Publications by authors named "Yong-Ping Ruan"
Objective: To investigate therapeutic effects of vacuum sealing drainage (VSD) in the treatment of soft tissue defect combined with tendon and bone exposure.
Methods: From October 2007 to February 2011, 397 patients (412 feet) with open ankle fracture and dislocation combined with soft tissue defected were treated by VSD. There were 301 males and 96 females with an average age of 36 years (ranging age from 20 to 73 years).
Objective: To investigate the clinical results of the proximal femoral nail antirotation (PFNA) system in the treatment of unstable intertrochanteric femoral fractures.
Methods: From September 2006 to September 2009, 90 patients (40 males and 50 females, ranged in age from 64 to 95 years with an average of 73.2 years with unstable intertrochanteric femoral fractures were surgically treated with PFNA.
Objective: To study the clinical results of surgical treatment for Lisfranc fracture-dislocation.
Methods: From January 2003 to September 2009, 57 patients with Lisfranc injuries were treated by surgical operation included 41 males and 16 females with an average age of 33.8 years old ranging from 20 to 64 years.
Objective: To explore the operative methods and effects of treatment of old acetabular fractures.
Methods: From October 2001 to October 2007, 26 patients with old acetabular fractures were treated with operation including 21 males and 5 females with an average age of 34 years ranging from 18 to 65 years. On the basis of the three-dimensional computed tomography, all cases were diagnosed and classified according to Letourne-Judet classification, 9 cases were posterior wall fracture, 3 cases were lateropulsition fracture, 7 cases were lateropulsition and posterior wall fracture, 2 cases were posterior column and posterior wall fracture, 2 were T-shape fracture, 3 were dual column fracture.
Objective: To get morphologic parameters of Chinese adults through observation and measurement on axial laminas, to evaluate the feasibility of placing axial laminar screws and to introduce the technique.
Methods: Relative parameters of 28 sets of fresh Chinese adults'axial specimens, including distance from the superior and inferior entry points of axial laminar screws to the superior margins of axial laminas, superior, middle, inferior thickness and height of the axial laminas, length and angle of the axial laminar screw trajectories, distance from the entry points of axial laminar screws to the transverse foramen and central points of the inferior articular process, were measured with a digital caliper and a goniometer. Data were statistically analyzed.
Objective: To explore pedicle screw implantation for fracture-dislocation injuries at cervicothoracic junction (C6-T2).
Methods: Pedicle screw implantation was used for twenty-six patients with cervicothoracic fracture-dislocation from May 2001 to Jan 2008. There were 17 males and 9 females with an average of 48.
Objective: To explore the safety and effect of the technique of reconstructing anterior and middle column by posterior approach in treatment of lumbar burst fractures.
Methods: From July 2005 to January 2007, 22 patients of lumbar burst fractures (18 males and 4 females, the age was from 28- to 57-years-old with an average of 42.7 years) were treated as the following surgical procedures: based on the routinal posterior approach, one of the transverse process of the injured vertebral was incised to get access to the lateral side of the injured vertebral body.
Objective: To explore the safety and effect of the technique of reconstructing anterior and middle columns by posterior approach in treating lumbar burst fractures.
Methods: From July 2005 to January 2007, 22 cases (18 males and 4 females, aged 28-57 years, 42.7 years on average) of lumbar burst fractures were treated with surgical procedures in our hospital.
Objective: To evaluate the screw pull-out strength of posterior C2 when the screw is fixed to C2 through the trans-pedicle or lateral mass or trans-laminar unicortically or bicortically,so as to provide biomechanical basis for the clinical application of posterior C2 screw fixation technique.
Methods: The pedicle screw,the lateral mass screw or the laminar screw was separately anchored into 30 fresh C2 specimens unicortically or bicortically. The screw pull-out strength of different fixation was tested and compared with the others.
Objective: To Analyze the therapeutic efficacy of all pedicle screws technique applied to the treatment of idiopathic scoliosis and evaluate its safety.
Methods: From June 2002 to October 2005, 56 patients with idiopathic scoliosis were treated with all pedicle screws technique, including 11 males and 45 females, ranging in age from 8 to 22 years. According to Lenke classification, 29 patients were Type 1, 6 patients were Type 2, 8 patients were Type 3, 2 patients were Type 4, 8 patients were Type 5, and 3 patients were Type 6.
[The feasibilty study of posterior laminar screw fixation techniques in axis].
Zhongguo Gu Shang
August 2008
Objective: Observation and measurement were done on axial laminar to get the parameters of morphology in Chinese. To evaluate the possibility of the placement of axial laminar screw.
Methods: The relative parameters of 28 sets of fresh Chinese adults' axial specimens were measured with a digital caliper, a goniometer and imageology, including the distance from superior and inferior the anchor point of the axial laminar screw to superior margin of the axial laminar, the superior,middle and inferior thickness of axial laminar, the height of axial laminar, the length and the angle of the axial laminar screw trajectory, the distance from the anchor point of the axial laminar screw to hole of vertebral artery and the central point of inferior articular process and so on.
[Pedicle lag screw for the treatment of indicated Hangman fractures].
Zhongguo Gu Shang
September 2008
Objective: To define the indication of C2 pedicle lag screw to treat Hangman fractures and evaluate its results.
Methods: Twenty-eight patients with Hangman fractures were enrolled from July 2003 to June 2007. Six, 17 and 5 patients classified as type I , II and IIa injuries respectively according to Levine-Edwards classification and graded as D spinal injury in 3 cases and E in 7 cases according to Frankel scale.
Objective: To explore the treatment of anterior decompression and reconstruction for burst thoracolumbar fractures with anterior and median column injury and to evaluate the therapeutic effect.
Methods: Thirty-four patients suffering from burst thoracolumbar fractures with anterior and median column injury (male 22 and female 12, aged from 20 to 63,with an average of 40.5 years) were treated by anterior decompression and reconstruction from May 2001 to October 2006.
Objective: To compare the potential incidence of nerve root (ventral and dorsal ramus) injury caused by cervical transarticular screws and Roy-Camille lateral mass screws.
Methods: Insertion techniques with Klekamp transarticular screws and Roy-Camille lateral mass screws were respectively performed in this study. Each technique involved four specimens and 40 screws, which were inserted from C(3) to C(7).
[The assessment of accuracy and safety of thoracic pedicle screw placement in the fracture of thoracic spine].
Zhonghua Wai Ke Za Zhi
December 2006
Objective: To investigate the accuracy and safety of pedicle screw placement in the fracture of thoracic spine.
Methods: On the basis of imaging for the fracture of thoracic spine of 50 cases, the screw prick point, angle, depth and diameter were measured and defined on the thoracic vertebrae pedicle by CT thin-slice scan in standard prone in all cases. The accuracy and safety of screws placement was evaluated with X-ray and CT thin-slice scan in all cases postoperative.