Electromagnetic Navigation in Total Knee Arthroplasty—A Single Center, Randomized, Single-Blind Study Comparing the Results With Conventional Techniques

Abstract

We report on the results of a randomized study (n=200) to compare total knee arthroplasty performed using conventional instrumentation or electromagnetic computer assisted surgical technique. 92% of navigated and 85% of conventional knees were implanted within ±3° from neutral mechanical alignment; there was no statistically significant difference between these proportions. There was also no difference in femoral or tibial rotation assessed by CT scan. At 1year follow up there was no statistical difference between the two groups in American Knee Society Score, Oxford Knee Scores, patient satisfaction, quality of life, hospital length of stay, complication rates or other adverse events. Tourniquet time in the navigated group was longer. Proving value for navigation in total knee arthroplasty surgery remains a challenge.

New technology‐based assistive techniques in total knee arthroplasty: A Bayesian network meta‐analysis and systematic review

“…Twenty‐one of the included studies compared clinical outcomes between CAS‐ and CON‐TKA 8,31–40,42–51 . Most of these studies reported no significant differences in all clinical outcome measures, including KSS knee and function scores, WOMAC scores, HSS scores, and ROM, regardless of the follow‐up time 8,31,32,34,36,37,39,43–47,49–51 .…”

“…Most of these studies reported no significant differences in all clinical outcome measures, including KSS knee and function scores, WOMAC scores, HSS scores, and ROM, regardless of the follow‐up time 8,31,32,34,36,37,39,43–47,49–51 . However, the results of six studies suggested that CAS‐TKA could improve post‐operative clinical outcomes 33,35,38,40,42,48 . Among these, a long‐term randomized trial with a 6.4‐year follow‐up time showed significantly better KSS function score in the CAS group compared to the CON group 35 .…”

Conventional versus Smart Wireless Navigation in Total Knee Replacement: Similar Outcomes in a Randomized Prospective Study

“…Since its introduction, navigation has taken various forms: image-based navigation, imageless navigation, fluoroscopy-based navigation, optical navigation, 7 8 9 10 and electromagnetic navigation. 11 12 13 14 15 Recently, navigation systems have developed the use of gyroscopes, 16 17 which can be attached to conventional resection instrumentation and can capture data during the procedure and exchange information using a secure local wireless (WiFi) channel, to guide the bone resections and validate component placement. This system simplifies the tracking process and provides alignment information directly on the surgical field, deserving the name of “smart wireless navigation.” One of these new navigation systems is iAssist (Zimmer, Inc., Warsaw, Indiana, United States), which is an alignment system designed with the user interface built into disposable electronic pods that attach onto the femoral and tibial resection instruments.…”

A preliminary study on surgical navigation for epiduroscopic laser neural decompression

“…[7][8][9][10][11] This problem has motivated the study on the introduction of radiation-free image guidance or surgical navigation to guide the procedure without requiring C-arm imaging. There have been a number of studies on surgical navigation using an electromagnetic tracking system (EMTS) [12][13][14][15][16][17][18][19][20][21] but nothing for ELND procedure.…”