Bifid rib

Dr Ian Bickle and A.Prof Frank Gaillard et al.

Bifid or forked ribs are uncommon. They are thought to occur in ~0.2% of the population and there may be a female as well as right-sided predilection 2.

Clinical presentation

Usually asymptomatic, they may cause musculoskeletal pain or intercostal nerve entrapment. A bifid first rib is an uncommon cause of thoracic outlet syndrome.

Pathology

Associations

Bifid ribs can be seen in Gorlin (nevoid basal cell carcinoma) syndrome.

Forked ribs can also be seen with truncus arterioles and tetrology of Fallot.

Anatomy: Thoracic
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Article information

rID: 990
Section: Anatomy
Synonyms or Alternate Spellings:
  • Forked rib
  • Bifid ribs
  • Forked ribs

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Cases and figures

  • Case 1: left 6th bifid rib
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  • Case 2: left 4th anterior bifid rib
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  • Case 3: ultrasound - bifid right 3rd rib
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  • Case 4: right 5th bifid rib
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  • Case 5
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  • Case 6
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  • Case 7
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  • Case 8
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  • Case 9
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