Alexander Joeris

Dr. Alexander Joeris

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Research Focus & Metrics

Academic Career Length

23Years (2004-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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9 November 2016 in BMC Musculoskeletal Disorders
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Journal Article
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MAMatheus Lemos Azi
Matheus Lemos Azi
AAAlessandro Aprato
Alessandro Aprato
ISIrene Santi
Irene Santi
MKMauricio Kfuri
Mauricio Kfuri
AMAlessandro Maria MASSE'
Alessandro Maria MASSE'
AJAlexander Joeris
Alexander Joeris
This meta-analysis aimed to determine the bone union rate of bone defects treated with the different autologous bone graft techniques. The PubMed and the Cochrane Library databases were searched using the terms: ‘fracture’ AND (‘bone loss’ OR ‘defect’ OR ‘defects’) AND ‘bone graft’, restricted to English language, to human species, and to a publication period from January 1999 to November 2014. Data were extracted by one of the reviewers and then checked by the second. A quality of evidence score and a methodology score were used. Heterogeneity was assessed. A random effects model approach was used to combine estimates. Out of 376 selected studies only 34 met the inclusion criteria. The summary pooled union rate was 91 % (95 % CI: 87–95 %) while union rate after additional procedures raised to 98 % (95 % CI 96–99 %). No association between union rate and bone defect size was found. (Univariable regression model: vascularized: P = 0.677; non-vascularized: 0.202. Multivariable regression model: vascularized: P = 0.381; non-vascularized: P = 0.226). Vascularized graft was associated with a lower risk of infection after surgery when compared to non-vascularized graft (95 % CI 0.03 to 0.23, p < 0.001). The results of this meta-analysis demonstrate the effectiveness of autologous graft for bone defects. Furthermore, from the available clinical evidence bone defect size does not seem to have an impact on bone union when treated with autologous bone graft techniques.

20 December 2014 in BMC Pediatrics
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Journal Article
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AJAlexander Joeris
Alexander Joeris
BNBugnon Nicolas
Bugnon Nicolas
BWBárbara Wicki
Bárbara Wicki
TSTheddy Slongo
Theddy Slongo
LALaurent Audigé
Laurent Audigé
Children and adolescents are at high risk of sustaining fractures during growth. Therefore, epidemiological assessment is crucial for fracture prevention. The AO Comprehensive Injury Automatic Classifier (AO COIAC) was used to evaluate epidemiological data of pediatric long bone fractures in a large cohort. Data from children and adolescents with long bone fractures sustained between 2009 and 2011, treated at either of two tertiary pediatric surgery hospitals in Switzerland, were retrospectively collected. Fractures were classified according to the AO Pediatric Comprehensive Classification of Long Bone Fractures (PCCF). Age, sex, BMI, injury and treatment data were recorded. Children were classified into four age classes and five BMI classes were applied. Seven major accident categories were established. Study parameters were tabulated using standard descriptive statistics. The relationship of categorical variables was tested using the chi-square test. The Children’s BMI was compared to WHO reference data and Swiss population data. For a total of 2716 patients (60% boys), 2807 accidents with 2840 long bone fractures (59% radius/ulna; 21% humerus; 15% tibia/fibula; 5% femur) were documented. Children’s mean age (SD) was 8.2 (4.0) years (6% infants; 26% preschool children; 40% school children; 28% adolescents). Adolescent boys sustained more fractures than girls (p < 0.001). The leading cause of fractures was falls (27%), followed by accidents occurring during leisure activities (25%), at home (14%), on playgrounds (11%), and traffic (11%) and school accidents (8%). There was boy predominance for all accident types except for playground and at home accidents. The distribution of accident types differed according to age classes (p < 0.001). Twenty-six percent of patients were classed as overweight or obese — higher than data published by the WHO for the corresponding ages — with a higher proportion of overweight and obese boys than in the Swiss population (p < 0.0001). Overall, differences in the fracture distribution were sex and age related. Overweight and obese patients seemed to be at increased risk of sustaining fractures. Our data give valuable input into future development of prevention strategies. The AO PCCF proved to be useful in epidemiological reporting and analysis of pediatric long bone fractures.

1 August 2017 in Injury
Verified
Journal Article
Closed access
AMAmir Matityahu
Amir Matityahu
RDRyan K. Duffy
Ryan K. Duffy
SGSabine Goldhahn
Sabine Goldhahn
AJAlexander Joeris
Alexander Joeris
PRPeter H. Richter
Peter H. Richter
FGFlorian Gebhard
Florian Gebhard

15 April 2015 in Journal of Bone and Joint Surgery
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FAFernando Brandao Andrade-Silva
Fernando Brandao Andrade-Silva
KKKodi Edson Kojima
Kodi Edson Kojima
AJAlexander Joeris
Alexander Joeris
JSJorge Santos Silva
Jorge Santos Silva
RMRames Mattar
Rames Mattar
Background: Previous studies have shown good clinical results in patients with midshaft clavicular fractures treated with reconstruction plate fixation or elastic stable intramedullary nailing. The objective of this study was to compare these methods in terms of clinical and radiographic results. Methods: In this prospective, randomized controlled trial, fifty-nine patients with displaced midshaft clavicular fractures were randomly assigned to receive fixation with either a reconstruction plate (thirty-three patients), known as the plate group, or elastic stable intramedullary nailing (twenty-six patients), known as the nail group. The primary outcome was the six-month Disabilities of the Arm, Shoulder and Hand (DASH) score. The secondary outcomes included the Constant-Murley score, time to fracture union, residual shortening, level of postoperative pain, percentage of satisfied patients, and complication rates. Results: The mean six-month DASH score was 9.9 points in the plate group and 8.5 points in the nail group (p = 0.329). Similarly, there were no differences in the twelve-month DASH and Constant-Murley scores. Time to union was equivalent (p = 0.352) between the groups at 16.8 weeks for the plate group and 15.9 weeks for the nail group, whereas the residual shortening was 0.4 cm greater in the plate group (p = 0.032). The visual analog scale pain score and the satisfaction rate were similar between the groups. Implant-related pain was more frequent in the nail group (p = 0.035). There were no differences in terms of major complications. Conclusions: Reconstruction plates and elastic stable intramedullary nailing yielded similar functional results, time to union, level of postoperative pain, and patient satisfaction rates. Both methods were safe in terms of major complications. Level of Evidence: Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.

1 August 2008 in Journal of Bone and Joint Surgery
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Journal Article
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TSTheddy Slongo
Theddy Slongo
TSTimo Schmid
Timo Schmid
KWKaye Wilkins
Kaye Wilkins
AJAlexander Joeris
Alexander Joeris
Esult in instability of the fracture fragments, which can result in either an unsatisfactory cosmetic or functional outcome. In our experience, these problems can be overcome with the use of a small lateral external fixator....

1 October 2015 in Injury
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Journal Article
Closed access
AEAntonio Ernstberger
Antonio Ernstberger
AJAlexander Joeris
Alexander Joeris
MDMonica Daigl
Monica Daigl
MKMiklos Kiss
Miklos Kiss
KAKatharina Angerpointner
Katharina Angerpointner
USUli Schmucker
Uli Schmucker