OMNINAV_main_RGB_Lo_Res

Mobile workstation includes full touch display, plus tough laptop for switching between multiple stations.

The new, robust OMNINAV station is fully prepared for the operating room. With an interactive touch screen facing the surgeon and patient, navigation protocol is determined with a touch of the finger. An extended foot pedal allows the surgeon to move through the procedure step by step. The navigation software runs off of a tough laptop, designed to withstand transport to and from workstations.

NAV - Station - 450

 

OMNINAV Clinical Results

 

“Influence of Pre-Operative Deformity on Surgical Accuracy in and Time in Robotic-Assisted TKA”

J.A. Koenig, C. Plaskos: The Bone + Joint J 2013 vol. 95-B no SUPP 28 62

Introduction: We evaluated the utility of imageless computer-navigation coupled with a miniature robotic-cutting guide for managing large deformities in TKA. We asked what effect did severe pre-operative deformities have on post-operative alignment and surgery time using the system. We also report on the early functional outcomes of this group of patients.

Conclusions: We have shown that in one surgeon’s hands severe coronal deformities and flexion contractures can be consistently corrected to within 3° and 4° of neutral, respectively, when using computer navigation. The additional time required for managing these more difficult cases using this technology was typically 3–5 minutes.


“Robotic versus Computer-Assisted Navigation in Total Knee Arthroplasty: Efficiency and Accuracy”

T.C. Clark, C. Plaskos, F.H. Schmidt: The Bone + Joint J 2013 vol. 95-B no. SUPP 34 524

Introduction: Computer-assisted surgery (CAS) aims to improve component positioning and mechanical alignment in Total Knee Arthroplasty (TKA). Robotic cutting-guides have been integrated into CAS systems with the intent to improve bone-cutting precision and reduce navigation time by precisely automating the placement of the cutting-guide. The objectives of this study were to compare the intra-operative efficiency and accuracy of a robotic-assisted TKA procedure to a conventional computer-assisted TKA procedure where fixed sequential cutting-blocks are navigated free-hand.

Conclusions: In one surgeon’s hands, use of a robotic cutting-guide decreased navigation time, improved intraoperative final alignment, and decreased hospitalization length when compared to conventional computer-assisted navigation in TKA.


“Patient Specific Instrumentation versus Computer Navigated, Adjustable Cutting Blocks in Total Knee Arthroplasty”

D. Nam, MD; P. Maher, BS; B.J. Rebolledo, MD; A. S. McLawhorn, MD; A.D. Pearle, MD: AAOS 2013 Poster Presentation

Introduction: Computer-assisted surgical (CAS) techniques improve component and overall alignment in total knee arthroplasty (TKA)1. Recently, patient specific instrumentation (PSI) has been introduced, in which preoperative 3-D imaging is used to manufacture disposable cutting blocks specific to a patient’s anatomy. Proposed benefits include improvements in component alignment and cost-efficiency versus conventional techniques, although the reported results of these benefits are mixed2,3.

Objective: To compare the alignment accuracy of PSI to an imageless, CAS system performed with adjustable cutting blocks, in total knee arthroplasty.

Hypothesis: PSI will not achieve the same degree of overall mechanical, and component alignment accuracy as the CAS system.

Conclusions: MRI-based, patient specific instrumentation does not provide the same degree of alignment accuracy as an imageless, CAS system in TKA. While PSI may potentially increase the cost-effectiveness of TKA, its use does not result in the same degree of alignment accuracy as CAS techniques

1. Mason JB et al. Meta-analysis of alignment outcomes in computer-assisted total knee arthroplasty surgery. J Arthroplasty, 2007;22(8):1097-1106
2. Ng VY et al. Improved accuracy of alignment with patient-specific positioning guides compared with manual instrumentation in TKA. Clin Orthop Relat Res. 2011.
3. Nunley RM et al. Are patient-specific cutting blocks cost-effective for total knee arthroplasty? Clin Orthop Relat Res. 2012;;470(3):889-894.

“Adjustable Cutting Blocks Improve Alignment and Surgical Time in Computer-assisted Total Knee Replacement”

E.M. Suero, C. Plaskos, P.L. Dixon, A.D. Pearle: Knee Surg Sports Traumatol Arthrosc. 2012 Sep; 20(9): 1736-41

Introduction: Computer navigation increases accuracy and precision of component alignment in total knee arthroplasty (TKA) compared to the manual technique, but is often associated with increases in surgical time. In a previous cadaver study, we demonstrated a significant improvement in guide positioning precision, final bone cut precision, and procedure length when using adjustable cutting blocks (ACB) compared to conventional cutting blocks (CCB) in computer-navigated TKA. The aim of this study was to evaluate the use of ACB in vivo.

Conclusion: ACB for TKA significantly reduced postoperative mechanical alignment variability and tourniquet time compared to conventional navigated instrumentation, while providing equal or better component alignment.


Disclaimers:

  • C. Plaskos is an employee of OMNIlife science, inc.
  • J.A. Koenig is a paid consultant for OMNIlife science, inc.
  • F.H. Schmidt is a paid consultant for OMNIlife science, inc.