PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

New research points to a possible gender link in knee injuries

2011-07-10
(Press-News.org) SAN DIEGO, CA – Gender may be associated with an increased risk of cartilage lesions in anterior cruciate ligament (ACL) injured knees, according to research being presented at the American Orthopaedic Society for Sports Medicine's Annual Meeting in San Diego.

"Having articular cartilage lesions (a hole or rough spot in the cartilage of the knee) is considered a predictor of future osteoarthritis-a debilitating joint condition," said lead author Jan Harald Roetterud, MD, from Akershus University Hospital, Lørenskog, Norway. "Our research is exciting because it highlights the possibility of gender as a significant risk factor, along with age, knee trauma and time between injury and surgery exceeding 1 year, in these types of injuries."

Researchers examined data from 15,783 patients (aged 8-69 years) undergoing primary ACL reconstructions between 2005 and 2008. Of these patients, 1,012 (6.4%) had full-thickness cartilage lesions, with 372 of the total occuring in females (5.6%) and 640 in the male population (7%).

Additional stress on cartilage around the knee following an ACL injury can cause full-thickness lesions. Treatment typically involves ACL reconstruction to relieve this pressure and hopefully protect the cartilage.

"The goal of this type of research is to continually identify risk factors for injury," Roetterud, commented. "With this information we will hopefully be able to improve prevention and treatment, as well as provide new guidelines for an athlete's return to sports."

Of additional note, male team handball players also showed a higher rate of full-thickness articular cartilage injuries compared to male athletes of other sports, though the explanation for this remains unclear.

### The American Orthopaedic Society for Sports Medicine (AOSSM) is a world leader in sports medicine education, research, communication and fellowship, and includes national and international orthopaedic sports medicine leaders. The Society works closely with many other sports medicine specialists, including athletic trainers, physical therapists, family physicians, and others to improve the identification, prevention, treatment, and rehabilitation of sports injuries. AOSSM is also a founding partner of the STOP Sports Injuries campaign to prevent overuse and traumatic injuries in kids. For more information on AOSSM or the STOP Sports Injuries campaign, visit www.sportsmed.org or www.stopsportsinjuries.org


ELSE PRESS RELEASES FROM THIS DATE:

Graft size and patient age may be predictor of need for future ACL revisions

2011-07-10
SAN DIEGO, CA – A smaller sized hamstring graft in an anterior cruciate ligament (ACL) reconstruction patient less than 20 years old may increase revision rates, according to research presented at the American Orthopaedic Society for Sports Medicine's Annual Meeting in San Diego today. "Hamstring grafts are commonly used in ACL reconstruction surgeries and vary in size, with the average being 8mm in diameter. Our research illustrated that when a patient was younger than 20 years old and had a graft of less than 8mm, they were more likely to have a future revision surgery," ...

Previous cancer history increases chances of clotting disorders after knee surgery, study suggests

2011-07-10
SAN DIEGO, CA – A history of cancer was a significant risk factor for developing blood clotting issues following knee arthroscopy, according to a study being presented at the American Orthopaedic Society for Sports Medicine's Annual Meeting in San Diego. Researchers from the Mayo Clinic in Rochester, Minnesota analyzed the records of more than 12,000 patients who had undergone the common knee procedure. "A history of malignancy has not been widely recognized as a significant risk factor for developing a VTE (venous thromboembolytic event) following knee arthroscopy," ...

Ancestry of polar bears traced to Ireland

Ancestry of polar bears traced to Ireland
2011-07-10
An international team of scientists has discovered that the female ancestor of all living polar bears was a brown bear that lived in the vicinity of present-day Britain and Ireland just prior to the peak of the last ice age -- 20,000 to 50,000 years ago. Beth Shapiro, the Shaffer Associate Professor of Biology at Penn State University and one of the team's leaders, explained that climate changes affecting the North Atlantic ice sheet probably gave rise to periodic overlaps in bear habitats. These overlaps then led to hybridization, or interbreeding -- an event that caused ...

A gene implicated in speech regulates connectivity of the developing brain

2011-07-10
Foxp2, a gene involved in speech and language, helps regulate the wiring of neurons in the brain, according to a study which will be published on July 7th in the open-access journal PLoS Genetics. The researchers identified this functional link by first identifying the major targets of Foxp2 in developing brain tissue and then analysing the function of relevant neurons. Foxp2 codes for a regulatory protein that provides a window into unusual aspects of brain function. In 2001, scientists discovered that mutations of the human gene cause a rare form of speech and language ...

To combat deadly brain cancer, target the stem cells

2011-07-10
Researchers have uncovered a new target that could stop the growth of glioblastoma, a deadly form of brain cancer. In the July 8th issue of the journal Cell, a Cell Press publication, a new study identifies an enzyme found in glioma stem cells that allows them to grow and seed tumors. Importantly, normal stem cells, including those in the brain, don't appear to share that same dependency. "When thinking about therapeutics [targeting cancer stem cells], you have to be careful that you aren't interfering with normal stem cells," said Christine Eyler of the Cleveland Clinic. ...

With climate changes, polar bear and brown bear lineages intertwine

2011-07-10
Polar bears' unique characteristics allow them to survive in one of the most extreme environments on Earth, but that survival is now threatened as rising temperatures and melting ice reshape the Arctic landscape. Now it appears that the stress of climate change, occurring both long ago and today, may be responsible for surprising twists in the bears' history and future as well. According to DNA evidence reported in the July 7th Current Biology, a Cell Press publication, polar bears and brown bears have mated successfully many times in the last 100,000 years. As a result ...

Stem cell injections may offer hope to patients with no other options

2011-07-10
An injection of stem cells into the heart could offer hope to many of the 850,000 Americans whose chest pain doesn't subside even with medicine, angioplasty or surgery, according to a study in Circulation Research: Journal of the American Heart Association. Patients who received the new treatment reported half as many chest pain episodes and improved exercise capability compared to those who received a placebo. The study was the first randomized, controlled trial of stem-cell therapy to show significant improvements in both chest pain and exercise tolerance – the two ...

Sex works thanks to ever-evolving host, parasite relationships

2011-07-10
BLOOMINGTON, Ind. -- It seems we may have parasites to thank for the existence of sex as we know it. Indiana University biologists have found that, although sexual reproduction between two individuals is costly from an evolutionary perspective, it is favored over self-fertilization in the presence of coevolving parasites. Sex allows parents to produce offspring that are more resistant to the parasites, while self-fertilization dooms populations to extinction at the hands of their biological enemies. The July 8 report in Science, "Running with the Red Queen: Host-Parasite ...

Unexpected cell repairs the injured spinal cord

2011-07-10
Lesions to the brain or spinal cord rarely heal fully, which leads to permanent functional impairment. After injury to the central nervous system (CNS), neurons are lost and largely replaced by a scar often referred to as the glial scar based on its abundance of supporting glial cells. Although this process has been known to science for over a century, the function of the scar tissue has long been disputed. However, there are indications that it stabilizes the tissue and that it inhibits the re-growth of damaged nerve fibres. In this present study, Professor Jonas Frisén ...

Heart disease and stroke worldwide tied to national income

2011-07-10
An analysis of heart disease and stroke statistics collected in 192 countries by the World Health Organization (WHO) shows that the relative burden of the two diseases varies widely from country to country and is closely linked to national income, according to researchers at the University of California, San Francisco. Reporting this week in the journal Circulation, the UCSF scientists found that developing countries tend to suffer more death and disability by stroke than heart disease – opposite the situation in the United States and other countries with higher national ...

LAST 30 PRESS RELEASES:

Scientists develop strategy to improve flexible tandem solar cell performance

Pushing boundaries: Detecting the anomalous Hall effect without magnetization in a new class of materials

Generative AI’s diagnostic capabilities comparable to non-specialist doctors

Some patients may experience durable disease control even after discontinuing immune checkpoint inhibitors for side effects

Native American names extend the earthquake history of northeastern North America

Lake deposits reveal directional shaking during devastating 1976 Guatemala earthquake

How wide are faults?

Key enzyme in lipid metabolism linked to immune system aging

Improved smoking cessation support needed for surgery patients across Europe

Study finds women much more likely to be aware of and have good understanding of obesity drugs

Study details role of protein that may play a key role in the development of schizophrenia

Americans don’t think bird flu is a threat, study suggests

New CDC report shows increase in autism in 2022 with notable shifts in race, ethnicity, and sex

Modulating the brain’s immune system may curb damage in Alzheimer’s

Laurie Manjikian named vice president of rehabilitation services and outpatient operations at Hebrew SeniorLife

Nonalcoholic beer yeasts evaluated for fermentation activity, flavor profiles

Millions could lose no-cost preventive services if SCOTUS upholds ruling

Research spotlight: Deer hunting season linked to rise in non-hunting firearm incidents

Rice scientists uncover quantum surprise: Matter mediates ultrastrong coupling between light particles

Integrative approach reveals promising candidates for Alzheimer’s disease risk factors or targets for therapeutic intervention

A wearable smart insole can track how you walk, run and stand

Research expands options for more sustainable soybean production

Global innovation takes center stage at Rice as undergraduate teams tackle health inequities

NIST's curved neutron beams could deliver benefits straight to industry

Finding friendship at first whiff: Scent plays role in platonic potential

Consortium of Multiple Sclerosis Centers releases 2025 expert panel document on best practices in MS management

A cool fix for hot chips: Advanced thermal management technology for electronic devices

Does your brain know you want to move before you know it yourself?

Bluetooth-based technology could help older adults stay independent

Breaking the American climate silence

[Press-News.org] New research points to a possible gender link in knee injuries