However, a new study presented today at the 2013 Annual Meeting of the American Academy of Orthopaedic Surgeons (AAOS) finds that a specialized prosthesis may not improve overall outcomes in female total knee replacement (TKR) patients.
Female implants are narrower, with an atypical angle and a thinner anterior flange (front rim), reflecting the unique characteristics of the female knee. These knee components are used frequently in TKR procedures in women, who represent 60 percent of all TKR patients.
In the study, researchers evaluated 1957 TKRs between 2006 and 2010 in women with 1515 (77.4 percent) utilizing female specific implants, compared to 771 TKRs from 2002 to 2006 prior to the availability of the gender component. Radiographs were reviewed for component fit, and clinical outcomes.
While there was less overhang of the knee implant with use of the female-specific prosthesis, improvements in patient knee range of motion, knee flexion (how far you can bend your knee), lateral release rates (reflecting kneecap movement), and pain scores were comparable in each of the two groups.
“While we certainly use (the female components) frequently (in surgery), we don’t detect any objective improvement in clinical outcomes, including pain scores and range of motion,” said lead study author and orthopaedic surgeon, Alexander P. Sah, MD. “At the same time, there was no detectable disadvantage of using the implant, such as increased blood loss or component migration.
“Benefits of using the gender-specific component may not be detectable by current measures, or may not exist at all. However, the additional size option definitely provides the surgeon with more flexibility during surgery and that is useful,” said Dr. Sah.
For more information on bone and joint health, visit Orthoinfo.org
Lauren Pearson Riley | EurekAlert!
The Great Unknown: Risk-Taking Behavior in Adolescents
19.01.2017 | Max-Planck-Institut für Bildungsforschung
A sudden drop in outdoor temperature increases the risk of respiratory infections
11.01.2017 | University of Gothenburg
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
20.01.2017 | Awards Funding
20.01.2017 | Materials Sciences
20.01.2017 | Life Sciences