Leonardo Ortiz Aguilar, Mexico
Title: Computer-assisted total bilateral knee arthroplasty in one surgical time
Introduction: Total navigated knee replacement uses a computer-guided system, which provides immediate information on pre-cut trans- operative conditions of the knee, in relation to pelvic limb alignment.
Material and methods: Observational, descriptive study conducted from March 2003 to February 2019. Total bilateral knee replacement was performed at the same time surgically by a surgeon, evaluating function and pain on the WOMAC, EVA, and range of motion scores of both knees. Two groups of patients were studied: the first represents presurgical and the second post- surgical. Student’s t-test and ?2 were applied for statistical analysis.
Results: 31 patients (62 prostheses), 83.9% of the female sex and 16.1% male, average age 67.32 years, average follow-up 6.55 years (± 3.8) were studied. It was identified that 100% of the patients in both knees have a deviation between 0o and 2o measured in the mechanical axis. The WOMAC scale showed an average of 22.71 ± 3.34 presurgical and 4.16 ± 1.84) post-surgical, with statistically significant differences. The average analog visual scale was 9.06 ± 0.814 presurgical and 2.35 ± 1.427 post-surgical.
Conclusions: This technique is reliable, safe and satisfactory. Excellent clinical and radiographic results were evident regarding the positioning of prosthetic components.