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Web space (thumb)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

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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