Slip disc or back disc herniation is most common spinal disorder.
Slip disc meaning is protrusion of part of the disc in spinal canal
causing pressure on spinal cord and nerves.This leads to
inflammation around spinal nerves and will cause Sciatica
Causes
Primary cause of slip disc is age related degeneration (chronic wear
and tear). This causes loss of water content of the disc material
leading to loss of it’s shock absorbing capabilities.
Patients who are overweight and who have poor lifestyle (wrong
posture, long sitting, inactivity) are more prone to develop these
degenerative changes.
Occasionally, acute injury and accident also can be the cause of
disc prolapse.
Slip Disc Symptoms:
A disc herniation can be totally asymptomatic, especially if the size
of disc herniation is small. However, in majority of the cases, the
slipped disc causes varying amount of symptoms depending upon
size herniated disc, duration of pressure on nerves and
inflammation around the nerve. Initially, patients will feel pain at the
site of disc prolapse (neck in case of cervical disc prolapse, upper
back in case of thoracic disc prolapse and lower back in lumbar disc
prolapse).
When spinal nerves in the vicinity starts getting affected, pain and
tingling-numbness in the extremities (radiculopathy or Sciatica)
which may lead to loss of sensation or loss of muscle power in
severe cases. In extreme situation with sudden and severe
pressure on spinal cord, patient might lose bladder-bowel control
also, which requires urgent spinal cord decompression surgery to
prevent permanent damage to the spinal cord. A disc prolapse in
cervical and thoracic spine can also cause rigidity in the body
(spasticity) with loss of balance.
Slip Disc Diagnosis:
Primary diagnosis of a slip disc is made based on typical clinical
history of local pain in spine with nerve related symptoms in the
extremities. On physical examination, spine specialist may also
find evidence of nerve stretch and compression signs on upper/
lower extremity in the form of loss of sensation and muscle
weakness. An X-RAY is usually done as first line of investigation to
rule out major bone abnormality.
In severe cases which are not responding to medical treatment and
physiotherapy, an MRI Scan is done which will show the level and
degree of prolapsed disc, and will help spine specialist determine
which kind of treatment will be best for the patient. In certain
situations an EMG-NCV (Electromyography-Nerve Conduction
Velocity) is done to assess nerve function. A CT Scan is done when
detailed assessment of bone structure is required or when MRI
cannot be done.
Treatment:
A proper medical treatment, some amount of activity restriction and
slip disc exercises (physiotherapy) provides sufficient pain relief to
most of the patients to help them live an active life. For the patients
who don’t get relief by medical treatment, various options are
available.
1. Epidural Injections: For patients who primarily present with
radiculopathy (arm/ leg pain) and don’t have emergency
symptoms (loss of sensation, weakness, loss of bladder-bowel
control), epidural injection can be tried to provide pain relief to
the patient. A small amount of anaesthetic medication and
steroid are injected next to the prolapsed disc. This reduces
inflammation on spinal nerve as well as disc material to
provide relief to the patient. If symptoms recur, injection can be
repeated 2-3 times.
• Microdiscectomy: Patients who do not get adequate relief
after medical treatment or epidural injection, or those who
have emergency symptoms need to undergo slip disc surgery
with removal of protruded disc material. Microdiscectomy is
most commonly done slip disc surgery. A small hole is made
on the skin and only the part of disc which has come out is
removed. There is immediate relief of symptoms and recovery
is very quick.
• Endoscopic Discectomy: A small tube like endoscope is
inserted in the body under local/ general anaesthesia and
protruded disc is removed under magnified endoscopic vision.
Recovery from this surgery is very quick and this procedure
can be done as day-care also.
In patients with associated significant back pain/ neck pain, severe
disc degeneration (spondylosis), vertebral slip (spondylolisthesis),
spine fracture (spondylolysis) and spine deformity (scoliosis/
kyphosis), a spine fusion/ instrumentation might also be advised by
your spine doctor along with the removal of slipped disc.
The information provided here is for general educational purposes
only. For specific advice regarding back pain treatment, please book
an appointment with one of our surgeons.
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