
Original
Prevalence and Predictors of Osteoporosis in Advanced Chronic Kidney Disease: A Comparative Analysis of DEXA and Biochemical Markers
*Naher KS,1 Kabir LB,2 Bakht MI,3 Kamal MM4
- *Dr. KUM Shamsun Naher, Consultant, (Sandor Dialysis Service), National Institute of Kidney Diseases & Urology (NIKDU), Dhaka, Bangladesh. shamsunranu@gmail.com. ORCID: https://orcid.org/0009-0001-9192-6380.
- Dr. Lutfa Bintey Kabir, Dialysis Medical Officer, National Institute of Kidney Diseases & Urology (NIKDU), Dhaka, Bangladesh. ORCID: https://orcid.org/0009-0001-2220-8190.
- Dr. Md. Ishtiaque Bakht, Dialysis Medical Officer, Sylhet MAG Osmani Medical College Hospital, Sylhet. ORCID: https://orcid.org/0009-0002-7105-296X.
- Dr. Md. Mostafa Kamal, Registrar, Department of Urology, Dhaka Medical College Hospital, Dhaka. ORCID: https://orcid.org/0009-0009-6295-0769.
*For correspondence
Abstracts
Background:Chronic kidney disease (CKD) is associated with significant disturbances in bone and mineral metabolism, leading to renal osteodystrophy and increased fracture risk. Osteoporosis in advanced CKD remains underdiagnosed, and the utility of biochemical markers as screening tools requires further evaluation.
Objective: To determine the prevalence of osteoporosis using dual-energy X-ray absorptiometry (DEXA) and to identify its predictors, including biochemical markers, in patients with Stage 4 and 5 CKD.
Methods:This cross-sectional observational study was conducted from July 2017 to September 2018 at two tertiary care centers in Bangladesh. A total of 58 diagnosed CKD Stage 4 and 5 patients were enrolled using purposive sampling. All participants underwent clinical evaluation, biochemical testing, and DEXA scanning. Osteoporosis was defined as a T-score ≤ -2.5. Data were analyzed using SPSS version 21.0.
Results:Mean participant age was 46.7±7.7 years (male: female 1:1.1). Osteoporosis prevalence was 51.7% (30/58). Mean T-scores were -2.22±0.62 (lumbar spine), -2.10±0.74 (right femoral neck), and -2.12±0.71 (left femoral neck). Significant differences in calcium (p=0.023), phosphate (p=0.035), and PTH (p=0.004) were observed across BMD categories. Optimal osteoporosis predictors were calcium ≤8.15 mg/dL (sensitivity 67.9%, specificity 50.0%), phosphate ≥4.95 mg/dL (70.0%, 71.4%), and PTH ≥325 pg/mL (70.0%, 67.9%).
Conclusion:Osteoporosis is highly prevalent in advanced CKD, affecting over half of the study population. Biochemical markers, particularly PTH and serum phosphate, demonstrate moderate diagnostic accuracy and may serve as useful adjuncts for osteoporosis risk stratification when DEXA is unavailable.
[Shaheed Syed Nazrul Islam Med Col J 2026, July; 11 (2):161-169]
DOI: https://www.doi.org/10.69699/ssnimcj.2026.11.2.9


