A Comparison of Large Diameter Metal Heads vs. Small Diameter Metal Heads vs/ Dual Mobility Total Hip Replacements

N/ACompletedNCT02049892

Mayo Clinic80 enrolled

Overview

Does having a large diameter metal on polyethylene total hip replacement increase metal ion release. Larger metal heads are thought to have increased torsional forces on the trunion which would like release more metal ions. Increased metal ion levels have been associated with adverse local tissue reactions. Are there any differences comparing these groups to a dual mobility type total hip replacement.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Total Hip Replacement

Interventions

Metal Ion LevelsOTHER

Eligibility

Sex: ALLMin age: 18 YearsMax age: 100 Years

Medical Language ↔ Plain English

Inclusion Criteria: * One total hip replacement, either a large metal head (\>40) or a small metal head (\<30) on a polyethylene bearing surface. * 2 to 5 years s/p surgery minimum. No symptoms Exclusion Criteria: * Any other bearing surface besides metal on poly, no other joint replacements, symptomatic

Locations (1)

Mayo Clinic

Rochester, Minnesota, United States

Outcomes

Primary Outcomes

Metal Ion levels

We would like to determine a difference in metal ion levels on metal on polyethylene total hip replacement

Time frame: 2 years

Data from ClinicalTrials.gov

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