Approach to Rickets: Is It Calciopenic or Phosphopenic?

Area of Science:

• Pediatrics
• Endocrinology
• Metabolic Bone Disease

Background:

• Rickets is a childhood disorder characterized by decreased bone mineralization.
• It stems from deficiencies in calcium, phosphate, or vitamin D, affecting bone development.
• Understanding mineral metabolism is crucial for rickets pathophysiology.

Purpose of the Study:

• To provide a comprehensive overview of rickets, including its pathophysiology, classification, diagnosis, and treatment.
• To highlight the different forms of rickets, such as calciopenic, phosphopenic, and vitamin D-dependent.
• To discuss current and emerging therapeutic strategies for managing rickets.

Main Methods:

• Systematic review of literature on rickets pathophysiology and treatment.
• Analysis of diagnostic approaches including history, physical examination, and laboratory evaluation.
• Categorization of rickets based on mineral deficiency and genetic factors.

Main Results:

• Vitamin D deficiency is the most common cause of rickets.
• Vitamin D-dependent rickets is classified by genetic enzyme abnormalities.
• Phosphopenic rickets is categorized as FGF23-related or not.
• Nutritional rickets is treated with vitamin D and calcium supplementation.
• Vitamin D-dependent rickets treatment varies by subgroup.
• Burosumab is a novel treatment for refractory phosphopenic rickets.

Conclusions:

• Effective management of rickets requires a thorough diagnostic evaluation and tailored treatment strategies.
• Vitamin D supplementation is key for nutritional rickets and prophylaxis.
• Genetic and metabolic factors necessitate specific therapeutic approaches for different rickets subtypes.
• Emerging treatments like Burosumab offer new hope for challenging cases of phosphopenic rickets.