If the wheels on your vehicle are out of alignment, they wont operate as smoothly and theyll wear out faster. The same principle applies to total knee replacement. A common reason why knees and other artificial joints wear out prematurely and require revision surgery is that they arent correctly aligned when first implanted. Complicating the process is that one-size-fits-all doesnt apply to joint replacements, so surgeons must use anatomical landmarks to cut the surrounding bones and properly position each implant component.
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