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!
New study first to predict which oil and gas wells are leaking methane
21.12.2018 | University of Vermont
Droughts boost emissions as hydropower dries up
21.12.2018 | Stanford's School of Earth, Energy & Environmental Sciences
The scientific and political community alike stress the importance of German Antarctic research
Joint Press Release from the BMBF and AWI
The Antarctic is a frigid continent south of the Antarctic Circle, where researchers are the only inhabitants. Despite the hostile conditions, here the Alfred...
World first experiments on sensor that may revolutionise everything from medical devices to unmanned vehicles
The new sensor - capable of detecting vibrations of living cells - may revolutionise everything from medical devices to unmanned vehicles.
Dead and alive at the same time? Researchers at the Max Planck Institute of Quantum Optics have implemented Erwin Schrödinger’s paradoxical gedanken experiment employing an entangled atom-light state.
In 1935 Erwin Schrödinger formulated a thought experiment designed to capture the paradoxical nature of quantum physics. The crucial element of this gedanken...
Cellulose obtained from wood has amazing material properties. Empa researchers are now equipping the biodegradable material with additional functionalities to produce implants for cartilage diseases using 3D printing.
It all starts with an ear. Empa researcher Michael Hausmann removes the object shaped like a human ear from the 3D printer and explains:
The phenomenon of so-called superlubricity is known, but so far the explanation at the atomic level has been missing: for example, how does extremely low friction occur in bearings? Researchers from the Fraunhofer Institutes IWM and IWS jointly deciphered a universal mechanism of superlubricity for certain diamond-like carbon layers in combination with organic lubricants. Based on this knowledge, it is now possible to formulate design rules for supra lubricating layer-lubricant combinations. The results are presented in an article in Nature Communications, volume 10.
One of the most important prerequisites for sustainable and environmentally friendly mobility is minimizing friction. Research and industry have been dedicated...
16.01.2019 | Event News
14.01.2019 | Event News
12.12.2018 | Event News
18.01.2019 | Materials Sciences
18.01.2019 | Life Sciences
18.01.2019 | Health and Medicine