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Application of Radiostereometric Analysis (RSA) to Triathlon Knee Components Inserted Using the OtisMed Custom-fit Total Knee Replacement System

NCT01262430 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 52

Last updated 2020-08-21

No results posted yet for this study

Summary

The OtisMed Custom-fit system for total knee replacements replaces conventional surgical techniques for templating and intra-operative instrumentation with a preoperative virtual surgery process that utilizes 3D models of the affected knee from a pre-operative MRI or CT image. The 3D model of the affected knee is processed with a proprietary algorithm that virtually alters it to its pre-arthritic state by filling articular defects, removing osteophytes, and approximating the joint surface. The software then shape matches the knee replacement femoral and tibial components to the preathritic knee model and aligns the femoral component to the functional flexion-extension axis of the femur. The final preoperative step is the machining of custom biocompatible plastic cutting blocks that fit the arthritic knee. These cutting blocks are used during the knee replacement surgery to guide the bone cuts so that the replacement components are aligned for the individual patient.

In this study we propose to compare patients who have received total knee replacement components with the OtisMed Custom-fit procedure to those who have had the same components implanted in the conventional manner with Computer Assisted Surgery (CAS). The primary outcome will be micromotion of tibial and femoral implants at 1 and 2 years after surgery. Secondary outcomes will include subjective outcomes, accelerometric gait analysis, bone mineral density, full leg alignment, change in intra-operative frontal plane alignment, intra-operative deviations from the surgical plan, surgery duration, OR turnover time, number of instrument pans used, and length of hospital stay.

Conditions

Interventions

PROCEDURE

OtisMed

OtisMed Custom-fit Shapematching Guides

PROCEDURE

Computer Assisted Surgery (CAS)

Stryker Navigation System

Sponsors & Collaborators

  • Dalhousie University

    lead OTHER

Principal Investigators

  • Michael Dunbar · Dalhousie University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
21 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2011-04-30
Primary Completion
2015-08-31
Completion
2019-12-31

Countries

  • Canada

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01262430 on ClinicalTrials.gov