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Cleft hand

Disease Information

Tests

At Children’s Hospital Boston, we understand that the first step to treating your child is obtaining an accurate, timely and thorough diagnosis.

Cleft hand develops between the 28th and 56th day of fetal development—when the bones of the hand are forming. The condition can sometimes be detected on a routine prenatal ultrasound. After the baby is born, the deformity is visible.

 

Details of the diagnosis are usually confirmed through a physical exam and x-rays. Your child’s doctor will closely evaluate every anatomic structure of your child’s hand, determining what is present or absent, normal or abnormal. The doctor will take particular care to assess the specifics of the soft tissue of your child’s hands, including ligaments, blood vessels, nerves and muscles.

If your child is diagnosed with a cleft hand, her doctor will check for other associated deformities or syndromes, including:

  • cleft lip and palate
  • ectrodactyly (split hand-split foot malformation)
  • foot abnormalities
  • encephalocele (protrusion of brain membrane)
  • conditions affecting the heart and digestive systems
  • (rarely)deafness

Types of cleft hand
In diagnosing the condition, your child’s doctor will likely classify it as one of five types, based on an assessment of the first web space (the space between the thumb and index ray)—from Type I (least severe) to Type V (most severe).

Type

Description

 

I

Normal first web space

 

IIA

Mildly narrowed first web space

 

IIB

Severely narrowed first web space

 

III

Syndactylized thumb and index rays and first web space

 

IV

Merged first web space and cleft, index ray suppressed

 

V

Absent web, thumb suppressed, ulnar rays present

 

In many types of cleft hand, there can also be highly variable degrees of absent muscles, nerves and blood vessels.

 Children’s Orthopedic Clinical Effectiveness Research Center (CERC)

Our Orthopedic Clinical Effectiveness Research Center (CERC) was established by our
Orthopedic Center to improve the quality of life for children with musculoskeletal disorders. This collaborative clinical research program is unique in the nation and is playing an instrumental role in establishing evidence-based standards of care for pediatric orthopedic patients throughout the world.

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