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      Complications of percutaneous pedicle screw fixation in treating thoracolumbar and lumbar fracture

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          Abstract

          Percutaneous pedicle screw fixation (PPSF) has been a popular approach for treating thoracolumbar and lumbar fracture, and its relevant complications have been gradually recognized. This study aimed to summarize the complications of PPSF in treating thoracolumbar and lumbar fracture as well as the management and outcomes of the complications.

          We retrospectively analyzed the patients with thoracolumbar and lumbar fracture who were admitted to our department from February 2011 to February 2015 and underwent posterior PPSF. Information on demographics, medical comorbidities, radiographs, and treatment was obtained from hospital medical records and follow-up records. Main outcome indexes included adverse clinical and radiological outcomes during and after surgery.

          A total of 781 patients were included in this study. Forty-six patients (5.9%) presented with complications during or after surgery. The complications included intraoperative guide wire breakage, abdominal artery injury, spinal dura mater injury, postoperative pedicle screw misplacement, screw breakage, plug screw falling off, connecting rod loosening, poor reduction, and late infection. Among the 39 cases with postoperative complications, 14 underwent revision surgery, and the remaining patients underwent conservative treatment and presented good outcomes.

          PPSF is associated with the following complications: guide wire rupture, blood vessel injury, cerebrospinal fluid leakage, screw misplacement, poor reduction, failed internal fixation, and infection. A thorough preoperative evaluation, accurate operation, and timely and correct management of complications are critical to achieving satisfactory surgical outcomes.

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          Management of thoracolumbar spine fractures.

          Traumatic fractures of the spine are most common at the thoracolumbar junction and can be a source of great disability.
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            Complications associated with the technique of pedicle screw fixation. A selected survey of ABS members.

            A limited survey analysis of 617 surgical cases in which pedicle screw implants were used was undertaken to ascertain the incidence and variety of associated complications. The different implant systems used included variable spinal plating (n = 249), Edwards (n = 143), and AO fixateur interne (n = 101). The most common intraoperative problem was unrecognized screw misplacement (5.2%). Fracturing of the pedicle during screw insertion and iatrogenic cerebrospinal fluid leak occurred in 4.2% of cases. The postoperative deep infection rate was 4.2%. Transient neuropraxia occurred in 2.4% of cases, and permanent nerve root injury occurred in 2.3% of cases. Previously unreported injury to nerve roots occurred late in the postoperative course in three cases. Screw breakage occurred in 2.9% of cases. All other complications had an incidence of less than 2%. The authors conclude that pedicle screw placement may be associated with significant intraoperative and postoperative complications. This information is of value to surgeons using pedicle implant systems as well as to their patients. Repeat surgery is associated with greater numbers of complications.
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              Clinical and radiological outcomes of open versus minimally invasive transforaminal lumbar interbody fusion.

              Prospective observational cohort study. Comparison of clinical and radiological outcomes of single-level open versus minimally invasive (MIS) transforaminal lumbar interbody fusion (TLIF) at 6 months and 2-year follow-up. There is recognition that more data are required to ascertain the benefits and risks of MIS vis-a-vis open TLIF. This study aims to report on one of the largest currently available series comparing the clinical and radiological outcomes of the two procedures with a minimum follow-up of 2 years. From January 2002 to March 2008, 144 single-level open and MIS TLIF were performed at our centre, with 72 patients in each group. Clinical outcomes were based on patient-reported outcome measures recorded at the Orthopaedic Diagnostic Centre by independent assessors before surgery, at 6 months and 2 years post-operatively. These were visual analogue scores (VAS) for back and leg pain, Oswestry disability index (ODI), short form-36 (SF-36), North American Spine Society (NASS) scores for neurogenic symptoms, returning to full function, and patient rating of the overall result of surgery. Radiological fusion based on the Bridwell grading system was also assessed at 6 months and 2 years post-operatively by independent assessors. In terms of demographics, the two groups were similar in terms of patient sample size, age, gender, body mass index (BMI), spinal levels operated, and all the clinical outcome measures (p > 0.05). Perioperative analysis revealed that MIS cases have comparable operative duration (open: 181.8 min, MIS: 166.4 min, p > 0.05), longer fluoroscopic time (open: 17.6 s, MIS: 49.0 s, p 50.0%) and similarly in terms of VAS, ODI, SF-36, return to full function and patient rating (p > 0.05). Radiological analysis showed similar grade 1 fusion rates (open: 52.2%, MIS: 59.4%, p > 0.05) with small percentage of patients developing asymptomatic cage migration (open: 8.7%, MIS: 5.8%, p > 0.05). One major complication (open: myocardial infarction, MIS: screw malpositioning requiring subsequent revision) and two minor complications in each group (open: pneumonia and post-surgery anemia, MIS: incidental durotomy and pneumonia) were noted. At 2 years, continued improvements were observed in both groups as compared to the preoperative state (p > 0.05), with 50.8% of open and 58% of MIS TLIF patients returning to full function (p > 0.05). Almost all patients have Grade 1 fusion (open: 98.5 %, MIS: 97.0%, p > 0.05) with minimal new cage migration (open: 1.4 %, MIS: 0%, p > 0.05). MIS TLIF is a safe option for lumbar fusion, and when compared to open TLIF, has similar operative duration, good clinical and radiological outcomes, with additional significant benefits of less perioperative blood loss and pain, earlier rehabilitation, and a shorter hospitalization.
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                Author and article information

                Journal
                Medicine (Baltimore)
                Medicine (Baltimore)
                MEDI
                Medicine
                Wolters Kluwer Health
                0025-7974
                1536-5964
                July 2018
                20 July 2018
                : 97
                : 29
                : e11560
                Affiliations
                Department of Spine Surgery, Honghui Hospital, Xi’an Jiaotong University Health Science Center, Xi’an City, Shanxi Province, China.
                Author notes
                []Correspondence: Dingjun Hao, Honghui Hospital, Xi’an Jiaotong University Health Science Center, Xi’an City, Shanxi Province, China (e-mail: haodingjundr@ 123456163.com ).
                Article
                MD-D-18-02168 11560
                10.1097/MD.0000000000011560
                6086516
                30024554
                e3a2c2cc-0b22-4813-a1d4-c299a8e21093
                Copyright © 2018 the Author(s). Published by Wolters Kluwer Health, Inc.

                This is an open access article distributed under the Creative Commons Attribution License 4.0 (CCBY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0

                History
                : 25 March 2018
                : 25 June 2018
                Categories
                7100
                Research Article
                Observational Study
                Custom metadata
                TRUE

                complications,minimally invasive,percutaneous pedicle screw,thoracolumbar and lumbar fracture

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