Femur fibula ulna complex

Also known as

  • FFU Syndrome

Femur Fibula Ulna Complex is a very rare syndrome characterized by abnormalities of the femur, fibula and the ulna.

Condition details

The cause if the condition is unknown. It usually occurs out of the blue and there has only been one report of more than one affected sibling. It is not associated with any intellectual disability or other medical problems. The condition is more common in boys and usually affects anywhere from one to four limbs it is usually unilateral it can be bilateral.

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Photos of affected individuals

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  • No baby imageBaby
  • No toddler imageToddler
  • No child 4-10 imageChild 4-10
  • No child 10-18 imageChild 10-18
  • No adult imageAdult

Typical age range of first manifestation

  • Can manifest in Baby
  • Does not manifest in Toddler
  • Does not manifest in Child 4-10
  • Does not manifest in Child 10-18
  • Does not manifest in Adult


Lay terms Clinical terms
  • Abnormalities in limb development in my sons case he has no left hip or socket
  • his left femur bone developed as descibed as corkscrew' going on to develop a normal knee and lower leg. On his right upper side he has an undeveloped elbow
  • shortened ulna bone
  • small palm a thumb and two fingers.

Affected genes identified to date

  • Not known

Inheritance patterns

Is Autosomal dominant

Are carriers affected?

Not known

How many are affected?

7 in 100,000 births

Support groups and organisations

No groups found

Known experts

No experts found

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