Osteoporosis treatment in CKD

PODCAST SUMMARY: Managing osteoporosis in chronic kidney disease requires navigating the overlap between osteopenia, osteoporosis, and CKD-metabolic bone disorder. DXA fails to differentiate osteoporosis from renal osteodystrophy sub-types like adynamic bone disease or osteomalacia, necessitating pre-treatment assessment of serum PTH, bone-specific alkaline phosphatase, and 25-hydroxyvitamin D, or bone biopsy when indicated. In advanced CKD (stages 4 to 5D), bisphosphonate clearance is compromised, raising toxicity risks. Denosumab provides potent anti-resorptive action without renal elimination, but carries an extreme risk of severe, life-threatening hypocalcemia due to underlying secondary hyperparathyroidism. Anabolic agents like teriparatide require careful evaluation of baseline bone turnover to avoid exacerbating high-turnover osteitis fibrosa cystica.