Rare diseases · Sign or symptom
Flattened femoral head
Flat head of thigh bone
HP:0008812
What it means
An abnormally flattened femoral head.
Rare diseases that can present with this10
Sometimes5–29%
6- Dysplasia epiphysealis hemimelica
- GM1 gangliosidosis type 1
- Progressive spondyloepimetaphyseal dysplasia-short stature-short fourth metatarsals-intellectual disability syndrome
- Spondyloepimetaphyseal dysplasia, Handigodu type
- Spondyloepiphyseal dysplasia tarda
- Spondyloperipheral dysplasia-short ulna syndrome
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: Flattened femoral heads
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Start free with EleplanThis 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.