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Five whys (or 5 whys) is an iterative interrogative technique used to explore the cause-and-effect relationships underlying a particular problem. [1] The primary goal of the technique is to determine the root cause of a defect or problem by repeating the question "why?" five times, each time directing the current "why" to the answer of the ...
The basic concept was first used in the 1920s, and is considered one of the seven basic tools of quality control. [5] It is known as a fishbone diagram because of its shape, similar to the side view of a fish skeleton. Mazda Motors famously used an Ishikawa diagram in the development of the Miata sports car. [6]
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Such fractures occur in planar parallel sets at an angle of 60 degrees and can be of the same size and scale as joints. As a result, some "conjugate joint sets" might actually be shear fractures. Shear fractures are distinguished from joints by the presence of slickensides, the products of shearing movement parallel to the fracture surface. The ...
Why–because analysis (WBA) is a method for accident analysis using graph theory. [1] It is independent of application domain and has been used to analyse, among others, aviation-, railway-, marine-, and computer-related accidents and incidents. It is mainly used as an after-the-fact (or a posteriori) analysis method.
Rib fractures usually occur from a direct blow to the chest such as during a motor vehicle collision or from a crush injury. [2] [1] Coughing or metastatic cancer may also result in a broken rib. [1] The middle ribs are most commonly fractured. [5] [1] Fractures of the first or second ribs are more likely to be associated with complications. [6]
The Müller AO Classification of fractures is a system for classifying bone fractures initially published in 1987 [1] by the AO Foundation as a method of categorizing injuries according to therognosis of the patient's anatomical and functional outcome. "AO" is an initialism for the German "Arbeitsgemeinschaft für Osteosynthesefragen", the ...
Bone fractures, joint dislocations, high dose steroids [1] Diagnostic method: Medical imaging, biopsy [1] Differential diagnosis: Osteopetrosis, rheumatoid arthritis, Legg–Calvé–Perthes syndrome, sickle cell disease [3] Treatment: Medication, not walking on the affected leg, stretching, surgery [1] Frequency ~15,000 per year (US) [4]