[Percutaneous transforaminal endoscopic foraminoplasty for simple lumbar spinal lateral exit-zone stenosis].

Objective: To evaluate the clinical effects of percutaneous endoscopic foraminoplasty for simple lumbar spinal lateral exit zone stenosis.

Methods: A total of 36 patients with simple lumbar spinal lateral exit zone stenosis were admitted to our hospital from January 2013 to June 2018, and received selective nerve root canal radiography and radicular block. According to the symptoms and patients' personal wills, 22 cases underwent the one-stage percutaneous foraminal surgery(the one-stage operation group), and the other 14 patients were re-admitted to the hospital for operation(the delayed operation group) because of the recurrence of symptoms after discharge.

[Relationship between the prediction of the opening angle and the increased value of cross-sectional area in single open-door laminoplasty].

Objective: To evolve the formula of relationship between opening angle of laminoplasty and the increased value of cross-sectional area, and to predict the opening angle according to the opening size of lanminoplasty.

Methods: From January 2013 to December 2015, 26 patients underwent single open-door laminoplasty in C₃-C₇. Among them, 10 patients with ossification of posterior longitudinal ligament, there were 6 males and 4 females, aged from 39 to 58 years old with an average of 49.

[Long-term follow-up of Dynesys system in clinical application for the treatment of multiple lumbar degenerative disease].

Objective: To explore the clinical effects of Dynesys system for the treatment of multiple segment lumbar degenerative disease.

Methods: A total of 28 patients with lumbar degenerative disc disease treated with Dynesys system from December 2008 to May 2011 were retrospectively reviewed. There were 16 males and 12 females, aged from 27 to 75 years old with an average of 49.

[Clinical application of dynamic neutralization system (K-Rod) in treating multisegmental lumbar degenerative disease].

Objective: To evaluate the clinical effects of dynamic neutralization system (K-Rod) in treating multisegmental lumbar degenerative disease.

Methods: From October 2011 to October 2013, 20 patients with multisegmental lumbar degenerative disease were treated with dynamic neutralization system (K-Rod). There were 8 males and 12 females with an average age of 45.

[Treatment of thoracolumbar deformity with transpedicular eggshell technique].

Objective: To evaluate the clinical effects of transpedicular eggshell technique in treating thoracolumbar deformity.

Methods: From December 2008 to December 2011,36 patients with thoracolumbar deformity were treated with transpedicular eggshell technique. There were 20 males and 16 females with an average age of 45 years old (ranged from 20 to 58).