NCT03447626

Brief Summary

The purposes of this investigation is to 1) To determine if Robotic-arm assisted UKA (RA-UKA) allows for more accurate component placement than manual UKA (MI-UKA)and 2) prospectively assess the learning curve, radiographic, and clinical outcomes of use of the RIO system as it is incorporated into our clinical practice and compare it to historical data on manual UKAs and TKAs.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
486

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Feb 2019

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

December 11, 2017

Completed
3 months until next milestone

First Posted

Study publicly available on registry

February 27, 2018

Completed
12 months until next milestone

Study Start

First participant enrolled

February 12, 2019

Completed
1.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 12, 2020

Completed
3.3 years until next milestone

Study Completion

Last participant's last visit for all outcomes

April 7, 2024

Completed
Last Updated

May 9, 2024

Status Verified

May 1, 2024

Enrollment Period

1.8 years

First QC Date

December 11, 2017

Last Update Submit

May 7, 2024

Conditions

Outcome Measures

Primary Outcomes (1)

  • Post Op EOS measurements for alignment

    To determine if Robotic-arm assisted UKA (RA-UKA) allows for more accurate component placement than manual UKA (MI-UKA). units of measurement will be inches.

    1 day- post op

Study Arms (3)

Prospective Group- Robotic UKA Arm

Robotic UKA with the MAKO machine.

Device: MAKO Robotic UKA

Control- Fixed and Mobile UKA Arm

Patients who have received fixed or mobile bearing UKA

Control-Total Knee Arthroplasty

Patients who have had cemented or cementless total knee arthroplasty

Interventions

Prospective UKA patient receiving unilateral knee arthroplasty using the MAKO robotic machine

Prospective Group- Robotic UKA Arm

Eligibility Criteria

Age18 Years - 75 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Unilateral arthroplasty knee patients and total Knee arthroplasty patients

You may qualify if:

  • All patients who receive a robotic arm assisted UKA using the RIO navigation system will be prospectively included. All patients who have received a medial fixed or mobile UKA performed by surgeons in the Joint Preservation, Resurfacing, and Replacement Service at Washington University will be retrospectively reviewed. Also, all TKAs from a pervious study (IRB 201308057) performed by surgeons in the Joint Preservation, Resurfacing, and Replacement Service at Washington University will be retrospectively reviewed as well.
  • Patient is willing and able to comply with postoperative follow-up requirements and self-evaluations
  • Patient is willing to sign an IRB approved informed consent
  • Patient is at least 18 years of age

You may not qualify if:

  • Patient has a BMI \< 40
  • Patient is skeletally immature
  • Patient has an active infection or suspected infection in or about the joint
  • Bone stock that is inadequate to support fixation of the prosthesis
  • Neuromuscular disorders, muscular atrophy or vascular deficiency in the affected limb rendering the procedure unjustified.
  • Patients with mental or neurological conditions which may be incapable of following instructions.
  • Blood supply limitations
  • Collateral ligament insufficiency.
  • Patients with prior HTOs or Unis.
  • Patients requiring bilateral knee arthroplasty.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Barnes Jewish Hospital

St Louis, Missouri, 63110, United States

Location

Related Publications (7)

  • Tsai TY, Dimitriou D, Liow MH, Rubash HE, Li G, Kwon YM. Three-Dimensional Imaging Analysis of Unicompartmental Knee Arthroplasty Evaluated in Standing Position: Component Alignment and In Vivo Articular Contact. J Arthroplasty. 2016 May;31(5):1096-101. doi: 10.1016/j.arth.2015.11.027. Epub 2015 Nov 30.

    PMID: 26730450BACKGROUND
  • Bell SW, Anthony I, Jones B, MacLean A, Rowe P, Blyth M. Improved Accuracy of Component Positioning with Robotic-Assisted Unicompartmental Knee Arthroplasty: Data from a Prospective, Randomized Controlled Study. J Bone Joint Surg Am. 2016 Apr 20;98(8):627-35. doi: 10.2106/JBJS.15.00664.

    PMID: 27098321BACKGROUND
  • Barrett WP, Scott RD. Revision of failed unicondylar unicompartmental knee arthroplasty. J Bone Joint Surg Am. 1987 Dec;69(9):1328-35.

    PMID: 3440791BACKGROUND
  • Cheng T, Chen D, Zhu C, Pan X, Mao X, Guo Y, Zhang X. Fixed- versus mobile-bearing unicondylar knee arthroplasty: are failure modes different? Knee Surg Sports Traumatol Arthrosc. 2013 Nov;21(11):2433-41. doi: 10.1007/s00167-012-2208-y. Epub 2012 Sep 25.

    PMID: 23007412BACKGROUND
  • Murray DW, Goodfellow JW, O'Connor JJ. The Oxford medial unicompartmental arthroplasty: a ten-year survival study. J Bone Joint Surg Br. 1998 Nov;80(6):983-9. doi: 10.1302/0301-620x.80b6.8177.

    PMID: 9853489BACKGROUND
  • Pandit H, Jenkins C, Gill HS, Smith G, Price AJ, Dodd CA, Murray DW. Unnecessary contraindications for mobile-bearing unicompartmental knee replacement. J Bone Joint Surg Br. 2011 May;93(5):622-8. doi: 10.1302/0301-620X.93B5.26214.

    PMID: 21511927BACKGROUND
  • Nam D, Berend ME, Nunley RM, Della Valle CJ, Berend KR, Lombardi AV, Barrack RL. Residual Symptoms and Function After Unicompartmental and Total Knee Arthroplasty: Comparable to Normative Controls? J Arthroplasty. 2016 Oct;31(10):2161-6. doi: 10.1016/j.arth.2016.02.064. Epub 2016 Mar 10.

MeSH Terms

Conditions

Arthritis

Condition Hierarchy (Ancestors)

Joint DiseasesMusculoskeletal Diseases

Study Design

Study Type
observational
Observational Model
CASE CONTROL
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

December 11, 2017

First Posted

February 27, 2018

Study Start

February 12, 2019

Primary Completion

December 12, 2020

Study Completion

April 7, 2024

Last Updated

May 9, 2024

Record last verified: 2024-05

Locations