Correct Positioning of the Foot and Ankle Essay Example | Topics and Well Written Essays - 500 words

Correct Positioning of the Foot and Ankle - Essay Example These four positions are all that are needed for accurate and complete x-ray views of the foot and the ankle; depending on the location of the pain or injury depends on which of the three positions are used; this paper will discuss all four of the different positions that are used, as well as an example of a foot injury, an example of an ankle injury, and which of the three positions are used to best diagnose and treat the specific injury. The anteroposterior, or AP, view provides imaging of the forefoot, midfoot, tarsometatarsal and transverse tarsal articulations. To be able to obtain this particular view, the foot is placed pad down on the x-ray film, with the knee bent at a 90 degree angle, while the patient sits on the table. The beam is â€Å"centered on the third metatarsal and angled 15 degrees cephalad from the vertical† (Jones & Younger, 2006). This natural position mimics that a person would be in if they were sitting on the ground with their knees bent, and their weight placed on their elbows and buttocks. The lateral view is obtained by a person lying on their side, with the junction of the talus and fibula placed directly on the x-ray film, or plate. The beam is directly â€Å"perpendicular to a point above the base of the fifth metatarsal† (Jones & Younger, 2006). The internal oblique, or medial oblique, image compliments the lateral and AP views of the foot and ankle and is used routinely as the third view in the series. This position involves the turning of the foot and ankle outward, as though the patient were looking sideways at their ankle. The foot should be kept at a 30 degree angle ideally, with the distal phalanx of the big toe supporting the weight of the foot, and the last three phalanges of the foot not resting on the plate at all. It provides a clearer picture of the forefoot. The external oblique image is used to provide a clearer picture of the hind foot and is used as a main part of the three view foot

Internet Safety Essay Example | Topics and Well Written Essays - 1250 words

Internet Safety - Essay Example Confirmation of declared identity of institutions or users (Bejtlich, 2006). For the verification of identity are required suitable methods for various applications and services, as are the electronic contracting of convention, the control of access in certain data and services (e.g. for the tale-workers) and the verification of web sites (e.g., for internet banks). It should also be included the possibility of anonymity, since a lot of services do not only need the identity of user but reliable confirmation of certain criteria of (called â€Å"anonymous credentials†), as the solvency. Protection of communications or stored given opposite interception and reading by not permitted individuals (Greene, 2004). It is particularly required for the transmission of sensitive data and she is one from the requirements that correspond in the concern of protection of private life of virtuous networks of communications. It is a device which permits, restricts computer traffic in accordance to the security policies enforced in the business rules. Firewalls are either implemented through hardware, software, or both. They work best in detecting attacks that could enter or leave your system through an open port, such as worms and some Trojan horses. They do not scan the fragmented packets so in that way male wares attached to e-mails are still threats inside your network. The electronic communications can intercept and the data can be copied or modified. Interception it can be realized with various ways. Potential damage: The outlaw interception can cause damage, so as much violation of private life of individuals, what via the exploitation of data that they have been intercepted (Panko, 2004). Likely solutions: Defense against interception can emanate with the encryption of data that is transmitted via the network. Potential damage: The not permitted access has occasionally as motive mental challenge and no