Superficial Arch and Superficial Branch of Radial Artery

  • The superficial vascular arch connects the ulnar artery to the superficial branch of the radial artery.
  • The superficial vascular arch  is located at the junction of palmar section 7 and 8.
  • The superficial palmar branch of the radial artery (SPBRA) originates from the bifurcation of the radial artery in the distal forearm or volar carpal area. The exact location of this bifurcation is variable.
Diagrams & Photos
  • The superficial palmar branch of the radial artery (SPBRA)
    The superficial palmar branch of the radial artery (SPBRA)
  • The superficial vascular arch with its connection to the ulnar artery visible.
    The superficial vascular arch with its connection to the ulnar artery visible.
Key Points
  • There is significant variation in the completeness of the superficial palmar arch and the contributions by the ulnar and/or radial artery.
  • The superficial palmar arch anastomosis with the superficial branch of the radial artery at the border between the thenar space and the mid-palmar compartment space.
  • In the area of the distal palmar wrist crease, the superficial palmar branch of the radial artery (SPBRA) enters the base of the thenar muscles. After passing through the thenar muscles it anastomoses with the superficial vascular palmar arch.
  • Sometimes the superficial palmar branch of the radial artery (SPBRA) passes through the subcutaneous tissues of the thenar eminence instead of going through the thenar muscles.
Anatomy References
Anatomic Abbreviations
Hand Surgery Resource Anatomy Diagnostic Guide (Chapter)