This report is being filed after the review of the following journal article: moser m., jost j., and nevzati e.(2021), kyphoplasty versus percutaneous posterior instrumentation for osteoporotic vertebral fractures with posterior wall injury: a propensity score matched cohort study, journal of spine surgery, vol.7 (1), pages 68-82 (switzerland).The aim of this retrospective, propensity score-matched cohort study is to evaluate our center¿s procedural data, surgical results, and perioperative complications in a cohort of patients with ovfs with posterior wall injury who underwent treatment with bkp with or without percutaneous posterior instrumentation.Between january 2010 to december 2018, a total of 50 patients (7 male and 43 female) with a mean age of 74.4±9.5 years, who underwent balloon kyphoplasty with or without percutaneous posterior instrumentation with pedicle screws, were included in the study.These patients were divided into 2 groups based on surgical treatment received.Percutaneous instrumentation was performed using viper® 2 (depuy synthes spine, oberdorf, switzerland) until 2015, and a competitor from 2016 to 2018.Bkp was performed using confidence spinal cement system® (depuy synthes spine, oberdorf, switzerland) and a competitor device.The average follow-up was 8.4 months (range, 1¿56.4 months).The following complications were reported as follows: bkp group: 6 patients developed a complication within 30 days after surgery, 4 of which required drug treatment due to urinary tract infection (n=1), hypokalemia (n=1), hypertensive crisis (n=1), and hypertensive crisis, hyperkalemia, and hyponatremia (n=1).1 patient had moderate complication (complicated urinary tract infection requiring suprapubic catheter) and 1 had a severe complication (acute pericarditis).13 patients had opioid use at discharge.2 patients were readmitted within 30-day.3 patients had opioid use at 3-month follow-up.11 patients had subsequent fractures within 3-month follow-up.4 patients showed fracture progression of the cement augmented level, which was managed conservatively in all cases.An unknown number of patients had an average loss of correction of 3.8° in the sagittal cobb angle, 2.8° in the vertebral wedge angle, and 2.2 mm in the anterior vertebral height.7 patients had cement leakage.Of these, 2 occurred intraspinally which was asymptomatic, and 5 ventrally or laterally confined to vertebral level.Ps group: 11 patients developed a complication within 30 days after surgery, 10 of which required drug treatment due to urinary tract infection (n=2), anemia requiring transfusion of red bloods cells (n=1), delirium (n=1), fluid overload and hyponatremia (n=1), pulmonary cement embolism (dyspnea) requiring anticoagulation, hyponatremia, hypokalemia, anemia requiring transfusion of red blood cells, urinary tract infection (n=1), pulmonary embolism (n=1), pulmonary embolism, delirium, pneumonia (n=1), urinary tract infection, hypokalemia (n=1), transient proximal muscle weakness in the right leg and subsequent fracture of lower instrumented vertebra (l4) (n=1).1 patient had moderate complication (obstructive micturation requiring suprapubic catheter).21 patients had opioid use at discharge.1 patient was readmitted within 30-day.4 patients had opioid use at 3-month follow-up.9 patients had subsequent fractures within 3-month follow-up.2 of these patients who received instrumentation two levels above and one level below the index level: one was managed conservatively, and another underwent revision surgery with caudal extension of the instrumentation 83 days after the index procedure.An unknown number of patients had an average loss of correction of 1.6° in the vertebral wedge angle, and 2.3 mm in the anterior vertebral height.11 patients had cement leakage.Of these, 9 occurred ventrally or laterally confined to vertebral level, 1 ventrally or laterally >1 level, and 1 occurred at the adjacent level.This report is for an unknown depuy spine viper 2 constructs and unknown depuy spine confidence cement.
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