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特許 係属中 Surgical methods of treating fractures have their own risks and benefits, but usually surgery is done only if conservative treatment has failed, is very likely to fail, or likely to result in a poor functional outcome. With some fractures such as hip fractures (usually caused by osteoporosis), surgery is offered routinely because non-operative treatment results in prolonged immobilisation, which commonly results in complications including chest infections, pressure sores, deconditioning, deep vein thrombosis (DVT) and pulmonary embolism, which are more dangerous than surgery.