This site is intended for US Healthcare Professionals only.
This site is intended for US Healthcare Professionals only.


Congenital hallux valgus in a newborn? It Could be FOP.

A person with FOP will appear healthy at birth with the exception of bilateral malformation of the great toes, which is present almost universally in those with FOP . The two great toes are typically
shortened and bent inwards, resembling a bunion. An X-ray may reveal monophalangism.

The malformation itself typically does not affect walking, and the sign is often dismissed. Early childhood years may be typical and active, although often with impaired neck movement.

Are Your Patient’s Great Toes Sending You a Signal?

By itself, this bilateral malformation of the great toes is not pathognomonic for FOP; however, presence of heterotopic bone along with bilateral hallux valgus would most likely suggest a diagnosis of FOP. Patients exhibiting these signs should be further evaluated for the disease.

Identifying clusters of signs and symptoms, especially bilateral malformation of the great toes and episodic soft tissue swellings, can speed diagnosis.

Learn more about making the clinical diagnosis of FOP >

fop toes

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Please always consult a healthcare professional if you require healthcare advice or if you have any specific concerns regarding Fibrodysplasia Ossificans Progressiva. The information provided here is not intended to replace professional advice. This website has been developed by Ipsen in collaboration with those living with Fibrodysplasia Ossificans Progressiva and the healthcare professionals who care for them. Ipsen would like to thank everyone for their valuable insights and stories. All names used on this website are not necessarily real names. Visit our website for more information about us, or to contact us directly. Website design and development by Kanga Health Ltd. Website reference NON-US-002031 December 2020