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Web space (thumb)

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The thumb web space, unlike the palmar web spaces, is not bounded by transverse ligaments. This permits greater mobility.

Relations:

  • palmar and dorsal surfaces: skin superficial to deep fascia overlying muscles
  • proximal: junction of transverse head of adductor pollicis and first dorsal interosseous muscle
  • distal: margin of web skin
  • ulnarly: first dorsal interosseous muscle, radialis indicis artery
  • radial: adductor pollicis, princeps pollicis artery

The thumb web space is filled with fibrofatty material.

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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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