Posterior Lumbar Decompression for Spinal Stenosis

Following your recent MRI scan and consultation with your spinal surgeon you have been diagnosed with a narrowing of your lumbar spinal canal (stenosis). This is usually related to the wear and tear of the spine.

The normal spinal column has a central canal (or passage)through which the spinal cord passes down. To each side of the canal, spinal nerve roots branch out at every level. The spinal cord stops at the top of the lumbar spine (low back)and below that tiny nerve rootlets splay out like a horse’s tail (cauda equina). The spinal cord, nerve roots and cauda equina are protected by a tough outer membrane, or covering, called the dura mater.

In spinal stenosis, the spinal nerve roots and / or cauda equina become trapped or compressed by the bony spurs (osteophytes) on enlarged facet joints and the ‘buckling’ of a ligament (the ligamentum flavum which protects the dura mater). These changes consequently narrow the spinal canal.

  • Ashford and St Peter’s Hospital

    NHS

    Ashford and St Peter’s
    Hospital
    NHS Foundation Trust
    Guildford Road, Cherstey,
    Surrey, KY16 0PZ.
    Ph: 01932 872 000
  • The BMI Runnymede Hospital

    Private

    The BMI
    Runnymede Hospital
    Guildford Road,
    Ottershaw, CHERTSEY,
    KT16 0RQ.
    Ph: 01932 877800
  • Spire St Anthony’s Hospital

    Private

    Spire St Anthony’s
    Hospital
    801 London Road,
    NORTH CHEAM,
    SM3 9DW.
    Ph: 020 8337 6691
  • Nuffield Health Woking Hospital

    Private

    Nuffield Health
    Woking Hospital
    Shores Road,
    WOKING,
    GU21 4BY.
    Ph: 01483 331257
  • Ramsay Health Ashtead Hospital

    Private

    Ramsay Health
    Ashtead Hospital
    The Warren,
    Ashtead, Surrey.
    KT21 2SB.
    Ph: 01372 221400