Study Of Neck Pain In Relation To Change Of Cervical Epidural Pressure During Percutaneous Endoscopic Lumbar Discectomy Under Local Anesthesia

Objective: Discuss the relation between the posterior neck pain and cervical EP when PELD via interlaminar approach under local anesthesia.Methods: 28 patients who undergoing PELD via interlaminar approach in 2013-2015,everyone placed a cervical epidural catheter at the C6–C7 level before the procedure and was connected to a pressure transducer. cervical EP were monitored continuously throughout the procedure.Initial cervical EP, cervical EP at the time of neck pain,maximal cervical EP and cervical EP at the end of the procedure were checked.Results: Of 28 patients, 6 patients complained of posterior neck pain.The maximal cervical EP in those with neck pain was 67.8±12.4mmHg,The cervical EP at the time of neck pain was 51.5±10mmHg,both of them were significantly higher than the maximal cervical EP in patients without neck pain(29.6±12.6mmHg),P<0.01;In the linear tread chi-square test,pations with higher max cervical EP had higher probabilities of having neck pain, P<0.01.Conclusion: During PELD via interlaminar approach,Neck pain occurring is associated with a increased cervical EP.