scholarly journals 2272. Evaluation of Clinical Features, Carbapenem Resistance and Risk Factors of Klebsiella Species: A 4-Year Retrospective Study in Turkey

2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S777-S778
Author(s):  
Zuhal Umit ◽  
Zumrut Sahbudak Bal ◽  
Gizem Guner ◽  
Gulhadiye Avcu ◽  
Duygu Bozkurt ◽  
...  
Keyword(s):  
Risk Factors ◽  
Hospital Stay ◽  
Significant Risk ◽  
Carbapenem Resistance ◽  
Steroid Use ◽  
Carbapenem Resistant ◽  
Vitek 2 ◽  
The Mean ◽  
Klebsiella Spp ◽  
Klebsiella Infections

Abstract Background Gram-negative-resistant bacterial infections are increasing due to widespread use of antibiotics. Infections caused by Klebsiella spp. are an important part of healthcare-associated infections and cause morbidity and mortality. The aim of this study was to determine the epidemiological, clinical features, carbapenem resistance rates and risk factors of bloodstream infections of children with Klebsiella spp. Methods In this retropective study, medical records of 85 episodes of 75 patients caused by with Klebsiella spp. bacteriaemia who admitted to Ege University Faculty of Medicine, Pediatric Hospital in Turkey between 2014 and 2017 were evaluated. Conventional biochemical methods were performed using the automated systems of MALDİ-TOFF MS / VITEK 2 (Biomerieux, France). According to EUCAST recommendations, VITEK 2 (Biomerieux, France) automated microdilution method was used in sensitivity tests. Results The mean age of 85 episodes included in the study was 3.49 (±5.4) years. 58% of the patients were male and 42% were female. 18.8% of the patients were premature. The most common service was newborn service (30.6%). Neutropenia was 26% and thrombocytopenia was 55% at the time of diagnosis. Klebsiella pneumonia was 93% and Klebsiella oxytoca was 7%. Carbapenem resistance rate was found to be 30.6% in Klebsiella spp. Carbapenem resistance was found 18% in 2014, 38% in 2015, 42% in 2016 and 25% in 2017. In patients who developed carbapenem-resistant Klebsiella infection, the duration of pre-hospitalization ≥14 days (P = 0.034), the absolute neutrophil count < 100 (P = 0.048) and steroid use (P = 0.025) were statistically significant risk factors. The mean length of hospital stay was 107 (±103) days. Klebsiella spp. attributable mortality due to infection was 14% and crude mortality was 15%. No statistically significant difference was found in patients who developed resistant and susceptible infections. Conclusion Carbapenem resistance in Klebsiella infections was increased. Prolonged hospital stay, neutropenia and steroid use in the last 3 months were identified as significant risk factors for carbapenem-resistant Klebsiella infections. Disclosures All authors: No reported disclosures.

scholarly journals Emergence of carbapenem-resistant Klebsiella spp. infections in a Turkish university hospital: epidemiology and risk factors

2014 ◽  
Vol 8 (01) ◽  
pp. 044-049 ◽  
Author(s):  
Murat Dizbay ◽  
Ozlem Guzel Tunccan ◽  
Omer Karasahin ◽  
Firdevs Aktas
Keyword(s):  
Risk Factors ◽  
Significant Risk ◽  
Carbapenem Resistance ◽  
University Hospital ◽  
H2 Receptor Antagonist ◽  
H2 Receptor ◽  
Carbapenem Resistant ◽  
Tract Infections ◽  
Resistance Rates ◽  
Klebsiella Spp

Introduction:Risk factors for nosocomial carbapenem-resistant Klebsiella spp. (CRK) infections were analyzed in this study.Methodology:The incidence, clinical characteristics, risk factors, antimicrobial susceptibility, and outcomes of CRK infections during a seven-year period (2004-2010) were retrospectively analyzed.Results:A total of 720 patients were included in the study. Carbapenem resistance among Klebsiella spp. were significantly increased between 2003 and 2007 (p<0.001). CRK strains were mostly isolated from ICUs (p<0.001). Use of imipenem and cefoperazone-sulbactam within prior three months, stay in ICU, receiving immunspressive therapy, receiving H2 receptor antagonists, tracheostomy, mechanical ventilation, hemodialysis, urinary catheter were found to be significant risk factors for carbapenem resistance Klebsiella spp. infections. In a multivariate analysis, prior use of imipenem (OR 3.35; CI 1.675-6.726, p<0.001), stay in ICU (OR 3.36; 95% CI 1.193-9.508; p=0.022), receiving H2 receptor antagonist (OR 4.49; 95% CI 1.011-19.951; p=0.048) were independently associated with carbapenem resistance. Respiratory tract infections were the most seen nosocomial infection. Attack mortality rate was significantly higher in patients infected with CRK strains (p<0.001). CRK strains showed significantly higher resistance rates to other antibiotics.Conclusions:In conclusion, the emergence and rapid spread of CRK strains in our hospital is worrisome. The patients in ICU are most important risk group for the acquisition of CRK strains. High resistant rates to other antibiotics except than colistin and tigecycline limits therapeutic options, and increases mortality rates.

scholarly journals The Epidemiology of Carbapenem-Resistant Klebsiella pneumoniae Colonization and Infection among Long-Term Acute Care Hospital Residents

2015 ◽  
Vol 37 (1) ◽  
pp. 55-60 ◽  
Author(s):  
John P Mills ◽  
Naasha J Talati ◽  
Kevin Alby ◽  
Jennifer H Han
Keyword(s):  
Risk Factors ◽  
Klebsiella Pneumoniae ◽  
Acute Care ◽  
Significant Risk ◽  
Acute Care Hospital ◽  
Carbapenem Resistance ◽  
Solid Organ ◽  
Care Hospital ◽  
Carbapenem Resistant

OBJECTIVEAn improved understanding of carbapenem-resistant Klebsiella pneumoniae (CRKP) in long-term acute care hospitals (LTACHs) is needed. The objective of this study was to assess risk factors for colonization or infection with CRKP in LTACH residents.METHODSA case-control study was performed at a university-affiliated LTACH from 2008 to 2013. Cases were defined as all patients with clinical cultures positive for CRKP and controls were those with clinical cultures positive for carbapenem-susceptible K. pneumoniae (CSKP). A multivariate model was developed to identify risk factors for CRKP infection or colonization.RESULTSA total of 222 patients were identified with K. pneumoniae clinical cultures during the study period; 99 (45%) were case patients and 123 (55%) were control patients. Our multivariate analysis identified factors associated with a significant risk for CRKP colonization or infection: solid organ or stem cell transplantation (OR, 5.05; 95% CI, 1.23–20.8; P=.03), mechanical ventilation (OR, 2.56; 95% CI, 1.24–5.28; P=.01), fecal incontinence (OR, 5.78; 95% CI, 1.52–22.0; P=.01), and exposure in the prior 30 days to meropenem (OR, 3.55; 95% CI, 1.04–12.1; P=.04), vancomycin (OR, 2.94; 95% CI, 1.18–7.32; P=.02), and metronidazole (OR, 4.22; 95% CI, 1.28–14.0; P=.02).CONCLUSIONSRates of colonization and infection with CRKP were high in the LTACH setting, with nearly half of K. pneumoniae cultures demonstrating carbapenem resistance. Further studies are needed on interventions to limit the emergence of CRKP in LTACHs, including targeted surveillance screening of high-risk patients and effective antibiotic stewardship measures.Infect. Control Hosp. Epidemiol. 2015;37(1):55–60

Characterizing the Magnitude of and Risk Factors for Functional Limb Lengthening in Patients Undergoing Primary Total Knee Arthroplasty

2021 ◽  
pp. 155633162110091
Author(s):  
Brian P. Chalmers ◽  
Mark LaGreca ◽  
Jacqueline Addona ◽  
Peter K. Sculco ◽  
Steve B. Haas ◽  
...  
Keyword(s):  
Risk Factors ◽  
Total Knee Arthroplasty ◽  
Significant Risk ◽  
Primary Total Knee Arthroplasty ◽  
Limb Lengthening ◽  
Leg Lengthening ◽  
Total Knee ◽  
Plane Deformity ◽  
The Mean ◽  
Primary Total Knee

Background: There is little data on the magnitude and factors for functional leg lengthening after primary total knee arthroplasty (TKA). Questions/Purpose: We sought to determine the incidence of and risk factors for functional leg lengthening after primary TKA. Methods: We retrospectively reviewed consecutive unilateral primary TKAs at a single institution from 2015 to 2018. Of the 782 TKAs included, 430 (55%) were performed in women; the mean age was 66 years, and the mean body mass index was 29 kg/m2. Preoperatively, 541 (69%) knees were varus deformities and 223 (29%) were valgus deformities. Hip to ankle biplanar radiographs were obtained preoperatively and 6 weeks postoperatively for all patients. Two independent researchers measured leg length, coronal plane deformity, lateral knee flexion angle, and overall mechanical alignment on all preoperative and postoperative radiographs. Results: The mean overall ipsilateral functional leg lengthening was 7.0 mm. Seven hundred knees (90%) were overall functionally lengthened, including 462 (59%) knees lengthened >5 mm and 250 (31%) knees lengthened 10 mm or more. A valgus deformity and coronal plane deformity of 10° or more were significant risk factors for increased functional lengthening. Patients with severe valgus deformities (>10°) had the largest amount of functional lengthening, at a mean of 13.5 mm. Conclusion: After primary TKA, 90% of limbs are functionally lengthened, including roughly one-third over a centimeter. Valgus knee deformities and severe deformities (>10°) were significant risk factors for increased limb lengthening.

scholarly journals Differences in Risk Factors for Retinopathy of Prematurity Development in Paired Twins: A Chinese Population Study

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Gordon S. K. Yau ◽  
Jacky W. Y. Lee ◽  
Victor T. Y. Tam ◽  
Stan Yip ◽  
Edith Cheng ◽  
...  
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Retinopathy Of Prematurity ◽  
Very Low Birth Weight ◽  
Significant Risk ◽  
The Mean ◽  
Record Review ◽  
Chinese Twins ◽  
Retrospective Medical Record Review

Purpose.To determine the differences in risk factors for retinopathy of prematurity (ROP) in paired twins.Methods.A retrospective medical record review was performed for all paired twins screened for ROP between 2007 and 2012. Screening was offered to very low birth weight (≤1500 grams) and preterm (≤32 weeks) neonates. Twins 1 and 2 were categorized based on the order of delivery. Maternal and neonatal covariates were analyzed using univariate and multivariate regression analyses for both ROP and Type 1 ROP.Results.In 34 pairs of Chinese twins, the mean gestational age (GA) was 30.2 ± 2.0 weeks. In Twin 1, smaller GA (OR = 0.44,P=0.02), higher mean oxygen concentration (OR = 1.34,P=0.03), presence of thrombocytopenia (OR = 1429.60,P<0.0001), and intraventricular hemorrhage (OR = 18.67,P=0.03) were significant risk factors for ROP. For Twin 2, a smaller GA (OR = 0.45,P=0.03) was the only risk factor. There were no significant risk factors for ROP in Twin 1 or Twin 2 on multivariate analysis.Conclusion.In Chinese twin pairs, smaller GA was the only common risk factor for ROP while Twin 1 was more susceptible to the postnatal risks for ROP.

Abstract 2877: Ultra-early Endovascular Embolization Of Ruptured Cerebral Aneurysms Increases The Risk Of Hematoma Growth Unrelated To Aneurysmal Rebleeding

Stroke ◽  
2012 ◽  
Vol 43 (suppl_1) ◽  
Author(s):  
Yusuke Egashira ◽  
Shinichi Yoshimura ◽  
Yukiko Enomoto ◽  
Kiyofumi Yamada ◽  
Takahiko Asano ◽  
...  
Keyword(s):  
Risk Factors ◽  
Significant Risk ◽  
Cerebral Aneurysms ◽  
Female Gender ◽  
Endovascular Embolization ◽  
Anterior Circulation ◽  
Hematoma Growth ◽  
Group 3 ◽  
The Mean ◽  
Systemic Anticoagulation

Background and purpose: Hematoma growth unrelated to aneurysmal rebleeding has been poorly studied, but is not a rare complication following endovascular embolization of ruptured cerebral aneurysms. The aim of this study is to elucidate the possible risk factors for this phenomenon. Methods: We included 101 consecutive patients with subarachnoid hemorrhage (SAH) who underwent endosaccular embolization at our institution within 72 hours of symptom onset in this study. All endovascular procedures were conducted under intraprocedural systemic anticoagulation. Age, gender, hypertension, diabetes, preoperative antiplatelet or anticoagulation use, neurological grade, Fisher computed tomography group, location and size of the aneurysm, the grade of aneurysm occlusion, and timing of endovascular procedure were retrospectively analyzed to find the risk factors for hematoma growth. Results: This series included 32 men (31.7%) and 69 women (68.3%), and the mean age ± SD was 65.5 ± 14.0 years. The mean time ± SD from onset to endovascular procedure was 12.1 ± 14.0 hours. Following the procedure, hematoma growth unrelated to aneurysmal rebleeding occurred in 14 patients (13.9%), and 10 of the 14 patients required surgical removal of hematoma and/or ventriculostomy to control intracranial pressure. All 14 patients had an anterior circulation aneurysm and had Fisher group 3 or 4 SAH. Ultra-early embolization (conducted within 6 hours after onset), female gender, history of hypertension, and poor neurological grade (WFNS grades 4 and 5) were significant risk factors of hematoma growth (p < 0.05 for all) by the univariate logistic analysis. In multivariate analysis, ultra-early embolization (OR, 18.0; 95% CI, 3.26-338; p = 0.0002), and female gender (OR, 9.83; 95% CI, 1.73-187; p = 0.0067) were independent risk factors for this phenomenon. Anterior circulation aneurysm and Fisher group 3 or 4 SAH did not suit for the logistic regression model, but were found to be significant risk factors by chi-square test (p = 0.018 and 0.022, respectively). Conclusions: Ultra-early endovascular embolization for ruptured cerebral aneurysm under systemic anticoagulation increases the risk of growth of hematomas unrelated to aneurysmal rebleeding. In addition, women with anterior circulation aneurysm presenting with dense focal SAH or intracerebral hematoma are at higher risk for this phenomenon.

scholarly journals Extrusion of Femtosecond Laser-Implanted Intrastromal Corneal Ring Segments in Keratoconic Eyes: Prevalence, Risk Factors, and Clinical Outcomes

2020 ◽  
Vol 2020 ◽  
pp. 1-7 ◽  
Author(s):  
Amr Mounir ◽  
Mahmoud Mohamed Farouk ◽  
Marwa Mahmoud Abdellah ◽  
Engy Mohamed Mostafa
Keyword(s):  
Risk Factors ◽  
Femtosecond Laser ◽  
Corneal Thickness ◽  
Significant Risk ◽  
Sun Exposure ◽  
Vernal Keratoconjunctivitis ◽  
Conjunctival Hyperemia ◽  
Intrastromal Corneal Ring ◽  
The Mean ◽  
Belo Horizonte

Purpose. To evaluate the prevalence, possible risk factors, and clinical results of femtosecond laser implanted intrastromal corneal ring segment (ICRS) extrusion in keratoconic eyes. Patients and Methods. This is a retrospective observational study evaluating 333 eyes of 269 patients who were subjected to femtosecond laser-implanted Keraring ICRS in the Sohag Refractive Center, Sohag, Egypt, from January 2014 to January 2019. The study included eyes with channels created by a femtosecond laser (60 kHz IntraLase femtosecond system; Advanced Medical Optics, Santa Ana, California, USA) with implantation of Keraring intrastromal corneal ring segments (Mediphacos, Belo Horizonte, Brazil). Patient data and causes of Keraring extrusions were identified as being those rings that migrated or showed melting of the cornea with no other reason which required segment removal. Results. Seven eyes were found to fit the criteria of ring extrusion (2.1%) out of the 333 eyes which had Keraring implantation. All extruded rings were from patients with keratoconus grade 3, with eccentric cones, and with femtosecond creation of the tunnel. Four eyes belonging to 3 patients (57.1%) had a history of vernal Keratoconjunctivitis, yet they did not show signs of activity at the time of implantation. They reported excessive rubbing just before they presented with conjunctival hyperemia and foreign body sensation. Five eyes (71.4%) showed chronic sun exposure. The mean minimal corneal thickness was 401.85 μm (range 384–420 μm), while the mean maximum keratometry was 61 D (range 55.18–68.96 D). Most of the extruded rings had large arcs. Six eyes had crosslinking (CXL) at the same session of the Keraring implantation. The simultaneous CXL treatment is considered as a possible significant risk factor for ring extrusion. Conclusion. ICRS is an effective reversible option for patients with keratoconus who are intolerant to hard contact lenses, yet the choice of cases and ring segments is mandatory for satisfactory results. Moreover, meticulous history taking and examination reduces the incidence of complications including extrusion.

Long Term Follow-Up of Pediatric Sickle Cell Disease Patients with Conditional Velocities on Transcranial Doppler (TCD).

Blood ◽  
2005 ◽  
Vol 106 (11) ◽  
pp. 2338-2338
Author(s):  
Lena Coïc ◽  
Suzanne Verlhac ◽  
Emmanuelle Lesprit ◽  
Emmanuelle Fleurence ◽  
Francoise Bernaudin
Keyword(s):  
Risk Factors ◽  
Color Doppler ◽  
Significant Risk ◽  
Biological Data ◽  
Treatment Intensification ◽  
Significant Difference ◽  
History Of ◽  
The Mean

Abstract Abnormal TCD defined as high mean maximum velocities &gt; 200 cm/sec are highly predictive of stroke risk and justify long term transfusion program. Outcome and risk factors of conditional TCD defined as velocities 170–200 cm/sec remains to be described. Patients and methods Since 1992, 371 pediatric SCD patients (303 SS, 44 SC, 18 Sß+, 6 Sß0) were systematically explored once a year by TCD. The newborn screened cohort (n=174) had the first TCD exploration between 12 and 18 months of age. TCD was performed with a real-time imaging unit, using a 2 MHz sector transducer with color Doppler capabilities. Biological data were assessed at baseline, after the age of 1.5 years and remotely of transfusion or VOC. We report the characteristics and the outcome in patients (n=43) with an history of conditional TCD defined by mean maximum velocities ranging between 170 and 200 cm/s in the ACM, the ACA or the ICA. Results: The mean follow-up of TCD monitoring was 5,5 years (0 – 11,8 y). All patients with an history of conditional doppler were SS/Sb0 (n=43). Mean (SD) age of patients at the time of their first conditional TCD was 4.3 years (2.2) whereas in our series the mean age at abnormal TCD (&gt; 200 cm/sec) occurrence was 6.6 years (3.2). Comparison of basal parameters showed highly significant differences between patients with conditional TCD and those with normal TCD: Hb 7g4 vs 8g5 (p&lt;0.001), MCV 82.8 vs 79 (p=0.047). We also had found such differences between patients with normal and those with abnormal TCD (Hb and MCV p&lt; 0.001). Two patients were lost of follow-up. Two patients died during a trip to Africa. Conditional TCD became abnormal in 11/43 patients and justified transfusion program. Mean (SD) conversion delay was 1.8 (2.0) years (range 0.5–7y). No stroke occurred. 16 patients required a treatment intensification for other indications (frequent VOC/ACS, splenic sequestrations): 6 were transplanted and 10 received HU or TP. Significant risk factors (Pearson) of conversion to abnormal were the age at time of conditional TCD occurrence &lt; 3 y (p&lt;0.001), baseline Hb &lt; 7g/dl (p=0.02) and MCV &gt; 80 (p=0.04). MRI/MRA was performed in 31/43 patients and showed ischemic lesions in 5 of them at the mean (SD) age of 7.1 y (1.8) (range 4.5–8.9): no significant difference was observed in the occurrence of lesions between the 2 groups. Conclusions This study confirms the importance of age as predictive factor of conditional to abnormal TCD conversion with a risk of 64% when first conditional TCD occured before the age of 3 years. TCD has to be frequently controled during the 5 first years of life.

scholarly journals Pattern of growth development of premature children at the age of two and three years in Alexandria, Egypt [Part II]

2021 ◽  
Vol 1 (2) ◽  
pp. 186-193
Author(s):  
Khadiga A. Khalil ◽  
Shahira M. El Amrawy ◽  
Afaf G. Ibrahim ◽  
Nadia A. El Zeiny ◽  
Azza E. Greiw
Keyword(s):  
Risk Factors ◽  
Educational Level ◽  
Growth And Development ◽  
Significant Risk ◽  
Premature Child ◽  
Chronic Nephritis ◽  
The Mean ◽  
Growth Development ◽  
Premature Children ◽  
Age And Sex

Thisis the second part of a paper on a study conducted in Alexandria on 68 premature children. Controls were full-term children, double the number of prematures, and matched by age and sex. The first part presented differences in growth and development in relation to prematurity. This part deals with risk factors for prematurity. The study revealed that low educational level of fathers and parental smoking were significant risk factors for prematurity. The mean age of both parents and mothers’ gravidity were significantly higher for prematures. Other risk factors were identified. Mothers with diabetes and chronic nephritis were more likely to have a premature child

scholarly journals Risk Factors for rectal colonization with carbapenem-resistant Acinetobacter baumannii in hospital: a matched case-control study

2021 ◽  
Author(s):  
marianna meschiari ◽  
Shaniko Kaleci ◽  
Gabriella Orlando ◽  
Silvia Selmi ◽  
Antonella Santoro ◽  
...  
Keyword(s):  
Risk Factors ◽  
Multivariate Analysis ◽  
Acinetobacter Baumannii ◽  
Case Control Study ◽  
Significant Risk ◽  
Case Control ◽  
Carbapenem Resistant ◽  
Matched Case ◽  
Matched Case Control Study ◽  
Control Study

Abstract Background During the last decade carbapenem-resistant Acinetobacter baumannii (CRAB) became hyper-endemic in hospitals due to difficult to control spreading. Our aim is to identify risk factors for nosocomial rectal CRAB colonization in an endemic hospital. Methods A retrospective matched case-control study (ratio 1:2) with a prospective inclusion of cases and concurrent selection of controls was conducted from January 2017 to December 2018 in a tertiary-care hospital. Universal active surveillance for CRAB was implemented. Univariate and multivariate logistic regression was carried out using a stepwise selection method to compare prognostic factors between cases and controls. A sub-analysis was carried out according to the type of department. Results Forty-five cases with nosocomial rectal CRAB colonization and 90 controls were included. One hundred and two (75%) patients were hospitalized in medical departments. At multivariable analysis significant risk factors associated with CRAB colonization were: use of permanent devices (OR: 10.15, 95%CI: 2.27–45.39; P = 0.002), mechanical ventilation (OR: 40.01, 95%CI: 4.05–395.1; P = 0.002), urinary catheters (OR: 4.9, 95%CI:1.52–16.19; P = 0.008), McCabe score (OR: 5.45, 95%CI: 1.87–15.89; P = 0.002), length of stay (OR: 1.03, 95%CI: 1.01–1.05; P = 0.002), carbapenem use (OR: 5.39, 95%CI: 1.14–25.44; P = 0.033). The sub-analysis showed that patients admitted to different departments had different risk factors. In geriatric department a fatal disease and a longer hospital stay represented significant risk factors both in univariate and multivariate analysis, while in internal medicine department the use of permanent devices, current antibiotic therapy and antibiotic polytherapy represented significant risk factors for CRAB at the univariate analysis, also confirmed in multivariate analysis. Conclusions Our data suggest that active surveillance for rectal CRAB colonization should be addressed to patients with an unfavourable prognosis, longer hospitalizations and carriers of multiple devices. To counter CRAB spreading in endemic settings, clinicians must limit the use of carbapenems, and reinforce interventions aimed at proper use of devices.

scholarly journals Risk Factors for Recurrent Syndesmotic instability after Syndesmotic Screw Fixation in Rotational Ankle Fractures

2019 ◽  
Vol 4 (4) ◽  
pp. 2473011419S0004
Author(s):  
Sunghyun Lee ◽  
Hoiyoung Kwon
Keyword(s):  
Risk Factors ◽  
Screw Fixation ◽  
Significant Risk ◽  
Ankle Fractures ◽  
Binary Logistic Regression Analysis ◽  
Malleolar Fracture ◽  
Syndesmotic Screw ◽  
Posterior Malleolar Fracture ◽  
The Mean ◽  
Recurrence Group

Category: Ankle Introduction/Purpose: Rotational ankle fractures often have unstable syndesmotic injuries the require reduction and stabilization. Though multiple studies have focused on methods to assess accurate syndesmotic reduction, fairly high rates of recurrent syndesmosis diastasis were reported. However, there was no study to investigate possible risk factors for syndesmosis widening after surgical fixation. The purpose of this study was to identify the risk factors for recurrent syndesmosis widening after screw fixation. We hypothesized that risk factors for recurrence syndesmosis widening could be identified from patient demographic, intraoperative variables and the extent of the pathologic condition associated with fractures. Methods: We performed a retrospective review between 2009 and 2015 of consecutive patients who had sustained rotational ankle fractures with intraoperative evidence of syndesmotic instability requiring syndesmotic reduction and stabilization. The exclusion criteria included syndesmosis screws placed for diabetic neuropathy, skeletal immaturity, tibial pilon fractures, polytrauma, open fracture. Patients were sorted into 2 groups according to the presence of recurrent syndesmosis instability which was defined as a difference in the tibiofibular distance of =2 mm between the injured and uninjured ankles on CT at postoperative 1 year and a positive external rotation test. Furthermore, the statistical analysis by binary logistic regression analysis included the significance of various risk factors including age at surgery, sex, diabetes, smoking, body mass index (BMI), dominant side, type of fracture, associated fracture, initial tibiofibular distance on CT, number and size of screws, cortices. The functional outcomes were assessed with the Foot and Ankle Outcome Score (FAOS). Results: A total 126 patients met the study inclusion criteria and underwent analysis. The overall postoperative recurrent instability rate was 25.4% (without recurrence group: 94 patients, recurrence group: 32). It was significantly affected by the BMI (p=0.018; adjusted odds ratio, OR, = 30, 6.21) and concomitant posterior malleolar fracture (p=0.040, adjusted OR 3.31). The other variables were not found to be significant risk factors. There was a significant improvement in the mean clinical scores at one years postoperatively (both p < 0.001), but the mean scores in the group with recurrence were significantly lower than those in the group without recurrence (p=0.021) Conclusion: Among the risk factors, obesity and concomitant posterior malleolar fracture were significant risk factors for the recurrent syndesmotic instability after syndesmotic screw fixation. The overall results suggest meticulous attention to concomitant posterior malleolar fracture, especially in obese patients.

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