Clinical Neuroscience

KTP/532 precutaneous laser decompression for lumbar disc prolapse

MARTIN T. N. Knight1, SAMUEL T. Pantoja1

SEPTEMBER 20, 1996

Clinical Neuroscience - 1996;49(09-10)

The efficacy of percutaneous laser disc demompression with the potassium titanyl phosphate laser (KTP/PLDD) for the treatment of sciatica due to lumbar disc prolapse was evaluated in a consecutive series of 109 patients. All patients had low-back pain and leg pain with positive tension signs and had received conservative treatment for an average of 11.4 (1-28) months without relief of symptoms. Disc porlapse was confirmed by computed tomography or magnetic resonance imaging and evaluated with intraoperative discography. Patients with an uncontained disc porlapse were excluded from the study. Results at an average of 18 (12-28) months were based on the MacNab outcome criteria and on patient satisfaction after surgery. Overall success was noted in 75.2% (82/109). Failure was associated with severe lateral recess stenosis. Patients without known risk factors for a bad otucome (including severe lateral recess stenosis, back pain predominant over leg pain, previous surgery at the same disc level, unsettled compensation claim and singificant functional component) had an excellent or good result in 84% (42/50). KTP/PLDD has proven a safe and efficacious procedure for outpatient treatment of sciatica due to contained disc prolapse.


  1. The Spinal Foundation and Rochdale Infirmary NHS Trust Rochdale, Greater Manchester, England



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