Objective To probe the therapeutic effects, indications and safety of the percutaneous lumbar discectomy (PLDP). Methods To ameliorate percutaneous punctured route based on classic PLD and modified jaw structure of pulpforcep, with statistic analysis of the therapeutic results of 352 cases of patient undergone PLDP and follow up ranging from 6 to 38 months retrospectively. Results The effective ratios were excellent in 45.5%, good for 45.4% and bad in 9.1%. 44 of 352 cases with pulps prolapse were cured. No intervertebral inflammation and paradisc hematoma took place. One case complicated with cauda equina injury and 4 cases with appliances broken inside the disc. Conclusions PLDP is effective and safe, not only adaptive to the contained disc herniation, but also for noncontained herniation.

Objective To investigate the feasibility and efficacy of treating C 7～T 1 intervertebral disc herniation by puncture cervical discotomy(PCD).Methods Three cases of C 7～T 1 intervertebral disc herniation were undergone PCD. Results All the procedures were succeeded with the main symptoms and signs of the 3 patients disappeared during 2 months after PCD. No recurrence occurred during the follow up of 7,11,16 months, respectively.Conclusion The treatment of C 7～T 1 intervertebral disc herniation by PCD is safe and effective.

Objective To ameliorate the percutaneous lumbar discectomy(APLD)for improving the effectiveness and amplifying the indicative range of PLD.Methods To ameliorate percutaneous punctured route based on classic PLD and discectomy of extracting pulp out of the herniated disc with special pulpforceps. The statistical analysis of the therapeutic results on 750 disc protrusions of 655 cases undergone APLD following up from 6 to 54 months retrospectively. Results The effective ratios were excellent in 40.2%, good for 46.6% and bad of 13.3%. No occurrance of intervertebral inflammation and paradiscal hematoma, there were only 1 case complicated with injuried cauda equina, and 4 cases with broken appliance within disc.Conclusions APLD is effective and safe, not only indicative for inclusion disc herniation,but also for noninclusion herniation.