Rare diseases · Sign or symptom

Flat capital femoral epiphysis

Flat end part of innermost thighbone

HP:0003370

What it means

An abnormal flattening of the proximal epiphysis of the femur.

Rare diseases that can present with this6

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Flat capital femoral epiphyses · Flat femoral capital epiphyses · Flat proximal femoral epiphyses · Flattened proximal femoral epiphyses

Flat capital femoral epiphysis

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This page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.