Navigated pedicle screw insertion with the Surgivisio system: Malposition rate and risk factors - about 648 screws.

Purpose: Pedicle screw malposition rates vary greatly in scientific literature depending on the chosen criteria. Different techniques have been developed to lower the risk of screw malposition. Our primary objective is to evaluate the malposition rate associated with the use of the Surgivisio navigation system and to identify risk factors for screw malposition.

Fragility fractures of the pelvis: First 48 cases of surgical treatment at a level 1 trauma center in France.

Introduction: Longer life expectancy is accompanied by a higher incidence of fragility fractures of the pelvis (FFP), which has repercussions on mortality and nursing home admissions. Given the paucity of data at French healthcare facilities, we carried out a retrospective study to (1) evaluate how surgical treatment of FFP with posterior displacement (type III and IV according to Rommens and Hofmann) affects a patient's pain, functional status and ability to stay at home and (2) evaluate the postoperative complications and mortality rate.

Hypothesis: Surgery for posteriorly displaced FFP will relieve pain and preserve the patient's independence.

Navigated Cementoplasty With O-Arm and Surgivisio: An Ambispective Comparison With Radiation Exposure.

Background: Vertebral compression fractures (VCF) are usually treated by cementoplasty. Computerized navigation allows more accurate surgery without additional imaging acquisition for guidance and related radiation exposure. New technologies trend to optimize the irradiation for patients and surgeons.

Clinical and radiological outcomes of antegrade posterior column screw fixation of the acetabulum.

Introduction: Antegrade posterior column screw fixation (APCS) provides stable fixation while reducing the complications related to dual acetabular approaches. The objective of this study was to present the radiological and clinical outcomes of fixation of the posterior column of the acetabulum through a single anterior approach.

Hypothesis: APCS will produce better clinical and radiological outcomes relative to not placing any screws in the posterior column.

Screw misplacement in percutaneous posterior pelvic iliosacral screwing with and without navigation: A prospective clinical study of 174 screws in 127 patients.

Background: Recent studies of iliosacral screw fixation performed using intraoperative navigation systems have shown promising results. The Surgivisio Platform is a new-generation three-dimensional intraoperative navigation tool that has been used at our institution for 2years. The aim of this prospective study was to assess the contribution of navigation in terms of iliosacral screw positioning accuracy and of radiation exposure, by comparing outcomes with vs.

Does intraoperative 3D navigation improve SpineJack vertebral augmentation in thoracic and lumbar compression fracture?

Introduction: The aim of this retrospective study was to evaluate the effect of navigation on the positioning of the SpineJack implant in the treatment of thoracic and lumbar compression fractures.

Methods: Between January 2018 and December 2019, all patients operated on for thoracic or lumbar fracture using the SpineJack device in stand-alone were included in this single-center study. The positioning of the SpineJack implant was analyzed on axial CT views by measuring the angle between the axis of the pedicle and the axis of the final implant.

Complications and outcomes in 69 consecutive patients with floating hip.

Background: Floating hip is a rare and potentially serious injury. The objective of this study was to evaluate our management strategy for patients with floating hip.

Hypothesis: A standardized strategy with specialised multidisciplinary management is associated with a low mortality rate.

EOS stereographic assessment of femoral shaft malunion after intramedullary nailing. A prospective series of 48 patients at 9 months' follow-up.

Introduction: The aim of the present study was to assess femoral shaft malunion following anterograde intramedullary nailing, using low-dose EOS stereoradiography. The study hypothesis was that our surgical technique is associated with radiological rotation disorder rates equivalent to those reported in the literature.

Methods: All patients with unilateral femoral shaft fracture treated by anterograde nailing between January 2014 and December 2016 and followed up in our structure were included in a single-center prospective study.

3D-imaging in percutaneous spine surgery using the Surgivisio system.

The Surgivisio system is a new generation of intraoperative 3D imaging, used in our institution for pedicle insertion in minimally invasive spine surgery since January 2018. The purpose of this technical note is to describe the Surgivisio system, its advantages and its limitations, in percutaneous spinal surgery. Results of the first year of use were analyzed, in a series of 29 patients, to evaluate accuracy of pedicle screw insertion, operative time and radiation exposure.

Tuberosity healing in reverse shoulder arthroplasty in traumatology: Use of an offset modular system with bone graft.

Introduction: Reverse shoulder arthroplasty (RSA) has become a common treatment in displaced proximal humeral fracture (PHF) in elderly patients due to inconstant results with osteosynthesis or hemiarthroplasty. RSA allows a good anterior elevation but rotational results are more random and depend on tuberosity healing.

Hypothesis: Use of an offset modular system (OMS) on the prothesis improve tuberosity healing and functional results.

Role of 3D intraoperative imaging in orthopedic and trauma surgery.

Intraoperative three-dimensional (3D) imaging is now feasible because of recent technological advances such as 3D cone-beam CT (CBCT) and flat-panel X-ray detectors (FPDs). These technologies reduce the radiation dose to the patient and surgical team. The aim of this study is to review the advantages of 3D intraoperative imaging in orthopedic and trauma surgery by answering the following 5 questions: What are its technical principles? CBCT with a FPD produces non-distorted digital images and frees up the surgical field.

Clinical and radiological outcomes in thoracolumbar fractures using the SpineJack device. A prospective study of seventy-four patients with a two point three year mean of follow-up.

Purpose: The aim of this study was to assess clinical and radiological results of SpineJack on the treatment of vertebral body fractures in a continuous prospective series of patients.

Material And Methods: Between May 2012 and April 2015, all patients operated using the SpineJack device were prospectively included in this monocentric study. Demographic data, clinical, and radiological results were recorded.

Posterior transiliac plating in vertically unstable sacral fracture.

The aim of the present technical note is to describe the posterior transiliac plating method. Acute-phase clinical and radiological results in a continuous series of 10 vertically unstable fractures are presented. Reduction was good or excellent in 70% of cases, and clinical results were good or excellent in 80% on Hannover and Majeed scores, with mean Majeed score of 71.

Operative versus non-operative treatment of displaced acetabular fractures in elderly patients.

Background: Acetabular fracture treatments in elderly patients are not well codified.

Purpose: The aim of the study was to determine if, for active elderly patients, the clinical results after surgical treatment of displaced acetabular fractures are better than for non-operative treatment.

Methods: All active patients over 60 years with a Parker score higher than 6, managed for displaced acetabular fracture between 2005 and 2014, were included in this single-center retrospective study.

Effectiveness of closed reduction and percutaneous fixation of isolated sacral fractures. Functional outcomes and sagittal alignment after 3.6 years in 20 patients.

Background: Displaced U- or H-shaped sacral fractures (Roy-Camille Grade II or III) are treated at our institution by early transcondylar traction and manual countertraction, hyperlordosis induced by a pad positioned under the lumbo-sacral junction, and percutaneous ilio-sacral screw fixation. The objective of this study was to evaluate the outcome of this technique used in a level 1 trauma centre. Hypothesis Our early reduction technique provides anatomical reduction of U- or H-shaped sacral fractures by correcting the sagittal malalignment due to the intra-sacral kyphosis, thereby obviating the need for decompression laminectomy and improving neurological outcomes.

Early versus delayed corpectomy in thoracic and lumbar spine trauma. A long-term clinical and radiological retrospective study.

And Background Data: Many authors have demonstrated the necessity of reconstruction of the anterior column in spinal trauma with vertebral body collapse or nonunion. There is no publication comparing the result depending on the time between trauma and anterior reconstruction of the vertebral body.

Objective: To compare long-term clinical and radiological results between early and late anterior vertebral body reconstruction with expandable cages in patients with thoracic and lumbar spine trauma.

Outcomes of acetabular fractures in the elderly: a five year retrospective study of twenty seven patients with primary total hip replacement.

Purposes: Open reduction and internal fixation (ORIF) in osteoporotic acetabular fractures is quite difficult with high risk of implant failure. Total hip arthroplasty (THA) may be an effective option for treating acetabular fractures in appropriately selected patients, with immediate full weightbearing. The aim of the study was to evaluate the functional outcomes of primary THA for acetabular fractures in elderly patients.

Total Talar Prosthesis Replacement after Talar Extrusion.

Dislocation of the talus is a serious and extremely rare injury, with 86 cases reported in the published data in 20 years. The reference standard for case management involves replacement of the dislocated talus to restore the height and function of the tibiotalar joint. The risk of avascular necrosis remains very high, and the standard treatment in such cases is tibiotalar arthrodesis.

Part 2: outcome of acetabular fractures and associated prognostic factors-a ten-year retrospective study of one hundred and fifty six operated cases with open reduction and internal fixation.

Questions/purposes: The aim of this study was to identify prognostic factors associated with a poor quality of reduction and their relationships.

Methods: Data from medical charts for all patients admitted with acetabular fractures operated by open reduction and internal fixation (ORIF) from 2005 to 2014 were extracted. A total of 156 patients with a mean age of 40.