Evaluation of the Wear of Vitamin E Treated Polyethylene Components in Primary THA Using RSA

Status unconfirmed · Not applicable

Conditions studied: Osteoarthritis of Hip, Traumatic Arthritis of Hip

In brief

The specific aim of this proposed study is to conduct a prospective RSA clinical study at Massachusetts General Hospital involving 50 patients receiving primary total hip replacements. All patients will receive the vitamin E treated polyethylene acetabular inserts. Short-term femoral head penetration and long-term steady state wear of the polyethylene will be measured using both RSA and Martell analysis techniques. Stability of the acetabular and femoral components will be measured in all patients using RSA analysis. The stability of the cemented femoral stems will be compared to the stability of the cementless femoral components as well as to historic data in the literature. In addition, all patients will complete a self-administered questionnaire to assess the clinical outcome of the surgery and patient satisfaction.

Key facts

Study ID

NCT00551967

Run by

Massachusetts General Hospital

People needed

50

Starts

2007-10-01

Expected to finish

2022-12-01

Last updated by the study team

2017-05-03

Who can join

Age: 20 and older, up to 75. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Male or female
• 20 to 75 years of age
• Subjects requiring primary total hip replacement
• Subjects with diagnosis of osteoarthritis, avascular necrosis, or traumatic arthritis
• Subjects who demonstrate the ability to return to MGH for follow-up for the next five years.

You may not qualify if…

• Subjects with limited life span
• Subjects with difficulty in comprehending study protocol for any reason.
• Subjects with inflammatory disease, previous infection or those requiring revision hip surgery.
• Subjects whose bony structures are so small that a femoral head less than 32mm in diameter must be used.
• Subjects whose bony structure deviates substantially from the general norm sufficiently to require non-standard techniques and non-standard implants. Specific examples of these are total dislocation of the hip, severe coxa vera deformity, severe forms of multiple epiphyseal dysplasia
• Subjects with complex disease entities which significantly increase the risks of the surgery such as any major platelet abnormality, hematological disorder, positive for HIV or any other major medical complication which substantially reduces longevity.
• Female subjects that are pregnant or who may suspect they are pregnant or who plan to become pregnant while participating in this study.

Where it is running

• Massachusetts General Hospital — Boston, Massachusetts, United States

Full record on ClinicalTrials.gov

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