The following lists some possible causes of leg discomfort among computer users.  Potential corrective action to consider is also listed.

• Feet dangling and not well-supported
  • if current chair height is appropriate for work station and keyboard, use a footrest; otherwise, check to see if chair height and keyboard can be lowered
• Posture that puts pressure on the back of the thighs
  • lower chair height; use a footrest; tilt seatpan forward slightly
• When sitting, there is pressure behind the back of the knee
  • shorten the distance between the backrest and the front of the seatpan — try a strap-on back support or pillow