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Hip Replacement Research Paper

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Over three hundred thousand hip replacements were performed in 2010. A two hundred percent increase from 2000. The number of replacements has continued to grow as recovery from the surgery has become much faster. Although recovery time has decreased, patients are still at risk of infection from their bodies rejecting the metal replacement hip. Infection from the bodies’ reaction to the metal hip will soon become a problem of the past as researchers have begun making replacement hips out of bone-like material infused with antibiotics. These new replacements will allow the body to heal with the new structure instead of fighting the foreign material. Patients will recover even faster with less chance of infection. Each patient’s hip will be custom-made to model the patient's bone with a new technique called Fused Filament Fabrication …show more content…

The SM process is the complete opposite of AM. During SM, a machine cuts material layer by layer, leaving the desired shape. The SM machine has three basic components, which are a movable head, a bit to cut, and the material. To visualize the subtractive manufacturing (SM) process, imagine making a model car from a stick of butter. Your hands act as the machines head positioning the butter knife in your hand, which acts as the bit, to make precise cuts into the butter. You continue to follow the cutting instructions given to you and what started as a block is now a model car. That’s how SM works. Because of SM’s extensive use, a standard symbolic language known as Geometric Dimensioning and Tolerancing (GD&T) has been developed to ensure manufacturers can fully understand designer’s designs. GD&T standards for SM specify geometry, material, tolerances, surface finish, design intent and acceptable variations in geometry. These standards ensure manufacturers produce products that meet the designers’

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