Abstract
Objective To assess accuracy and efficacy of the mini-invasive screw insertion for fix-ation of the posterior column of acetabulum by the computer-assisted thermoplastic elastomer film localization system. Methods In a simulated surgical setup, 20 cannulated screws were placed into the posterior column of acetabulum in 10 corpses under the guidance of the computer-assisted thermoplastic elastomer film localization system. The positions of the screws were checked with CR and CT. Results All the 20 screws were in the safe area. Radiation exposure was totally avoided. Conclusion The system can pro-vide precise, effective and safe navigation for screw insertion to fix the posterior column of acetabulum, and markedly prevent the patient and the staff from exposure to the radiation. Key words: Surgery, computer-assisted; Thermoplastic elastomer film localization system; Acetabulum; Screws
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