Robotic-assisted total knee arthroplasty with the OMNIBot platform: a review of the principles of use and outcomes

J Shatrov; G T Murphy; J Duong; B Fritsch

doi:10.1007/s00402-021-04173-8

Robotic-assisted total knee arthroplasty with the OMNIBot platform: a review of the principles of use and outcomes

Arch Orthop Trauma Surg. 2021 Dec;141(12):2087-2096. doi: 10.1007/s00402-021-04173-8. Epub 2021 Oct 15.

Authors

J Shatrov¹, G T Murphy², J Duong², B Fritsch^{3

4}

Affiliations

¹ Sydney Orthopaedic Research Institute, Chatswood, Australia. jobeshatrov1@gmail.com.
² University of New South Wales, Kensington, Australia.
³ Sydney Orthopaedic Research Institute, Chatswood, Australia.
⁴ Royal Prince Alfred Hospital, Sydney, Australia.

PMID: 34652515
DOI: 10.1007/s00402-021-04173-8

Abstract

Introduction: Technology that enables the orthopaedic surgeon to deliver a surgical plan with precision and reproducibility continues to evolve. Robotic TKA represents the next phase of technological development in knee arthroplasty. Multiple propriety robotic platforms are now available for use in TKA, and one such system is the OMNIBotics platform. We conducted a review of this system, reporting its history and principles of use, published outcomes and our own personal experience performing OMNI robotic-assisted TKAs.

Materials and methods: A literature review was conducted using the PRISMA guidelines. Thirteen papers were included for the final review.

Results: The OMNIBot is an accurate and consistent delivery tool in TKA surgery and compares favourably to instrumented, navigation-assisted and patient-specific cutting guides. The OMNIBot has been shown to be a reliable tool for delivering different alignment philosophies as well as planning and achieving tibio-femoral coronal balancing. The utility of the system is increased when the robot is used in conjunction with a soft-tissue tensioning device-the BalanceBot. Data regarding PROM's are limited, however results to date show reliable outcomes. Survival analysis of RATKA using the OMNIBot is limited to one study which reported 99.26% survivorship at 3 years. We report our own outcomes using the OMNIBot, having performed 766 TKA's using the OMNIBot, since 2014 with 99.48% survivorship at 6 year follow-up.

Conclusion: The OMNIBot platform is an imageless, passive robotic system available since 2007, with over 30,000 TKA's being performed with its assistance. It has a small physical footprint, is relatively inexpensive and time efficient. Our review demonstrates a high level of precision of the surgical planning, with a modestly improved accuracy compared to conventional and navigation technology. Published outcomes are limited, however demonstrate good short-term PROM's and survivorship data that compare favourably to other robotic TKA cohorts.

Keywords: Joint replacement; OMNIBot; Robotic-assisted knee arthroplasty; Robotics; Total knee arthroplasty.

Publication types

Review

MeSH terms

Arthroplasty, Replacement, Knee*
Humans
Knee Joint / surgery
Range of Motion, Articular
Reproducibility of Results
Robotic Surgical Procedures*