CClinicalTrials.gg
CompletedNCT01367925Updated Dec 13, 2017

Stryker Triathlon® Cruciate Substituting vs. Posterior Stabilized Outcomes Study

An observational study in Osteoarthritis, Knee, sponsored by Spokane Joint Replacement Center. Completed at 1 site in United States. Open to participants aged 20 Years to 80 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2017-12-13.

Sponsored by Spokane Joint Replacement Center · Observational

Study type
Observational
Model
Case-control
Time perspective
Prospective
Enrollment
125
Ages
20 Years to 80 Years
Sex
All
01

Study summary

This study compares the clinical and radiographic outcomes obtained with the use of the Stryker Triathalon® Cruciate Substituting (CS) and Posterior Stabilized (PS) tibial inserts.

02

Conditions studied

  • Osteoarthritis, Knee

Keywords

  • Osteoarthritis
  • Total Knee Replacement
  • TKA
  • Knee
  • PS
  • CS
03

In context

Osteoarthritis

4,398 studies on the registry are indexed under Osteoarthritis; 582 are open to participants now.

This study's enrollment of 125 is above the median of 100 across 791 observational studies indexed under Osteoarthritis.

Browse Osteoarthritis studies →

Lead sponsor

Spokane Joint Replacement Center is the lead sponsor of 5 studies on the registry; 1 is open to participants now.

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

04

Who can participate

Ages eligible
20 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Probability sample

Study population

Adult patients undergoing total knee arthroplasty

Inclusion criteria

  • Adults ages 20-80 years old
  • Body mass index \<40
  • Undergoing primary total knee arthroplasty for osteoarthritis of the knee

Exclusion criteria

Exclusion Criteria:

  • Inflammatory arthritis
  • Revisions

Other criteria may apply

05

Study design

Observational model
Case-control
Time perspective
Prospective
Enrollment
125 participants (actual)

Groups and cohorts

  • Cruciate Substituting Tibial Insert

    Device: Stryker Triathlon® CS Tibial Insert

  • Posterior Stabilized Tibial Insert

    Device: Stryker Triathlon® PS Tibial Insert

Interventions

  • DeviceStryker Triathlon® CS Tibial Insert
  • DeviceStryker Triathlon® PS Tibial Insert
06

What researchers measure

Primary outcomes

  1. Clinical outcomes, Knee Society Score

    Clinical outcomes to include overall success, failure rate, revison rate, clinical scores (Knee Society Score), range of motion, pain, stability, radiographic success

    Time frame: Pre-operative, 6 weeks, 6 months, 1, 2, 3, 4, and 5 years post-operative

07

Study locations

1 site
  • Spokane Joint Replacement Center
    Spokane, Washington 99218, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 13, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01367925
Lead sponsor
Spokane Joint Replacement Center
Responsible party
David F. Scott, MD (PI, Spokane Joint Replacement Center) — Principal investigator
First posted
Jun 7, 2011
Start date
Dec 2007
Primary completion
Jul 2016
Completion
Jul 2016
Last update
Dec 13, 2017

Study contacts

David F Scott, MD
principal investigator · Spokane Joint Replacement Center

Oversight

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

Not currently enrolling

This study is completed, as verified in Dec 2017. 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