Back pain when sitting and sciatica: how to relieve your lower back in daily life (office, car, bed)

Back pain is rightly nicknamed "the disease of the century." Today, more than 8 out of 10 people suffer or will suffer from debilitating lower back pain at some point in their lives.

Whether it's during a long day of working at a screen, commuting by car, or sitting on the couch, the mechanism of the pain is identical: the progressive loss of the natural lumbar curve when sitting for long periods.


Biomechanics of lower back pain: what happens to your L4-L5-S1 vertebrae?

When standing, your spine forms a harmonious lordosis that absorbs shocks and distributes the weight of gravity.

As soon as you sit in a standard chair without targeted support:

  • Pelvic retroversion: The pelvis tilts backward, forcing the lower back to round.
  • Discal hyper-pressure: The pressure exerted on your intervertebral discs climbs from 100 kg (standing) to over 185 kg when slouching in a seat.
  • Sciatic nerve pinching: This mechanical stress compresses the nerve roots, generating painful radiating sensations in the buttock and thigh.

The 3 golden rules for protecting your back while sitting

  1. Fill the lumbar hollow: Maintain firm support at the L1 to L5 vertebrae to prevent the back from rounding.
  2. Realign the head-shoulders axis: By supporting the lumbar region, the upper body naturally straightens without tension in the trapezius muscles.
  3. Change your sitting position dynamically: Use a portable accessory that follows you from the office to the car.

The ergonomists' choice: the Bedford Ergonomic Lumbar Cushion

To counter the ill effects of a sedentary lifestyle, the Bedford Ergonomic Lumbar Cushion instantly restores the physiological alignment of the spine:

  • Non-deformable 50D memory foam: Firm and durable support that absorbs vibrations in the car and compression on chairs.
  • Anatomical butterfly curve: Stabilizes the sides and keeps the lower back centered on the seat.
  • Secure universal attachment: Equipped with an adjustable anti-slip strap compatible with all chairs and car seats.
  • Breathable 3D mesh fabric: Optimal thermal regulation for cool comfort all day long.

💡 Tip for the night: Placed under the lower back or under the knees when lying on your back, this cushion fills the arch and immediately relieves nocturnal sciatica.

French Days Offer: 40% Off Now

Get the Lumbar Cushion for €49.90 instead of €69.90.

Discover the Lumbar Cushion (30-day trial)
Back to blog