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Percutaneous Endoscopic Thoracic Discectomy : Posterolateral Transforaminal Approach

Lee, Ho-Yeon    (Department of Neurosurgery, Wooridul Spine Hospital   ); Lee, Sang-Ho    (Department of Neurosurgery, Wooridul Spine Hospital   ); Kim, Dong-Yun    (Department of Neurosurgery, Wooridul Spine Hospital   ); Kong, Byoung-Joon    (Department of Neurosurgery, Wooridul Spine Hospital   ); Ahn, Yong    (Department of Neurosurgery, Wooridul Spine Hospital   ); Shin, Song-Woo    (Department of Neurosurgery, Wooridul Spine Hospital  );
  • 초록

    Objective : Development of diagnostic tools has resulted in early detection of thoracic disc herniations[TDH] even when the herniated disc is soft in consistency. In some of the cases, it is considered better not to opt for surgical treatment due to the unduly high morbidity and potential complications associated with conventional approaches. The authors have applied percutaneous endoscopic thoracic discectomy[PETD] technique to soft TDHs in order to avoid the morbidity associated with conventional approaches. Methods : Eight consecutive patients [range, 31 to 75 years] with soft lateral or central TDH [from T2-3 to T11-12] underwent PETD between May 2001 and June 2004. The patient was positioned in a prone position with intravenous sedation and local anesthetic infiltration. The authors introduced a cannula into the thoracic intervertebral foramen using endoscopic foraminoplasty technique. Discectomy was performed with mechanical tools and a laser under continuous endoscopic visualization and flu oroscopic guidance. Functional status was assessed preoperatively and postoperatively using the Oswestry Disability Index[ODI]. Results : The mean ODI scores improved from 52.8 before the surgery to 25.8 at the final follow-up. In cases of myelopathy, long tract signs showed improvement. The mean operative time was 55 minutes, and no patient required conversion to open surgery. Conclusion : The technique allows a smaller incision and less morbidity. Soft TDH is amenable to this minimally invasive approach in selected patients with myeloradiculopathy.


  • 주제어

    Lateral or central soft disc herniation .   Myeloradiculopathy .   Percutaneous endoscopic discectomy .   Posterolateral approach .   Thoracic disc herniation.  

  • 참고문헌 (18)

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