Yong-ping Ruan

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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(More)
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(More)
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(More)
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(More)
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(More)
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. According to Myerson's classification, there(More)
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(More)
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 48.5 years (range,20 to 75 years). Single(More)
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(More)
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(More)