Abstract
The aims of this study were (1) to analyze whether correlations exist between lumbar spine (LS) bone mineral density (BMD) and the main preoperative biochemical parameters in a large population of patients with primary hyperparathyroidism (HPT); and (2) to evaluate the LS-BMD changes after parathyroidectomy (PTx) at long-term follow-up. Sixty-two patients (median age 57 years, range 23–82 years) with confirmed primary HPT underwent LS osteodensitometry by dual-energy X-ray absorptiometry with BMD measurements at the L2–L4 region before surgery and at 1 year and 2 years after successful PTx. Three groups of patients were considered: Group A (men, n = 14, 22.6%), Group B (premenopausal women, n = 12, 19.3%), and Group C (postmenopausal women, n = 36, 58.1%). There were no linear correlations (P = NS) among the main biochemical parameters, the age of the patients, and their baseline LS-BMD values that were significantly (P < 0.01) lower in Group C patients. At 2-year follow-up the LS-BMD improved by 13.0%, 11.5%, and 11.7% in Groups A, B, and C, respectively (P = NS). In order to compare groups with the same linear relationship between age and LS-BMD, a subgroup of postmenopausal patients aged ≤60 years (Group C2) was considered. ANOVA showed that the improvement of the LS-BMD at l- and 2-year follow-up was higher (P = 0.002) in Group B than in Group C2 patients. The result was confirmed by using the Mann-Whitney U-test (P = 0.0078). Improvement of LS-BMD after successful PTx was significantly (P < 0.01) higher in premenopausal women, suggesting a possible role of estrogen hormone in complete bone remodeling.
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Lumachi, F., Ermani, M., Basso, S. et al. Short- and Long-Term Changes in Bone Mineral Density of the Lumbar Spine After Parathyroidectomy in Patients with Primary Hyperparathyroidism . Calcif Tissue Int 73, 44–48 (2003). https://doi.org/10.1007/s00223-001-1142-7
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DOI: https://doi.org/10.1007/s00223-001-1142-7