What type of study is this?

This is a Human Clinical Trial study (also classified as: RCT).

What question did this study set out to answer?

To evaluate serum metal levels and patient-reported outcomes after total hip arthroplasty with different bearing types.

November 13, 2025Journal of Bone and Joint Surgery

A Randomized Controlled Trial of a Conventional Versus Modular Dual-Mobility Bearing

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To evaluate serum metal levels and patient-reported outcomes after total hip arthroplasty with different bearing types.
Randomized controlled trial design
Participants with osteoarthritis undergoing primary THA were assigned to either modular dual-mobility or conventional polyethylene bearing
Serum cobalt and chromium levels measured preoperatively and annually for 5 years after surgery.
No significant differences in serum cobalt levels between cohorts at 2 years postoperatively
No significant differences in serum chromium levels at 2 years postoperatively
Modest expected elevations in cobalt and chromium levels were observed, but within safe reference ranges.

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Implication

Randomized controlled trial shows no difference in cobalt or chromium levels in total hip arthroplasty patients, indicating outcomes are similar for dual-mobility bearings.

Cite This Study

DeBenedetti et al. (2025) studied this question.

synapsesocial.com/papers/692523c1c0ce034ddc354c49 https://doi.org/10.2106/jbjs.24.01479

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Implication

Randomized controlled trial shows no difference in cobalt or chromium levels in total hip arthroplasty patients, indicating outcomes are similar for dual-mobility bearings.

A Randomized Controlled Trial of a Conventional Versus Modular Dual-Mobility Bearing

Key Points

Discussion

Implication

Cite This Study

A Randomized Controlled Trial of a Conventional Versus Modular Dual-Mobility Bearing

Key Points

Discussion

Implication

Cite This Study

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