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Sigma CR150 Versus Sigma CR Knee RCT

NCT01418378 · Status: COMPLETED · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 191

Last updated 2019-08-28

Study results available
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Summary

This study will compare two very similar designs of knee replacement device. One device (Sigma CR150) is a slightly modified version of the original (Sigma CR) and has been modified to enhance/accommodate higher flexion. The original device has been in widespread clinical use with excellent results since 1996 and this study will determine whether the design modifications of the newer device add further value. The newer device has been in clinical use with good short-term(unpublished) outcomes since becoming commercially available in January 2009.

Achieving higher knee flexion may be required for cultural reasons or by the increasingly younger, more active patient population undergoing knee replacement today. In addition to promoting flexion, it is also possible that this design change may help the knee replacement to last longer than traditional implants in patients who achieve higher flexion. Therefore, the study will compare the two devices in terms of survivorship, flexion and other measures of the success of a total knee replacement (range of motion, knee-related quality of life, activity and generic quality of life) over the short-term.

A minimum of one hundred and forty subjects (minimum 70 per group) with osteoarthritis and aged 50-75 years will be included at UK/international hospitals.

Study duration is 2 years and patients will complete standard knee outcome scores plus radiological evaluation.

Subjects would receive one of the study devices regardless of their involvement in the study, and apart from (possible)additional visits, x-rays and/or questionnaires, treatment and follow-up care will be as per the care they would receive outside of the study.

Conditions

Interventions

DEVICE

Sigma CR150

Sigma CR150 femoral component used in combination with the Highly Polished Cobalt Chrome fixed bearing tibial tray and the Curved (XLK) polyethylene bearing (cemented, no patellar resurfacing).

DEVICE

Sigma CR

Sigma CR femoral component used in combination with the Highly Polished Cobalt Chrome fixed bearing tibial tray and the Curved (XLK) polyethylene bearing (cemented, no patellar resurfacing).

Sponsors & Collaborators

  • DePuy International

    lead INDUSTRY

Principal Investigators

  • Gautam Chakrabarty, FRCS Orth. · Calderdale and Huddersfield Foundation NHS Trust

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
50 Years
Max Age
75 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2011-08-03
Primary Completion
2016-02-17
Completion
2016-02-17

Countries

  • India
  • Singapore
  • United Kingdom

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 NCT01418378 on ClinicalTrials.gov