Does hysterectomy with ovarian conservation affect bone metabolism and density?

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.