Minimally invasive plate osteosynthesis (MIPO) has been advocated as a safe approach to humeral shaft fracture management. We evaluated the reproducibility of this technique in a regional hospital. Thirty-five patients underwent MIPO of humerus shaft fractures. Fifteen patients had an open fracture, six a preoperative radial nerve palsy, and nine a concomitant thoracic, musculoskeletal or vascular injury. At an average 12-month follow-up, 91% of fractures healed after a mean of 12 weeks (range, 8-16). Two infections occurred. Final alignment averaged 4° of varus (range, 5° of valgus to 20° of varus). Active elbow ROM averaged 114° (range, 60-135°) and was less than 100° in nine elbows. Five of six preoperative radial nerve injuries recovered spontaneously. Healing and infection rates in this study are consistent with those reported in the literature. Lower elbow ROM and higher fracture angulation at healing were nevertheless found. MIPO is technically demanding and requires adequate intraoperative imaging and surgical experience in order to obtain adequate fracture alignment. Brachialis muscle scarring and inadequate postoperative rehabilitation may be involved in limited elbow range of motion.
The Jalisco region of western Mexico is the locus of interaction among the North America, Cocos, and Rivera plates, giving rise to the Jalisco block. This region is one of the most tectonically active in Mexico, and here took place the largest instrumentally recorded earthquake in Mexico the twentieth century, on 3 June 1932 (M 8.2), three important tsunamis in the last 100 yrs, and two of the most active volcanoes in Mexico. Nevertheless, the first seismicity studies here, undertaken with temporary networks, did not commence until 1994. In 2008, the Government of Jalisco and the University of Guadalajara funded a research project to install a seismic network in this region. The principal objective was to study the seismic hazard in the region and characterize seismic parameters in the different areas to design building codes. The Red Sísmica y Acelerométrica Telemétrica de Jalisco (RESAJ) project was thus initiated in 2009. Its Central Lab is at Centro de Sismología y Volcanología de Occidente (SisVOc), located at the Universidad de Guadalajara in Puerto Vallarta. Currently, the RESAJ has 26 telemetered and 2 autonomous stations. The RESAJ serves as the seismological lab for the postgraduate program at SisVOc.
The purpose of this study was to examine the relationship between the collective efficacy of teachers and student achievement at economically disadvantaged middle school campuses. The population of the study consisted of Texas campuses that served economically disadvantaged students and received a campus rating of Exemplary or Academically Unacceptable for two consecutive years, according to the Texas Education Agency (TEA). The data shows that significant differences exist between the collective efficacy of teachers from Exemplary and Academically Unacceptable campuses. It was also discovered that the Assessment of Teaching Competence (GC) and Analysis of Teaching Task (TA) is higher for teachers from Exemplary campuses versus that of teachers from Academically Unacceptable campuses. The quantitative findings presented in the study provide further knowledge on the relationship between collective efficacy and student achievement. This study has found that the collective efficacy of a campus can influence student achievement at the middle school level.
BackgroundFixation of diaphyseal tibial fractures by plates is not considered the best option due to complications that may eventually arise; however, if principles of stability and proper surgical techniques are used, it is possible to obtain fracture consolidation without major risks.MethodsWe conducted a cross-sectional observational descriptive study by retrospectively analyzing medical records of patients with diaphyseal tibial fractures that were treated with plates from the period between June 2011 and June 2014 at San José and Susana López Hospitals in the city of Popayan, Colombia. 3 treatment groups were created and analyzed according to the type of fracture (Association Osteosynthesis/Osteosynthesis Trauma Association AO/OTA): group I: simple fractures 42A/B, absolute stability; group II: simple fractures 42A/B, Minimally Invasive Plate Osteosynthesis (MIPO) technique, relative stability; group III: multifragmentary fractures 42C, MIPO technique, relative stability. A descriptive analysis of patients, fracture consolidation time, and complications in each group were performed.Results45 patients with tibial fractures treated with osteosynthesis plates were analyzed. Group I: 14 patients, 42A (n=13) and 42B (n=1), had an average consolidation time of 16.38 (SD=1.98) and 14 weeks, respectively. In group II: 19 patients, out of which 18 achieved fracture consolidation (42A n=15 and 42B n=3) with an average time of 17.4 (SD=3.33) and 17.3 weeks (SD=6.11), respectively. Finally, in group III: 12 patients all with 42C fractures with a consolidation time of 16.86 (SD=2.93) weeks. The average fracture consolidation time for all 44 patients was 16.86 weeks (SD 2.93).ConclusionsOsteosynthesis plates are an alternative to intramedullary nailing for diaphyseal tibial fractures and their outcomes can be favorable as long as the management of soft tissues and the proper principle of stability are taken into account.Level of evidenceIV.
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