CClinicalTrials.gg
CompletedNCT01072019Cutting BlockUpdated Jun 27, 2018

A Randomized Prospective Trial of Total Knee Arthroplasty Options Comparing Standard Knee Cutting Guides and MRI Generated Patient Specific Custom Cutting Guides

An interventional study of Instrument in Osteoarthritis of the Knee, sponsored by Washington University School of Medicine. Completed at 1 site in United States. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2018-06-27.

Sponsored by Washington University School of Medicine · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
25
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Study summary

The purpose of this study is to determine the surgical and clinical outcomes of patients receiving total knee replacement with the same implant using two different types of cutting guides during surgery:

  1. Standard knee cutting guides;
  2. MRI generated patient specific custom cutting guides.

Both types of cutting guides used in this study are registered with the U.S. Food and Drug Administration (FDA) and are routinely used for knee replacement surgery. However, it is unknown if one type of cutting guide has risks or benefits over the other.

02

Conditions studied

  • Osteoarthritis of the Knee
03

In context

Osteoarthritis, Knee

3,302 studies on the registry are indexed under Osteoarthritis, Knee; 608 are open to participants now.

This study's enrollment of 25 is below the median of 70 across 2,731 interventional studies indexed under Osteoarthritis, Knee.

Browse Osteoarthritis, Knee studies →

Lead sponsor

Washington University School of Medicine is the lead sponsor of 1,765 studies on the registry; 271 are open to participants now.

Of its 324 completed or terminated interventional studies of FDA-regulated products, 212 (65%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Age 18 - 75
  • Diagnosis of osteoarthritis of the knee and qualify for surgery, as indicated by one of the following:
  • Painful and disabled knee joint resulting from osteoarthritis where one or more compartments are involved;
  • Correction of varus or valgus.
  • Willing to participate and return for follow-up study visits.

Exclusion criteria

Exclusion Criteria:

  • Infection
  • Sepsis
  • Osteomyelitis
  • Uncooperative patient or patient with neurologic disorders who is incapable of following directions
  • Osteoporosis
  • Metabolic disorders which may impair bone formation
  • Osteomalacia
  • Distant foci of infections which may spread to the implant site
  • Rapid joint destruction
  • Marked bone loss or bone resorption apparent on roentgenogram
  • Vascular insufficiency
  • Muscular atrophy
  • Neuromuscular disease
  • Incomplete or deficient soft tissue surrounding the knee
  • Previous osteotomy
  • Diagnosis of rheumatoid arthritis
  • Previous patella fracture or surgery
  • Previous healed tibia or femur fractures
  • Previous joint replacement surgery
  • Cannot have an MRI
  • Patients receiving single-stage bilateral total knee arthroplasty (TKA)
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
25 participants (actual)

Study arms

  • Active comparator
    Standard knee cutting guides

    Standard cutting guides use traditional instrumentation to determine knee implant positions. During surgery, a rod is placed in the leg bone and the cutting guide is attached to that rod.

    Other: Instrument

  • Active comparator
    MRI generated patient specific custom cutting guides

    Patient specific cutting guides are custom-made for each patient based on Magnetic Resonance Imaging (MRI). Before surgery, MRI of the knee is done and used to create a cutting guide that is formed to the exact shape of the knee. The patient specific cutting guides have platforms that can be attached to the bone, so the rod does not need to be placed in the leg bone.

    Other: Instrument

Interventions

  • OtherInstrument

    Randomization to instrumentation to be used for primary total knee replacement; either standard knee cutting guides or MRI generated patient specific custom cutting guides.

    Also known as: Vanguard® Knee System, Signature™ Custom Guides

06

What researchers measure

Primary outcomes

  1. Patient dissatisfaction following primary total knee replacement.

    Time frame: Preoperatively, intraoperatively, and at four to six weeks, three months, six months, and one year postoperatively.

Secondary outcomes

  1. Postoperative recovery time following primary total knee replacement.

    Time frame: Immediate postoperative period (prior to discharge) and at four to six weeks, three months, six months, and one year postoperatively.

07

Study locations

1 site
  • Washington University
    Saint Louis, Missouri 63110, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 27, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01072019
Lead sponsor
Washington University School of Medicine
Collaborators
Zimmer Biomet
Responsible party
Sponsor
First posted
Feb 19, 2010
Start date
Mar 2010
Primary completion
May 2014
Completion
May 2014
Last update
Jun 27, 2018

Study contacts

Ryan M Nunley, MD
principal investigator · Washington University School of Medicine

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jun 2018. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion