Pittsburgh Knee Rules
The Pittsburgh knee rules are medical rules created to ascertain whether a knee injury requires the use of X-ray to assess a fracture. Criteria * Blunt trauma or a fall as mechanism of injury AND either of the following: ** Age younger than 12 years or older than 50 years. ** Inability to walk four weight-bearing steps in the emergency department. If the patient satisfies the above criteria, they should receive an X-ray to assess for a possible fracture. Accuracy The sensitivity of using the Pittsburgh knee rules is 99% with a specificity of 60%. That means the use of the above rules has a false negative result of 1% and a false positive result of 40%. From a medical point of view, the false positive result is less important as if the patient is positive, they should receive an X-ray to assess for a possible fracture, which has a much higher specificity. However, from a practical point of view, false positives that lead to negative X-ray tests were the very thing that the ...
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Radiology
Radiology ( ) is the medical discipline that uses medical imaging to diagnose diseases and guide their treatment, within the bodies of humans and other animals. It began with radiography (which is why its name has a root referring to radiation), but today it includes all imaging modalities, including those that use no electromagnetic radiation (such as ultrasonography and magnetic resonance imaging), as well as others that do, such as computed tomography (CT), fluoroscopy, and nuclear medicine including positron emission tomography (PET). Interventional radiology is the performance of usually minimally invasive medical procedures with the guidance of imaging technologies such as those mentioned above. The modern practice of radiology involves several different healthcare professions working as a team. The radiologist is a medical doctor who has completed the appropriate post-graduate training and interprets medical images, communicates these findings to other physicians ...
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Fracture
Fracture is the separation of an object or material into two or more pieces under the action of stress. The fracture of a solid usually occurs due to the development of certain displacement discontinuity surfaces within the solid. If a displacement develops perpendicular to the surface, it is called a normal tensile crack or simply a crack; if a displacement develops tangentially, it is called a shear crack, slip band or dislocation. Brittle fractures occur with no apparent deformation before fracture. Ductile fractures occur after visible deformation. Fracture strength, or breaking strength, is the stress when a specimen fails or fractures. The detailed understanding of how a fracture occurs and develops in materials is the object of fracture mechanics. Strength Fracture strength, also known as breaking strength, is the stress at which a specimen fails via fracture. This is usually determined for a given specimen by a tensile test, which charts the stress–strain cu ...
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Blunt Trauma
Blunt trauma, also known as blunt force trauma or non-penetrating trauma, is physical traumas, and particularly in the elderly who fall. It is contrasted with penetrating trauma which occurs when an object pierces the skin and enters a tissue of the body, creating an open wound and bruise. Blunt trauma can result in contusions, abrasions, lacerations, internal hemorrhages, bone fractures, as well as death. Blunt trauma represents a significant cause of disability and death in people under the age of 35 years worldwide. Classification Blunt abdominal trauma Blunt abdominal trauma (BAT) represents 75% of all blunt trauma and is the most common example of this injury. 75% of BAT occurs in motor vehicle crashes, in which rapid deceleration may propel the driver into the steering wheel, dashboard, or seatbelt, causing contusions in less serious cases, or rupture of internal organs from briefly increased intraluminal pressure in the more serious, depending on the force ...
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Ottawa Knee Rules
The Ottawa knee rules are a set of rules used to help physicians determine whether an x-ray of the knee is needed. They state that an X-ray is required only in patients who have an acute knee injury with one or more of the following: * Age 55 years or older * Tenderness at head of fibula * Isolated tenderness of patella * Inability to flex the knee greater than 90° * Inability to bear weight both immediately and in the emergency department (4 steps) The Ottawa knee rules were derived to aid in the efficient use of radiography in acute knee injuries and have since been prospectively validated on multiple occasions in different populations and in both children and adults. Some studies found the sensitivity of the Ottawa knee rules is 98-100% for clinically significant knee fractures, meaning that 98-100% of all patients with a fracture will meet the criteria for X-ray. However, specificity for the Ottawa knee rules is typically poor, meaning that a significant proportion of those ...
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Diagnostic Emergency Medicine
Diagnosis is the identification of the nature and cause of a certain phenomenon. Diagnosis is used in many different disciplines, with variations in the use of logic, analytics, and experience, to determine " cause and effect". In systems engineering and computer science, it is typically used to determine the causes of symptoms, mitigations, and solutions. Computer science and networking * Bayesian networks * Complex event processing * Diagnosis (artificial intelligence) * Event correlation * Fault management * Fault tree analysis * Grey problem * RPR Problem Diagnosis * Remote diagnostics * Root cause analysis * Troubleshooting * Unified Diagnostic Services Mathematics and logic * Bayesian probability * Block Hackam's dictum * Occam's razor * Regression diagnostics * Sutton's law copy right remover block Medicine * Medical diagnosis * Molecular diagnostics Methods * CDR Computerized Assessment System * Computer-assisted diagnosis * Differential diagnosis * Medical diagnos ...
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Examination Of The Knee
Examination may refer to: * Physical examination, a medical procedure * Questioning and more specific forms thereof, for example in law: ** Cross-examination ** Direct examination * Exam as assessment, also "test", "exams", "evaluation" ** Civil service entrance examination *** Imperial examination See also * Analysis * Appraisal (other) * Assessment (other) * Evaluation * Evaluation (other) * Exam (other) * Investigation (other) * Study (other) Study or studies may refer to: General * Education **Higher education * Clinical trial * Experiment * Observational study * Research * Study skills, abilities and approaches applied to learning Other * Study (art), a drawing or series of drawin ...