Hook of hamate fracture

Last revised by Yuranga Weerakkody on 06 Nov 2022

Hook of hamate fractures (also sometimes termed type 1 hamate fractures) are rare. They are a form of hamate fractures and occur from the hamate fracturing after blunt trauma, falls, and in sports players (e.g. golf, baseball, racquet sports) from a direct blow while swinging. Stress fractures have also been reported. 

It may result in Guyon's canal syndrome

If occult on standard views, a carpal tunnel view may be of value for better assessment. CT can be considered if initial radiographs are negative. MRI is 100% sensitive and can be considered for high suspicion of injury.

This can be managed conservatively or with surgical excision or fixation depending on clinical status.

On imaging consider

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Cases and figures

  • Case 1
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  • Case 2
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  • Case 3
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  • Case 4
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  • Case 5: on ultrasound
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  • Case 6: carpal tunnel view
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  • Case 7: carpal tunnel view
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  • Case 8
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  • Case 9: on MRI
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