Comput. Aided Surg. - Use of a patient-specific CAD/CAM surgical jig in extremity bone tumor resection and custom prosthetic reconstruction.

Tópicos

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Resumo

Computer navigation has recently been introduced for bone tumor surgery in the orthopedic field, with the aim of achieving increased accuracy and precision in tumor resection and in custom prosthetic reconstruction. However, the technique requires bulky navigation facilities, the presence of a system operator in the operating room, and surgeons with prior experience in navigated surgery. We describe a new and simple method of using a patient-specific computer-aided design/computer-aided modeling (CAD/CAM) surgical jig to realize the preoperative planning in the surgical field. The accuracy of the proposed method was first tested in a cadaver trial. It took one minute to set the location of the jig prior to the bone resection and three minutes to perform the bone resections via the cutting slits of the jig. The dimensional difference between the achieved and planned bone resection was <1mm on validation with the help of a junctional plate and a navigation system. The technique was then applied successfully to a patient with a low-grade osteosarcoma of the femur. An intercalated tumor resection was performed using a patient-specific surgical jig, and a custom CAD prosthesis reconstruction matched accurately to the skeletal defect. Further assessment in a larger population is necessary to determine the clinical efficacy of the technique.

Resumo Limpo

comput navig recent introduc bone tumor surgeri orthoped field aim achiev increas accuraci precis tumor resect custom prosthet reconstruct howev techniqu requir bulki navig facil presenc system oper oper room surgeon prior experi navig surgeri describ new simpl method use patientspecif computeraid designcomputeraid model cadcam surgic jig realiz preoper plan surgic field accuraci propos method first test cadav trial took one minut set locat jig prior bone resect three minut perform bone resect via cut slit jig dimension differ achiev plan bone resect mm valid help junction plate navig system techniqu appli success patient lowgrad osteosarcoma femur intercal tumor resect perform use patientspecif surgic jig custom cad prosthesi reconstruct match accur skelet defect assess larger popul necessari determin clinic efficaci techniqu

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