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Results of hip resurfacing
- Publication Year :
- 2011
- Publisher :
- Springer-Verlag, 2011.
-
Abstract
- The renewed popularity of resurfacing hip arthroplasty in the last 10 years has generated a remarkable quantity of scientific contributions based on mid- and short-term follow-up. More than one paper has reported a consistent early revision rate as a consequence of biological or biomechanical failure. Two major complications are commonly described with resurfacing implants: avascular necrosis and femoral-neck fracture. A close relationship between these two events has been suggested, but not firmly demonstrated, whereas cementing technique seems to be better understood as potential cause of failure.We performed an in vitro study in which four different resurfacing implants were evaluated with a simulated femoral head, two types of cement, (low and high viscosity) and two cementing techniques: direct (cement apposition directly on the femoral head) and indirect (cement poured into the femoral component).High-viscosity cement showed homogeneous distribution over the entire femoral head. Low-viscosity cement showed a massive polar concentration with insufficient, if not absent, distribution in the equatorial zone.Polar cement concentration could be a risk factor for early implant failure due to two effects on the femoral head: biological (excessive local exothermic reaction could cause osteocyte necrosis) and biomechanical (which could lead to uneven load distribution on the femoral head).
- Subjects :
- Adult
Reoperation
medicine.medical_specialty
medicine.medical_treatment
Arthroplasty, Replacement, Hip
Dentistry
Avascular necrosis
In Vitro Techniques
Osteoarthritis, Hip
Femoral head
Postoperative Complications
Medicine
Humans
Orthopedics and Sports Medicine
Revision rate
Major complication
Cementation
Original Paper
business.industry
Osteonecrosis
Middle Aged
medicine.disease
Hip resurfacing
Surgery
Femoral Neck Fractures
Prosthesis Failure
Hip arthroplasty
medicine.anatomical_structure
Close relationship
Orthopedic surgery
Wounds and Injuries
Hip Prosthesis
business
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....c6a3a093cca3bd57794f627e2c90b5bb