Hybrid metal-on-metal surface arthroplasty of the hip has recently been introduced, with a vast number of implants used in European countries including Belgium. This article presents results in 252 hips with a mean follow-up of 2.8 years. Using a tight press-fit with minimal cement mantle as the technique of femoral fixation, there have been only three failures. The main complications have been avascular necrosis of the femoral head and femoral neck fracture. In most cases, patients returned to a high functional level with no restrictions in their physical activity and were highly satisfied. Future refinements in surgical technique and instruments will make this procedure more accessible and reproducible for the surgeon.
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Article Synopsis
- Metallosis can occur not just in Metal-on-Metal (MoM) hip replacements, but also in metal-on-polyethylene (PE) articulations, making diagnosis challenging.
- A case study of a 35-year-old woman showed that after experiencing recurrent dislocation four years post-surgery, intraoperative metallosis was confirmed during revision surgery after changes to her hip implant.
- Early detection of metallosis is crucial, as subtle signs can easily be overlooked, and prompt treatment can prevent further complications like osteolysis and soft tissue damage.
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