Med Biol Eng Comput - Patient-tailored plate for bone fixation and accurate 3D positioning in corrective osteotomy.

Tópicos

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Resumo

A bone fracture may lead to malunion of bone segments, which gives discomfort to the patient and may lead to chronic pain, reduced function and finally to early osteoarthritis. Corrective osteotomy is a treatment option to realign the bone segments. In this procedure, the surgeon tries to improve alignment by cutting the bone at, or near, the fracture location and fixates the bone segments in an improved position, using a plate and screws. Three-dimensional positioning is very complex and difficult to plan, perform and evaluate using standard 2D fluoroscopy imaging. This study introduces a new technique that uses preoperative 3D imaging to plan positioning and design a patient-tailored fixation plate that only fits in one way and realigns the bone segments as planned. The method is evaluated using artificial bones and renders realignment highly accurate and very reproducible (d(err) < 1.2 ? 0.8 mm and f(err) < 1.8? ? 2.1?). Application of a patient-tailored plate is expected to be of great value for future corrective osteotomy surgeries.

Resumo Limpo

bone fractur may lead malunion bone segment give discomfort patient may lead chronic pain reduc function final earli osteoarthr correct osteotomi treatment option realign bone segment procedur surgeon tri improv align cut bone near fractur locat fixat bone segment improv posit use plate screw threedimension posit complex difficult plan perform evalu use standard d fluoroscopi imag studi introduc new techniqu use preoper d imag plan posit design patienttailor fixat plate fit one way realign bone segment plan method evalu use artifici bone render realign high accur reproduc derr mm ferr applic patienttailor plate expect great valu futur correct osteotomi surgeri

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