Valgus Slipped Capital Femoral Epiphysis Associated With Osteosclerotic Dysplasia Due to Hyperphosphatemic Tumoral Calcinosis: A Case Report.

Authors

Jonathan Reddy, Siddarth Kamath, Kumar Amerendra Singh, Hitesh Shah

Published in

JBJS case connector. Volume 16. Issue 3. Jul 01, 2026. Epub Jul 30, 2026.

Abstract

A 13-year-old boy presented with a painful limp for 2 weeks without trauma and guarded (L) hip movements with spasm. Radiographs revealed a valgus slipped capital femoral epiphysis (SCFE) of the left hip with generalized osteosclerosis. Elevated serum calcium, phosphate, and parathyroid hormone levels were noted. Whole-exome sequencing identified a homozygous FGF23 variant, confirming hyperphosphatemic tumoral calcinosis. He was managed with phosphate binders, dietary restriction, and in situ fixation of both hips. At the 2-year follow-up, alignment and function were normal.
Association of valgus SCFE with metabolic or sclerosing bone dysplasia requires careful assessment to achieve favorable outcomes.

PMID:
42531376
Bibliographic data and abstract were imported from PubMed on 31 Jul 2026.

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