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Slipped epiphyses in renal osteodystrophy.

O Mehls, E Ritz, B Krempien

    Archives of Disease in Childhood
    |July 1, 1975
    PubMed
    Summary
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    Slipped epiphyses in children with renal osteodystrophy are linked to advanced bone disease. Treatment with vitamin D was effective in most cases, with surgery rarely needed.

    Area of Science:

    • Pediatric Endocrinology
    • Nephrology
    • Skeletal Dysplasias

    Background:

    • Renal osteodystrophy is a common complication in children with chronic kidney disease.
    • Slipped epiphyses (epiphysiolysis) can occur in children with renal osteodystrophy, but the underlying mechanisms are not fully understood.
    • Understanding the relationship between renal osteodystrophy and slipped epiphyses is crucial for effective management.

    Purpose of the Study:

    • To analyze the clinical, biochemical, roentgenological, and histological features of slipped epiphyses in children with renal osteodystrophy.
    • To investigate the correlation between serum parathyroid hormone levels, bone histology, and the presence of epiphysiolysis.
    • To elucidate the histological nature of the radiolucent zone observed in X-rays of affected children.

    Main Methods:

    Related Experiment Videos

    • Retrospective analysis of clinical data, biochemical markers (serum parathyroid hormone), and radiological findings in 112 children with renal osteodystrophy.
    • Quantitative histological assessment of iliac bone biopsies.
    • Comparison of patients with and without slipped epiphyses.

    Main Results:

    • Slipped epiphyses were identified in 11 out of 112 children with renal osteodystrophy.
    • Children with epiphysiolysis showed more advanced osteitis fibrosa, characterized by increased osteoclastic resorption, endosteal fibrosis, and osteoid, correlating with higher serum parathyroid hormone levels.
    • Histological examination revealed that the radiolucent epiphyseal-metaphyseal zone was due to woven bone and/or fibrous tissue, not cartilage accumulation.

    Conclusions:

    • Slipped epiphyses in children with renal osteodystrophy are associated with significant secondary hyperparathyroidism and advanced osteitis fibrosa.
    • Vitamin D therapy demonstrated good efficacy in most cases, with parathyroidectomy being necessary only in a single instance.
    • The findings clarify the pathophysiology of slipped epiphyses in this patient population, guiding therapeutic strategies.