Morphometry of Glenoid Cavity

Objectives: Knowledge of the shape and dimensions of the glenoid are important in the design and fitting of glenoid components for total shoulder arthroplasty. An understanding of variations in normal anatomy of the glenoid is essential while evaluating pathological conditions like osseous Bankart lesions and osteochondral defects. Methods: This study was done on 202 dry, unpaired adult human scapulae of unknown sex belonging to the south Indian population. Three glenoid diameters were measured, the superior-inferior diameter, anterior-posterior diameter of the lower half and the anterior-posterior diameter of the upper half of the glenoid. Based on a notch present on the anterior glenoid rim, variations in the shape of the glenoid cavity were classified as inverted comma shaped, pear shaped and oval. Results: The average superior-inferior diameter on right and the left sides were 33.67±2.82mm and 33.92±2.87mm respectively. The average anterior-posterior diameter of the lower half of the right glenoid was 23.35±2.04mm and that of the left was 23.02±2.30mm. The mean diameter of the upper half of the right glenoid was 16.27±2.01mm and that of the left was 15.77±1.96mm. Conclusion: The dimensions of the glenoid observed in the present study were lesser than those recorded in the studies done on other populations. This fact may be taken into consideration while designing glenoid prostheses for the south Indian population. The current study recorded a higher percentage of glenoid cavities having the glenoid notch as compared to earlier studies. While evaluating defects/lesions of the glenoid, this fact could be useful

Unusual formation and sub-omohyoid course of external jugular vein.

Variations in the origin and termination of external jugular vein are common and are reported in the past. However, variations in the course of external jugular vein are uncommon. During routine dissection classes for medical undergraduates, we came across the unusual formation and course of right external jugular vein and absence of common facial vein, in an approximately 60-year-old male cadaver of Indian origin. External jugular vein was formed by the continuation of undivided trunk of retromandibular vein. Following its formation, it passed vertically superficial to sternocleidomastoid muscle to the lower part of occipital triangle. In the occipital triangle it pierced the investing layer of deep cervical fascia and passed deep to the inferior belly of omohyoid muscle and coursed through the subclavian triangle. Then, it terminated at the junction of subclavian vein with internal jugular vein. Facial vein joined with submental vein and finally drained into internal jugular vein. Further, the posterior auricular vein and anterior jugular veins were absent. Knowledge about the variations of the retromandibular vein, common facial vein and external jugular vein observed in this study, may be important for the surgeons, to prevent inadvertent injury and excessive bleeding during diagnostic and therapeutic procedures

Identification of Lactobacillus pobuzihii from tungtap: A traditionally fermented fish food, and analysis of its bacteriocinogenic potential

Lactic acid bacteria (LAB) were selectively isolated from tungtap, a traditionally fermented fish food product. Five such bacteria with bacteriocinogenic potential were characterized by polyphasic taxonomic approach. The phylogenetic analyses of 16S rRNA gene sequences showed their relatedness to Lactobacillus pobuzihii (≥99.4% similarity), while biochemical and physiological characteristics revealed significant differences among the isolates. Bacteriocinogenic activity assay against selected bacterial strains: Salmonella typhi MTCC 733, Bacillus cereus MTCC 430, Klebsiella pneumoniae MTCC 109, Escherichia coli MTCC 118 and Bacillus licheniformis MTCC 429 were performed with crude extracts using ethyl acetate as solvent, as well as by solvent and cell free supernatants. The growth inhibition zones were measured after incubation and compared with antibiotics like ampicillin, gentamicin, vancomycin, chloramphenicol and tetracycline. The culture extract of L. pobuzihii showed significant bacteriocinogenic activity against the tested strains.Key words: Fermented, tungtap, Lactobacillus pobuzihii, crude extracts, bacteriocinogenic activity

Aksum University (AKU) faculties’ needs for support in training and academic research: a basis for improvement in productivity of publication

The objective of this study is to identify and describe Aksum University (AKU) faculties’ training and support needs for academic research as a basis of improvement in the productivity of academic research publications. The stratified random sample was 51 faculties from five of the six colleges in Aksum University representing 16.3% of the oncampus teaching faculties. The hypotheses of the study were: (a) training in data analysis and research writing is needed; (b) faculties know how to do research design and methodology; (c) faculties need internet access; (d) research training does not impact teaching; and (e) there are no qualified faculties at AKU for research training. Two Principle Component Analysis factors related to these hypotheses were described as a training factor TFAC1(I need training in data analysis and research report writing ) and a support factor TFAC2 (Internet access is essential and research class would not interfere with teaching).Keywords: Training, Support, Research, Publications, Universit

Two Warehouse Inventory Model for Deteriorating Products with Stock Dependent Demand and Shortages

In this paper a deterministic inventory model for two warehouses has been developed. In two warehouses the first is the owned warehouse with a fixed capacity of W units and the other one is rented warehouse with unlimited stocking capacity. The deterioration occurs in both the warehouses. First the demand is fulfilled from the inventory in rented warehouse and after thatthe inventory in owned warehouse has been used. The shortages are allowed in owned warehouse only and the excess demand is partially backlogged. For the generality of the model we presented the equations for total cost of the system. A numerical example and sensitivity analysis with respect to different associated parameters has also been presented to illustrate the model

QUANTUM EFFICIENCY OF HYDROXYL RADICAL FORMATION IN A COMPOSITE CONTAINING NANOCRYSTALLINE TIO2 E ZINC PHTHALOCYANINE, AND THE NATURE OF THE INCIDENT RADIATION

In this study, we investigate the generation of hydroxyl radicals mediated by a composite containing TiO2 and 1.6% m/m of zinc phthalocyanine (TiO2/ZnPc) in aqueous suspensions containing methanol as oxidisable substrate. The composite features a specific surface 20% less than the value estimated for TiO2 P25, probably due to the covering of the surface of the oxide by ZnPc and the pH of the isoelectric point of this composite equal of 5.5, about two units of pH lower than the value estimated for TiO2 P25, are probably related to the difference in photocatalytic activity found for these materials. To assess the influence of different spectral bands of electromagnetic radiation on the production of hydroxyl radicals, we used different sources of radiation in experiments conducted to estimate the quantum efficiency of hydroxyl radical formation (HO•), via photocatalytic oxidation of methanol. The association between zinc phthalocyanine and TiO2 has allowed the formation of a light absorber material with absorption spectral range extended to the visible region. Our results suggest that, despite the higher values of FHO• for TiO2 P25, the combination of visible and ultraviolet radiation furnished by a high pressure mercury lamp without the protective bulb, or solar radiation, causes the composite to present good values for the same paramete

Surgical management of Stenson’s duct injury using epidural catheter: A novel technique

Stenson’s duct of parotid gland is a major duct which drains saliva into the oral cavity. Deep penetrating wound in the form of cut or crush injury to the buccal area carries the risk of parotid duct injury. It is in the form of ductal exposure, laceration, total severing, or crushing of the duct. These conditions are difficult to diagnose because of complex anatomy and variable nature of injury. Successful management of parotid duct injury depends on early diagnosis and appropriate intervention, failing of which may lead to complications like sialocele or salivary fistula. Many techniques have been proposed for diagnosis and management of parotid duct injuries. This article presents an easy and novel technique to diagnose and manage the parotid duct injuries using an “epidural catheter” which is often used for inducing spinal anesthesia. The technique of epidural catheter usage, its advantages, and limitation over other techniques proposed for the management of parotid duct injury are discussed.Key words: Epidural catheter, parotid duct, salivary fistula, sialocel

Distance between midline and vertebral artery groove of atlas – a real aid to the neurosurgeon

The knowledge of the relationship of the vertebral artery with the atlas is very important, in order to avoid any injury to the vertebral artery, during surgeries in the craniovertebral region. Different researchers have measured the distance of the vertebral artery from the midline along the posterior arch of atlas (oblique distance), but some authors have measured the perpendicular distance of vertebral artery from the midline. Usually, it is the perpendicular distance along which the surgeons are exploring in this region. Hence, the present study was planned to study and compare both oblique and perpendicular distances of the vertebral artery from the midline and find out statistical differences between these two parameters. It was carried out on 30 atlas vertebrae of Indian origin. The oblique and perpendicular distances of vertebral artery groove from midline and the thickness of vertebral artery groove were measured. The results suggest that dissection on the posterior aspect of the arch of atlas should remain 17.00 mm lateral to the midline and dissection on the superior aspect of the arch of atlas should remain 8.00 mm from the midline to prevent injury to the vertebral artery. It was also observed that “oblique distances of vertebral artery groove from the midline to the medial margin of inner and outer cortex are larger than the corresponding perpendicular distances from the midline”. Although, the differences of oblique and perpendicular distances are not statistically significant but it may be clinically significant for the surgeons operating in the craniovertebral region. Hence, it is concluded that the surgeon should be aware of both the distances while operating in the craniovertebral region to avoid any iatrogenic injury to the vertebral artery

Clostridium perfringens in London, July 2009: two weddings and an outbreak

Food poisoning outbreaks caused by Clostridium perfringens enterotoxin occur occasionally in Europe but have become less common in recent years. This paper presents the microbiological and epidemiological results of a large C. perfringens outbreak occurring simultaneously at two weddings that used the same caterer. The outbreak involved several London locations and required coordination across multiple agencies. A case-control study (n=134) was carried out to analyse possible associations between the food consumed and becoming ill. Food, environmental and stool samples were tested for common causative agents, including enterotoxigenic C. perfringens. The clinical presentation and the epidemiological findings were compatible with C. perfringens food poisoning and C. perfringens enterotoxin was detected in stool samples from two cases. The case-control study found statistically significant associations between becoming ill and eating either a specific chicken or lamb dish prepared by the same food handler of the implicated catering company. A rapid outbreak investigation with preliminary real-time results and the successful collaboration between the agencies and the caterer led to timely identification and rectification of the failures in the food handling practices