Medically the evaluation by Elaine K. Luo, M.D., specialty in inner medicine — composed by Corey Whelan ~ above September 23, 2019

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There’s a typically held falsehood that men have actually one less rib than women. This legend may have its roots in the Bible and the creation story about Eve gift made from one of Adam’s ribs.

This myth is exactly that: an unproven, incorrect belief. It’s no longer organized as fact by spiritual leaders of any kind of denomination.


The vast majority of civilization are born v 12 pairs of ribs, for a full of 24, no matter their sex.

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The exemption to this anatomy rule are human being born with details genetic anomalies. These can take the kind of too countless ribs (supernumerary ribs) or too few (agenesis of ribs).


Cervical rib

Cervical rib is a hereditary mutation which reasons some civilization to be born through one or 2 extra ribs between the basic of the neck and also the collarbone.

People born with this problem may have one extra rib on either side, or one extra rib top top both sides. This ribs may be fully formed bones, or they might be organization fiber strands that don’t contain any type of bone.

Cervical rib is a condition that can impact any sex.

Many human being who have this problem don’t have any kind of symptoms and are unaware that they have it. Others suffer discomfort, such together neck pain or numbness, resulted in by the cervical rib pushing down top top nerve end or blood vessels.

Cervical rib may result in a condition called thoracic outlet syndrome (TOS). TOS typically appears in adulthood and may affect an ext men than women. No everyone who has cervical rib will construct TOS.

Trisomy 21 (Down syndrome)

Down syndrome is a chromosomal disorder. Civilization born through Down syndrome sometimes have an extra rib, or a lacking 12th rib. No everyone who has actually Down syndrome has actually rib number variations.

Spondylocostal dysplasia

This rare, autosomal recessive disorder is also known as spondylocostal dysostosis. It requires an abnormal advancement of the ribs and also spine. In addition to scoliosis and also fused or misshapen vertebrae, human being born through this condition may have actually ribs that space fused together, or missing entirely.

Spondylothoracic dysplasia

Spondylothoracic dysplasia is an autosomal recessive condition. It’s additionally known together spondylothoracic dysostosis. Babies born with this problem have unify ribs and also fused vertebrae. They also have very small chest cavities, i m sorry can reason severe troubles with breathing.

Goldenhar syndrome (oculo-auriculo-vertebral spectrum)

Goldenhar syndrome is a rarely congenital condition that causes anomalies to take place in the spine, ears, and also eyes.

Babies born through Goldenhar syndrome may have one or two partially formed or missing ears, and benign eye growths. Lock may also have one underdeveloped jaw and cheekbone, and also ribs that space missing, fused, or not totally formed.


Rib abnormalities don’t need to be treated unless they cause problems, such together abnormal expansion patterns, difficulties with breathing, or pain.

Some rib deformities may be picked up via ultrasound, before your baby is born. Others might become obvious after birth, if her baby has a smaller sized chest size, or displays challenge with breathing. If so, therapy will focus on respiratory support.

Missing ribs are occasionally corrected surgically with a maker called a vertical expandable prosthetic titanium rib (VEPTR). VEPTRs have the right to be readjusted in size as your child grows.

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Spinal problems such as scoliosis might be treated surgically or v a brace.

If there are no troubles with posture, breathing, or walking, watchful waiting may be all that is required.

Adults v cervical ribs who begin to suffer symptoms associated with TOS may have actually their extra rib or ribs operation removed.