyphil and parathyroid principal cells- pivotal in calcium homeostasis.
Oxyphil cells, whose functions remain elusive, emerge during late puberty, adding a layer of complexity to the parathyroid gland's intricacies. In contrast, principal parathyroid cells undertake a vital role by...
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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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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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North American Society for Interventional Thyroidology Statement on Directed Ablative Therapy for the Management of Benign Non-functional Thyroid Nodules.

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Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy
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Postparathyroidectomy Bone Density Changes in Patients With Biochemically Mild Primary Hyperparathyroidism.

Firdhous Abdul Kather1, Nazanene H Esfandiari2, Gregory A Clines2

  • 1MDWell.com, Livonia, Michigan.

Endocrine Practice : Official Journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists
|December 20, 2025
PubMed
Summary

Parathyroidectomy improved bone mineral density (BMD) at the femoral neck and total hip in patients with mild primary hyperparathyroidism, especially those with osteoporosis. Personalized management is key for bone health.

Keywords:
bone densityparathyroidectomyprimary hyperparathyroidism

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Two Techniques to Create Hypoparathyroid Mice: Parathyroidectomy Using GFP Glands and Diphtheria-Toxin-Mediated Parathyroid Ablation
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Area of Science:

  • Endocrinology
  • Bone Metabolism
  • Surgical Outcomes

Background:

  • Primary hyperparathyroidism (PHPT) is linked to reduced bone mineral density (BMD).
  • Surgical intervention, parathyroidectomy, is a primary treatment for PHPT.
  • The impact of parathyroidectomy on BMD in mild PHPT requires further elucidation.

Purpose of the Study:

  • To assess changes in BMD after parathyroidectomy in patients with biochemically mild PHPT.
  • To identify skeletal sites and patient subgroups benefiting from BMD improvement post-surgery.

Main Methods:

  • Retrospective review of 93 PHPT patients undergoing parathyroidectomy (2000-2022).
  • Dual-energy X-ray absorptiometry (DXA) scans pre- and post-parathyroidectomy.
  • Statistical analysis using ANOVA; significance defined as P < 0.05.

Main Results:

  • No significant BMD differences based on age, DXA timing, gland characteristics, or preoperative vitamin D/calcium levels.
  • Significant postoperative BMD improvement at the femoral neck in osteoporotic patients versus osteopenic/normal bone density groups.
  • Overall osteoporosis status showed significant BMD gains at the femoral neck and total hip compared to osteopenia.

Conclusions:

  • Parathyroidectomy can lead to significant BMD improvements at specific skeletal sites in mild PHPT.
  • Femoral neck and total hip BMD show notable gains, particularly in patients with osteoporosis.
  • Tailored interventions and personalized approaches are crucial for optimizing bone health outcomes in PHPT management.