Wrist - Carpal Tunnel

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Radiographic Positioning

Other related pages of interest

Name of projection Wrist - Carpal Tunnel / Canal
Area Covered Carpal tunnel, the carpals are demonstrated in a tunnel like arched arrangement
Pathology shownBoney impingement of carpal tunnel, abnormal calcification and bony changes in carpal sulcus that may create impingement on the median nerve as with carpal tunnel syndrome
Radiographic AnatomyWrist Radiographic Anatomy
IR Size & Orientation 18 x 24cm
Film / Screen Combination Detail
(CR and DR as recommended by manufacturer)
Bucky / Grid No
Exposure 50 kVp
FFD / SID 100cm
Central Ray Direct to a point approximately 3cm distal to the base of third metacarpal (centre of palm of hand)
Collimation Collimate on four sides to area of interest
Markers Lateral
Marker orientation AP
Shielding Gonadal (check your department's policy guidelines)
RespirationNot applicable
  • Patient seated at end of table
  • Forearm pronated (palm down)
  • IR under wrist
  • Hyperextend the wrist as far as possible by grasping the fingers with the other hand and gently but firmly hyperextending the wrist so that metacarpals and fingers are near vertical


Area Covered



Special Notes