Does hysterectomy with ovarian conservation affect bone metabolism and density?

Sulin Cheng1, Harri Sievänen, Ari Heinonen

  • 1Department of Health Sciences, University of Jyväskylä, PO Box 35, 40351 Jyväskylä, Finland.

Insights

Hysterectomy with ovarian conservation (HYX) in postmenopausal women was linked to improved bone density and strength. This suggests the uterus may play a previously unrecognized role in bone metabolism regulation.

Area of Science:

  • Endocrinology
  • Orthopedics
  • Gynecology

Background:

  • The impact of hysterectomy with ovarian conservation (HYX) on bone metabolism and density in postmenopausal women is not fully understood.
  • Previous research has not extensively explored the uterus's role in bone health regulation.

Purpose of the Study:

  • To investigate the effects of hysterectomy with ovarian conservation (HYX) on bone metabolism and density in healthy postmenopausal women.
  • To assess potential correlations between HYX and bone turnover biomarkers and bone mineral density (BMD).

Main Methods:

  • Evaluated 176 healthy Caucasian postmenopausal women (aged 48-59) comparing those with and without a history of HYX.
  • Measured bone properties (hip, spine, radius, tibia, calcaneus) using various assessment modalities.
  • Assessed bone turnover via serum biomarkers: bone-specific alkaline phosphatase (BAP), osteocalcin (OC), and tartrate-resistant acid phosphatase (TRAP) 5b.

Main Results:

  • Women with HYX exhibited significantly lower osteocalcin (OC) levels (P=0.017) and marginally lower TRAP 5b (P=0.051).
  • Higher bone mineral density (BMD) was observed in the femoral neck (P=0.037) and lumbar spine (P=0.001) in women with HYX.
  • Increased cortical BMD and bone strength index (I(polar)) of the tibia were noted in women with HYX (P=0.055 to P<0.005).

Conclusions:

  • Hysterectomy with ovarian conservation (HYX) is associated with improved bone mineral density and strength in postmenopausal women.
  • These findings suggest a potential, previously unrecognized role of the uterus in regulating bone metabolism.

Related Concept Videos

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...
Bone Remodeling01:40

Bone Remodeling

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.
Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

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 bone...
Hormones and Bone Tissue01:17

Hormones and Bone Tissue

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...
Oogenesis02:07

Oogenesis

In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
Hormonal Control of the Ovarian Cycle01:30

Hormonal Control of the Ovarian Cycle

The ovarian cycle is meticulously regulated by the hypothalamic-pituitary-gonadal axis. This cycle orchestrates the release of a mature oocyte, essential for reproduction.
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle.  At puberty, GnRH secretion increases in both frequency and...