Study: NCT02459392

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Epiduroscopy
Description: Epiduroscopy has two main uses in the pain clinic:~Releasing epidural adhesions for the relief of chronic sciatica. Adhesions can form around the lower lumbar nerve roots after decompressive surgery for disc disease or after a bad bout of inflammatory sciatica in the absence of surgery. Epidural adhesions can usually be identified on an enhanced magnetic resonance scan using intravenous gadolinium. They also cause uneven spread of X-ray contrast when performing an epidurogram.~Injecting mixtures of local anesthetic and depot steroid around inflamed nerve roots when epidural injections / nerve root blocks have been unsuccessful. The presence of adhesions can prevent epidurally injected drugs from reaching the inflamed nerve roots.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Epiduroscopy
Description: Epiduroscopy has two main uses in the pain clinic:~Releasing epidural adhesions for the relief of chronic sciatica. Adhesions can form around the lower lumbar nerve roots after decompressive surgery for disc disease or after a bad bout of inflammatory sciatica in the absence of surgery. Epidural adhesions can usually be identified on an enhanced magnetic resonance scan using intravenous gadolinium. They also cause uneven spread of X-ray contrast when performing an epidurogram.~Injecting mixtures of local anesthetic and depot steroid around inflamed nerve roots when epidural injections / nerve root blocks have been unsuccessful. The presence of adhesions can prevent epidurally injected drugs from reaching the inflamed nerve roots.

Intervention type: OTHER
Group type: OTHER
Intervention: Epiduroscopy
Description: Epiduroscopy has two main uses in the pain clinic:~Releasing epidural adhesions for the relief of chronic sciatica. Adhesions can form around the lower lumbar nerve roots after decompressive surgery for disc disease or after a bad bout of inflammatory sciatica in the absence of surgery. Epidural adhesions can usually be identified on an enhanced magnetic resonance scan using intravenous gadolinium. They also cause uneven spread of X-ray contrast when performing an epidurogram.~Injecting mixtures of local anesthetic and depot steroid around inflamed nerve roots when epidural injections / nerve root blocks have been unsuccessful. The presence of adhesions can prevent epidurally injected drugs from reaching the inflamed nerve roots.

Intervention type: OTHER
Group type: OTHER
Intervention: Epiduroscopy
Description: Epiduroscopy has two main uses in the pain clinic:~Releasing epidural adhesions for the relief of chronic sciatica. Adhesions can form around the lower lumbar nerve roots after decompressive surgery for disc disease or after a bad bout of inflammatory sciatica in the absence of surgery. Epidural adhesions can usually be identified on an enhanced magnetic resonance scan using intravenous gadolinium. They also cause uneven spread of X-ray contrast when performing an epidurogram.~Injecting mixtures of local anesthetic and depot steroid around inflamed nerve roots when epidural injections / nerve root blocks have been unsuccessful. The presence of adhesions can prevent epidurally injected drugs from reaching the inflamed nerve roots.

Intervention type: DRUG
Group type: EXPERIMENTAL
Intervention: Hyaluronic Acid
Description: Drug administration