Cleft Hand Symptoms & Causes

LIke ThisLIke ThisLIke ThisLIke ThisLIke This

Contact the Hand and Orthopedic Upper Extremity Program

  • 617-355-6021
  • International: +1-617-355-5209
  • Locations

At Boston Children's Hospital our skilled experts in our Orthopedic Center's Hand and Orthopedic Upper Extremity Program know that it’s distressing to learn that your baby has a cleft hand. We’ve pioneered innovative surgical treatments for children with all types and variations of cleft hand.

What is cleft hand?

Cleft hand is a rare congenital (meaning your baby was born with it) birth defect in which the hand didn’t develop properly during fetal development. This causes the affected hand to have missing fingers, a V-shaped cleft and other deformities.

cleft hand

What causes cleft hand?

There’s a clear genetic basis for typical cleft hands. Inheritance of cleft hand is autosomal dominant: This means that if a parent has the condition, the child has a 50 percent chance of having it, too.

Cleft hand can occur in isolation or as part of a genetic syndrome, such as cleft lip and palate or ectrodactyly (split hand-split foot malformation).

How common is cleft hand?

Cleft hand is very rare. It affects between one in 10,000 and one in 90,000 babies. An isolated cleft hand (in which there’s no associated clinical syndrome or systemic illness) accounts for fewer than 5 percent of all congenital hand conditions.

How will having a cleft hand affect my child?

It really depends on the severity of the problem, and the severity of the problem is usually tied to how much or little function your child’s hand has. Some children can grasp, pinch and release with just a mild degree of cleft hand, while others experience an extreme lack of hand function.

Does cleft hand cause my child pain?

No. Typically, a child doesn’t experience pain as a result of cleft hand.

What are the signs and symptoms of cleft hand?

In a cleft hand, there are always clefts in the central (middle fingers) part of the hand, and they’re usually V-shaped. However, clefts can also occur on the thumb (radial) side of the hand, or, less commonly, on the little (ulnar) finger side. They can also occur in various combinations.

Can cleft hand be associated with other conditions?

In the majority of children who have it, a cleft hand may be an isolated occurrence, affecting only her hand. But your doctor will check for other associated deformities or syndromes, including:

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

Signs and symptoms

Signs of cleft hand are visible at birth, and increasingly, on prenatal ultrasound.

   •    The baby’s hand has missing fingers, a V-shaped cleft and other deformities.
   •    There is always a central (middle fingers) cleft.
   •    But there can also be radial (thumb side) cleft, an ulnar (little finger side) cleft, or various
        cleft combinations.

When to see a specialist

If a fetal ultrasound reveals that your baby has a cleft hand, you’ll be referred to a hand specialist, who will help you plan for your child’s care after she’s born. If you haven’t learned during your pregnancy that your child has a hand problem, the cleft hand will be visible when your baby is born, and you will be referred to a hand specialist.

Questions to ask your doctor


Lots of parents find it helpful to write down questions as they occur to them before their appointment—that way, when you talk to your child’s doctors, you can be sure that all of your concerns are addressed.

Some questions you could ask are:

   •    Why did my child develop a cleft hand? (You would ask this if neither your partner nor you
        have a cleft hand.)
   •    What will x-rays reveal beyond what is visible to the eye?
   •    What are the associated conditions, if any, with a cleft hand?
   •    Is surgery necessary, and if so, what does it entail? Are there alternative therapies?
   •    Will my child be OK after surgery? Could there be complications?
   •    Will my child recover full function of her hand? Will it look OK?
   •    Will there be restrictions on her activities or capabilities?
   •    Will my child need physical therapy?
   •    What will be the long-term effects?
   •    What can we do at home?

For parents

If your baby was born with a cleft hand—or if you’re expecting a child who will have a cleft hand—you’re probably disappointed that your child and your family are facing a complicated path so early in her life. If you feel frustrated or depressed, speak to your doctor or counselor to get help. Professionals in Boston Children’s Center for Families can provide you with important resources and referrals.


Cleft hand glossary


   •    autosomal dominant: genetically predisposed to have the same trait as a parent; in the case of cleft hand, if a
        parent has the condition the child has a 70 percent chance of having it, as well.
   •    cleft hand: hand is missing fingers (cleft) and has highly variable deformities. Clefts are always central (middle
        fingers) and are usually V-shaped; they can also be radial (thumb side), ulnar (little finger side), or in
        combinations of these.
   •    congenital: present at birth
   •    embryonic development: development of the fetus in the womb
   •    (first) web space: the space between digits; the first web space is the space between the thumb and
        index finger
   •    in isolation: a condition that occurs “by itself,” rather than as part of a larger syndrome
   •    in utero: in the womb (uterus)
   •    occupational and physical therapy: services offered by trained professionals to help restore function or
        (re)teach basic life skills, like dressing oneself or grasping objects
   •    orthopedics: the medical specialty concerned with diagnosing, treating, rehabilitating and preventing disorders
        and injuries to the spine, skeletal system and associated muscles, joints and ligaments
   •    orthopedic surgeon, orthopedist: a physician specializing in surgical and non-surgical treatment of the spine,
        skeletal system and associated muscles, joins and ligaments
   •    post-operative (post-op): occurring after surgery
   •    prenatal (fetal) ultrasound: ultrasound performed at several stages of pregnancy; can detect radial club
        hand in the fetus
   •    pre-operative (pre-op): occurring before surgery
   •    radial club hand: a deformity in which the forearm doesn’t develop properly, causing the hand to be bent
        inward toward the thumb with limited movement
   •    radius: forearm bone on the inner (thumb) side
   •    range of motion (ROM) exercises:physical therapy exercises designed to improve or restore flexion and
        extension of joints
   •    reconstructive surgery: surgery performed to repair and/or restore a body part to normal or as near normal
        as possible
   •    sporadic: occurring without apparent cause
   •    syndactyly: digits partially or completely united
   •    ulna: forearm bone on the outer (little finger) side
   •    x-rays: a diagnostic test that uses invisible electromagnetic energy beams to produce images of internal tissues,
        bones, and organs onto film


Boston Children’s is so much more than a hospital—it’s a community of researchers, clinicians, administrators, support staff, innovators, teachers, patients and families, all working together to make the impossible possible. ”
- Sandra L. Fenwick, President and CEO

Boston Children's Hospital
300 Longwood Avenue, Boston, MA 02115
For Patients: 617-355-6000
For Referring Providers: 844-BCH-PEDS | 844-224-7337