Metal-metal Articulations Versus Standard 28 mm Cementless Total Hip Arthroplasty

2014-08-27 03:14:05 | BioPortfolio


Younger hip patients often need revision of their hip replacement due to wear and loosening. Newer concepts (resurfacing and large head total hip replacement) with articulation surfaces in metal may reduce the wear, increase the longevity of the implant and give an improved function. The possible downside is that these concepts releases metal debris to the body. The investigators wish to see if the newer interventions are a clinical improvement compared to standard. The investigators also wish to investigate the extent of metal released to the body and any effect on the immune system. Finally the investigators wish to investigate the stability of these new implants and their ability to preserve the bone around the implant.

The investigators hypothesis is:

That the metal on metal articulations will not have better clinical outcomes than standard The resurfacing implant is expected to preserve the bone of the upper femoral bone. The implants are expected to be stabile within the first year.

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment


Osteoarthritis, Hip


articular surface replacement ASR, DePuy, ReCap/Magnum modular head, Biomet, Bimetric stem, mallory/head cup, 28 mm ceramic head, Biomet, 28 mm CrCo head, Trilogy CH cup, VerSys Fiber stem,Zimmer)


Naestved Hospital Dept. of orthop. surg.


Active, not recruiting


University of Southern Denmark

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:14:05-0400

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Medical and Biotech [MESH] Definitions

The hemispheric articular surface at the upper extremity of the thigh bone. (Stedman, 26th ed)

Measurements of joint flexibility (RANGE OF MOTION, ARTICULAR), usually by employing an angle-measuring device (arthrometer). Arthrometry is used to measure ligamentous laxity and stability. It is often used to evaluate the outcome of ANTERIOR CRUCIATE LIGAMENT replacement surgery.

The joint that is formed by the inferior articular and malleolar articular surfaces of the TIBIA; the malleolar articular surface of the FIBULA; and the medial malleolar, lateral malleolar, and superior surfaces of the TALUS.

Fractures of the articular surface of a bone.

The articulation between the articular surface of the PATELLA and the patellar surface of the FEMUR.

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