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Thenar space (infection)

Authoring team

Infection of the thenar space of the hand is rare. It usually arises from:

  • penetrating injury
  • extension of midpalmar space infection
  • extension of flexor tendon sheath infection
  • extension of radial bursa infection

Clinically, there is a swollen and painful thenar eminence. The thumb may be pushed into abduction.

Depending on the site of infection, the space needs incision via one of the following routes:

  • volar transverse incision
  • thenar crease incision
  • dorsal incision
  • a combination

The wound is irrigated, packed and is given a delayed closure. Intravenous antibiotics are mandatory.


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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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