Related Experiment Videos
Histological osteomalacia due to dietary calcium deficiency in children
Insights
Dietary calcium deficiency in children can cause severe osteomalacia, a condition characterized by poor bone mineralization. Supplementation rapidly improved bone health, demonstrating calcium
Area of Science:
- Pediatric Endocrinology
- Bone Biology
- Nutritional Science
Background:
- Rickets is a condition in children characterized by impaired bone mineralization.
- Dietary calcium deficiency is a potential cause of rickets and osteomalacia.
- Histomorphometric analysis provides detailed insights into bone remodeling processes.
Observation:
- Three children with clinical, radiological, and biochemical signs of rickets due to calcium deficiency were studied.
- Histomorphometry revealed severe osteomalacia, characterized by hyperosteoidosis and reduced bone formation and mineralization.
- Increased bone resorption was also observed in the affected children.
Findings:
- Low calcium intake in children is associated with a histological picture of severe osteomalacia.
- Correction of dietary calcium intake normalized serum and urinary calcium levels and reduced alkaline phosphatase.
- Calcium therapy led to normalization of calcified bone volume and bone mineralization indicators.
Implications:
- Dietary calcium deficiency is a direct cause of osteomalacia in children.
- Adequate calcium intake is crucial for proper bone development and mineralization in pediatric populations.
- This study highlights the importance of nutritional assessment in children presenting with rickets.
Abstract:
We performed a histomorphometric study of trabecular-bone formation and resorption in undecalcified sections of iliac crest from three children presenting with clinical, radiologic, and biochemical evidence of rickets associated with dietary calcium deficiency. All three children had severe osteomalacia documented by hyperosteoidosis and reduced static and dynamic indicators of bone mineralization. There was a reduction of the calcified bone volume associated with a decreased bone formation rate and features of increased bone resorption. Correction of dietary calcium intake in two of the patients led to normal serum and urinary calcium levels and reduced alkaline phosphatase levels. After calcium therapy, the calcified bone volume was normal and indicators of bone mineralization returned to normal. We conclude that low calcium intake in children may be associated with a histologic picture of severe osteomalacia. Our finding that adequate amounts of calcium rapidly improved bone mineralization demonstrates that calcium deficiency can cause osteomalacia in children.