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

Completed

Conditions studied: Total Hip Replacement

In brief

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.

Key facts

Study ID

NCT02049892

Run by

Mayo Clinic

People needed

80

Starts

2013-12-01

Expected to finish

2016-02-01

Last updated by the study team

2017-12-05

Who can join

Age: 18 and older, up to 100. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• 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

You may not qualify if…

• Any other bearing surface besides metal on poly, no other joint replacements, symptomatic

Where it is running

• Mayo Clinic — Rochester, Minnesota, United States

Full record on ClinicalTrials.gov

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