Hip implants a bit more likely to fail in women

CHICAGO (AP) — Hip replacements are slightly more likely to fail in women than in men, according to one of the largest studies of its kind in U.S. patients. The risk of the implants failing is low, but women were 29 percent more likely than men to need a repeat surgery within the first three years.

The message for women considering hip replacement surgery remains unclear. It's not known which models of hip implants perform best in women, even though women make up the majority of the more than 400,000 Americans who have full or partial hip replacements each year to ease the pain and loss of mobility caused by arthritis or injuries.

"This is the first step in what has to be a much longer-term research strategy to figure out why women have worse experiences," said Diana Zuckerman, president of the nonprofit National Research Center for Women & Families. "Research in this area could save billions of dollars" and prevent patients from experiencing the pain and inconvenience of surgeries to fix hip implants that go wrong.

Researchers looked at more than 35,000 surgeries at 46 hospitals in the Kaiser Permanente health system. The research, published Monday in JAMA Internal Medicine, was funded by the U.S. Food and Drug Administration.

After an average of three years, 2.3 percent of the women and 1.9 percent of the men had undergone revision surgery to fix a problem with the original hip replacement. Problems included instability, infection, broken bones and loosening.

"There is an increased risk of failure in women compared to men," said lead author Maria Inacio, an epidemiologist at Southern California Permanente Medical Group in San Diego. "This is still a very small number of failures."

Women tend to have smaller joints and bones than men, and so they tend to need smaller artificial hips. Devices with smaller femoral heads — the ball-shaped part of the ball-and-socket joint in an artificial hip — are more likely to dislocate and require a surgical repair.

That explained some, but not all, of the difference between women and men in the study. It's not clear what else may have contributed to the gap. Co-author Dr. Monti Khatod, an orthopedic surgeon in Los Angeles, speculated that one factor may be a greater loss of bone density in women.

The failure of metal-on-metal hips was almost twice as high for women than in men. The once-popular models were promoted by manufacturers as being more durable than standard plastic or ceramic joints, but several high-profile recalls have led to a decrease in their use in recent years.

"Don't be fooled by hype about a new hip product," said Zuckerman, who wrote an accompanying commentary in the medical journal. "I would not choose the latest, greatest hip implant if I were a woman patient. ... At least if it's been for sale for a few years, there's more evidence for how well it's working."

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Journal: http://www.jamainternalmed.com

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Russian Meteor: Close Encounter, Preventing Impacts

Feb 18, 2013 7:03pm

MOSCOW — As if Friday’s massive meteor explosion over central Russia weren’t enough, just hours later a large asteroid buzzed dangerously close to Earth.

And that evening, the California sky was lit up by a fireball, apparently entering Earth’s atmosphere.

It’s a barrage from space that has people asking: Are we ready for the big one?

Nearly 100 tons of space debris enters Earth’s atmosphere every day. Most of it burns up or falls harmlessly into the ocean, but experts still worry that eventually something big will come our way.

PHOTOS: Meteorite Crashes in Russia

Image credit: Chelyabinsk Region Branch of Russian Interior Ministry/HO/EPA

The prospect of Earth getting hit by a giant hunk of space rock is concerning enough that the United Nations is gathering top minds in Italy this week to discuss it.

Scientists say the idea of blowing up an asteroid — as Bruce Willis’ character did in the movie “Armageddon” — is pure Hollywood fantasy. Even if we could hit it, it’s unlikely to stop it.

Existing sky-watching programs run by NASA and others can only spot the biggest asteroids, not the small ones that sneak up on us.

But fear not, citizens of Earth. Scientists have a plan.

RELATED: Russian Meteor: Rushing to Cash in on the Blast

One group, the non-profit B612 Foundation, proposes sending a telescope, called Sentinel, into space to detect incoming objects decades before their orbits intersect ours. Then, unmanned spacecraft could fly to them and nudge them clear of Earth’s path.

The group is trying to raise $200 million to make it happen and hopes to launch the telescope by 2016.

Another project, proposed by the University of Hawaii, aims to give earthlings a heads-up when necessary, starting by 2015.

RELATED: Meteor Events: Rare, but Dangerous

It is called the Atlas program, and the plan is to deploy a string of telescopes that would search for even smaller objects in the sky, hoping to be able to give people at least a few day’s notice that could allow time for an evacuation.

Until then, better keep Bruce Willis on speed dial.

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Local furniture makers urged to adopt green practices

SINGAPORE: More furniture manufacturers in Singapore will be encouraged to adopt green practices with the aim of being awarded green certifications.

This is part of a three-year plan by the Singapore Furniture Industries Council (SFIC) and Singapore Environment Council (SEC) with the signing of a Memorandum of Understanding (MOU).

To date, 11 SFIC members have been awarded green certificates by local and international bodies. The SFIC aims to double this number by 2014.

Under the MOU, SFIC and SEC will work together to improve furniture manufacturers' expertise in environmental sustainability.

This will be done through various programmes like training seminars and conferences.

There will be programmes to help companies undertake the SEC's Singapore Green Labelling Scheme (SGLS), a leading environmental standard and certification mark.

President of SFIC, Mr Ernie Koh, said, "Our Singapore furniture companies are already well-recognised in the global market for their high quality and professional business management. This MOU will further enhance our standing and raise our competitiveness and reputation in the eco-friendly furniture market."

- CNA/fa

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We have nothing to hide on VVIP helicopter deal, ready to face Parliament: Antony

NEW DELHI: Defence minister A K Antony on Tuesday refuted reports about his resignation over alleged kickbacks in the over Rs 3600 crore VVIP helicopter deal and said he was getting ready for Parliament session.

"We have nothing to hide. We are prepared to face Parliament," Antony said.

"I am sad over the allegations of kickbacks despite taking all precautions at all stages," he added.

The defence minister said there was no political decision in defence procurement. He also clarified that there were no differences in government in dealing with the chopper deal issue. "The whole government is acting together," Antony said.

Earlier, sources said A K Antony is not part of Prime Minister Manmohan Singh's delegation that will hold talks with British Prime Minister David Cameron during which defence deals are expected to come up for discussion.

The defence minister is not part of the delegation, ministry sources said. However, no reasons were given for Antony not being part of the delegation.

During the talks, the British side is expected to take up the issue of Eurofighter combat aircraft for India's requirement of 126 multi-role fighter planes for the IAF.

The controversial chopper deal involving Anglo-Italian firm AgustaWestland may also come up for discussion.

Antony said it was still too early to cancel the multi-crore deal with Italian company Finmeccanica over charges it paid bribes in clinching the sale of 12 helicopters to India.

He said the government would not go by media reports but would wait for evidence of any wrongdoing before acting. India placed the contract on hold last week.

He said: "The government has nothing to hide. We will find the truth and punish the guilty."

The defense ministry ordered investigations into the deal after Finmeccanica's chief executive was arrested in Milan on charges he paid bribes to obtain the contract. Giuseppe Orsi denies wrongdoing.

India signed the contract with the company's helicopter division, AgustaWestland, in 2010. Three of the 12 helicopters were delivered in December.

(Inputs from PTI and AP)

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Study: Better TV might improve kids' behavior

SEATTLE (AP) — Teaching parents to switch channels from violent shows to educational TV can improve preschoolers' behavior, even without getting them to watch less, a study found.

The results were modest and faded over time, but may hold promise for finding ways to help young children avoid aggressive, violent behavior, the study authors and other doctors said.

"It's not just about turning off the television. It's about changing the channel. What children watch is as important as how much they watch," said lead author Dr. Dimitri Christakis, a pediatrician and researcher at Seattle Children's Research Institute.

The research was to be published online Monday by the journal Pediatrics.

The study involved 565 Seattle parents, who periodically filled out TV-watching diaries and questionnaires measuring their child's behavior.

Half were coached for six months on getting their 3-to-5-year-old kids to watch shows like "Sesame Street" and "Dora the Explorer" rather than more violent programs like "Power Rangers." The results were compared with kids whose parents who got advice on healthy eating instead.

At six months, children in both groups showed improved behavior, but there was a little bit more improvement in the group that was coached on their TV watching.

By one year, there was no meaningful difference between the two groups overall. Low-income boys appeared to get the most short-term benefit.

"That's important because they are at the greatest risk, both for being perpetrators of aggression in real life, but also being victims of aggression," Christakis said.

The study has some flaws. The parents weren't told the purpose of the study, but the authors concede they probably figured it out and that might have affected the results.

Before the study, the children averaged about 1½ hours of TV, video and computer game watching a day, with violent content making up about a quarter of that time. By the end of the study, that increased by up to 10 minutes. Those in the TV coaching group increased their time with positive shows; the healthy eating group watched more violent TV.

Nancy Jensen, who took part with her now 6-year-old daughter, said the study was a wake-up call.

"I didn't realize how much Elizabeth was watching and how much she was watching on her own," she said.

Jensen said her daughter's behavior improved after making changes, and she continues to control what Elizabeth and her 2-year-old brother, Joe, watch. She also decided to replace most of Elizabeth's TV time with games, art and outdoor fun.

During a recent visit to their Seattle home, the children seemed more interested in playing with blocks and running around outside than watching TV.

Another researcher who was not involved in this study but also focuses his work on kids and television commended Christakis for taking a look at the influence of positive TV programs, instead of focusing on the impact of violent TV.

"I think it's fabulous that people are looking on the positive side. Because no one's going to stop watching TV, we have to have viable alternatives for kids," said Dr. Michael Rich, director of the Center on Media and Child Health at Children's Hospital Boston.

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Online:

Pediatrics: http://www.pediatrics.org

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Contact AP Writer Donna Blankinship through Twitter (at)dgblankinship

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Pakistan Shi'ites demand protection from militants

QUETTA, Pakistan (Reuters) - Pakistani Shi'ites furious over a sectarian bombing that killed 85 people protested on Monday, demanding that security forces protect them from hardline Sunni groups.

The attack, near a street market in the southwestern city of Quetta on Saturday, highlighted the government's failure to crack down on militancy in nuclear-armed Pakistan just a few months before a general election is due.

While the Taliban and al Qaeda remain a major source of instability, Sunni extremists, who regard Shi'ites as non-Muslims, have emerged as another significant security threat.

Shi'ite frustrations with waves of attacks on them have reached boiling point.

In Quetta, some ethnic Shi'ite Hazaras are refusing to bury their dead until the army and security forces go after Lashkar-e-Jhangvi (LeJ), the group which claimed responsibility for the latest bombing.

Around 4,000 men, women and children placed 71 bodies beside a Shi'ite place of worship. Muslim tradition requires that bodies are buried as soon as possible and leaving them above ground is a potent expression of grief and pain.

Protesters chanted "stop killing Shi'ites".

"We stand firm for our demands of handing over the city to army and carrying out targeted operation against terrorists and their supporters," said Syed Muhammad Hadi, spokesman for an alliance of Shi'ite groups.

"We will not bury the bodies unless our demands are met."

The paramilitary Frontier Corps is largely responsible for security in Baluchistan province, of which Quetta is the capital, but Shi'ites say it is unable or unwilling to protect them.

LeJ has stepped up suicide bombings and shootings in a bid to destabilize strategic U.S. ally Pakistan and install a Sunni theocracy, an echo of the strategy that al Qaeda pursued to try and trigger a civil war in Iraq several years ago.

The group was behind a bombing last month in Quetta, near the Afghan border, that killed nearly 100 people.

In Karachi, a strike to protest against the Quetta bloodshed brought Pakistan's commercial hub to a standstill.

Authorities boosted security as protesters blocked roads, including routes to the airport, disrupted rail services to other parts of the country and torched vehicles.

The roughly 500,000-strong Hazara people in Quetta, who speak a Persian dialect, have distinct features and are an easy target.

The LeJ has had historically close ties to elements in the security forces, who see the group as an ally in any potential war with neighboring India. Security forces deny such links.

(Writing by Michael Georgy; Editing by Alex Richardson)

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Pakistan protesters demand end to killing of Shiites

QUETTA, Pakistan: Thousands of women refused to bury victims of a bloody bombing and a strike shut down Pakistan's biggest city Karachi as protesters across the country demanded protection for Shiite Muslims.

Up to 4,000 women began their sit-in in Quetta Sunday evening, a day after a bomb in the city killed 81 members of the minority community including nine women and two girls aged seven and nine.

The women blocked a road and refused to bury the dead until authorities take action against the extremists behind the attack, which wounded 178 people.

The bomb, containing nearly a tonne of explosives hidden in a water tanker, tore through a crowded market in Hazara Town, a Shiite-dominated area on the edge of the city on Saturday evening.

It was the second deadly blast in the city in little over a month.

The sit-in continued Monday at Hazara Town and near a local station, said Wazir Khan Nasir, police chief of Quetta which is the capital of the southwestern province of Baluchistan.

"We are going to resume negotiations with the Shiite community leaders this morning to convince them to bury the dead," Nasir told AFP.

However a local Shiite party leader, Qayyum Changezi, said the protesters "will not bury the dead until a targeted operation is launched".

UN Secretary General Ban Ki-moon strongly condemned the bomb blast and called on authorities to act quickly against those responsible.

Sit-in demonstrations were held in several cities and towns across the country demanding an end to the killing of Shiites.

Public transport drivers and traders stopped work in Karachi Monday after a Shiite party called a protest strike, residents said.

Schools were closed, traffic was off the roads and attendance in offices was thin in the city. Several political and religious parties have backed the strike call.

"We will continue our peaceful struggle for protection of the Shiite community," said a Shiite party leader, Hasan Zafar Naqvi.

Baluchistan has increasingly become a flashpoint for surging sectarian bloodshed between Pakistan's majority Sunni Muslims and Shiites, who account for around a fifth of the country's 180 million people.

Saturday's attack takes the death toll in sectarian attacks in Pakistan this year to almost 200 compared with more than 400 in the whole of 2012 -- a year which Human Rights Watch described as the deadliest on record for Shiites.

A double suicide bombing on a snooker club in Quetta on January 10 killed at least 92 people, the deadliest-ever single attack on the community in Pakistan.

No one has been arrested for that attack and Daud Agha, chairman of the Shia Conference, told AFP anger was rising in the community.

Although it is customary for Muslims to bury the dead swiftly, protesters after the snooker club bombing refused to do so, prompting Islamabad to sack the provincial government.

The banned militant group Lashkar-e-Jhangvi (LeJ) claimed responsibility for Saturday's attack -- as it did for the snooker hall bombing and a February 1 attack on a Shiite mosque in northwest Pakistan that killed 24.

There is anger and frustration at the apparent inability or unwillingness of the authorities to tackle the LeJ. Activists say the failure of the judiciary to prosecute sectarian killers allows them to operate with impunity.

Baluchistan governor Zulfiqar Magsi pointed the finger at the security forces over the latest atrocity.

"Repeated occurrence of such attacks is a failure of our intelligence agencies," he told reporters late Saturday.

"Our security institutions, police, FC (paramilitary Frontier Corps) and others are either scared or cannot take action against them."

But Baluchistan home secretary Akbar Hussain Durrani said authorities were already taking action. "Law enforcement agencies have arrested so many suspects and seized huge cache of arms," Durrani said.

Pakistan is due to hold a general election in coming months but there are fears that rising sectarian and Islamist violence could force the postponement of polls.

- AFP/ir

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Normalcy returns to Kashmir after days of curfew

SRINAGAR: Normalcy returned to Kashmir valley on Monday after nine days of curfew and strike in the aftermath of the execution of Parliament attack convict Mohammad Afzal Guru.

The markets in Srinagar and other major towns were abuzz with activity as shopkeepers opened their outlets this morning.

Government and private offices and other commercial establishments opened as per their normal schedule. Public transport was also seen plying on the roads.

Authorities had imposed curfew across the Valley on February 9 due to apprehensions of law and order problems following Guru's execution inside the Tihar Jail.

Separatists had called for a seven-day shutdown in the Valley, and as the authorities lifted curfew late on Friday, hardline Hurriyat led by Syed Ali Shah Geelani extended the strike by two days in support of the demand that Guru's body be handed over to his family for last rites.

Three persons died and over 60 others injured including 25 policemen in the clashes between protesters and security forces following Guru's execution.

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UN warns risk of hepatitis E in S. Sudan grows

GENEVA (AP) — The United Nations says an outbreak of hepatitis E has killed 111 refugees in camps in South Sudan since July, and has become endemic in the region.

U.N. refugee agency spokesman Adrian Edwards says the influx of people to the camps from neighboring Sudan is believed to be one of the factors in the rapid spread of the contagious, life-threatening inflammatory viral disease of the liver.

Edwards said Friday that the camps have been hit by 6,017 cases of hepatitis E, which is spread through contaminated food and water.

He says the largest number of cases and suspected cases is in the Yusuf Batil camp in Upper Nile state, which houses 37,229 refugees fleeing fighting between rebels and the Sudanese government.

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Meteor Blast Creates Rush to Cash In

The shattered glass and broken walls caused by the massive explosion of a monstrous meteor over this remote, industrial Russian city is not even cleaned up, and people are already trying to cash in.

Some residents want to turn this city known mostly for its tank factory into a tourist destination, while others from all around the world are determined to find fragments of the meteorite.

Meteor hunters say it's a once in a lifetime opportunity. A small piece of the space rock that exploded over Russia Friday could be worth thousands of dollars, and bigger chunks could fetch hundreds of thousands.

SEE PHOTOS: Meteorite Crashes in Russia

"I haven't been able to sleep for the last two days because of this," said Michael Farmer, who runs the website Meteor Hunter. "This is a once in a lifetime event. We've never seen anything like this in the last hundred years."

He said he started planning a trip to Chelyabinsk as soon as the meteorite exploded.

"The next morning I was on the phone working on visas. I'd like to get a visa and get over to Russia as quickly as possible," he said. "When this type of thing happens, you know hours count so we try to arrange that as fast as possible."

A day after a massive meteor exploded over this city in central Russia, a monumental cleanup effort is under way.

Authorities have deployed around 24,000 troops and emergencies responders to help in the effort.

Officials say more than a million square feet of windows -- the size of about 20 football fields -- were shattered by the shockwave from the meteor's blast. Around 4,000 buildings in the area were damaged.

Nasha gazeta, www.ng.kz/AP Photo

The injury toll climbed steadily on Friday. Authorities said today it now stands at more than 1,200. Most of those injuries were from broken glass, and only a few hundred required hospitalization.

According to NASA, this was the biggest meteor to hit Earth in more than a century. Preliminary figures suggest it was 50 feet wide and weighed more than the Eiffel Tower.

NASA scientists have also estimated the force of the blast that occurred when the meteor fractured upon entering Earth's atmosphere was approximately 470 kilotons -- the equivalent of about 30 Hiroshima bombs, but it did not cause major damage because it occurred so high in the atmosphere.

"This was caused by a small asteroid, about 15 meters in diameter, coming in at around 18 kilometers per second, that's in excess of 40-thousand miles per hour," NASA planetary scientist Paul Abell said. "As the asteroid comes in, it interacts with the atmosphere and effectively it converts all the energy, the kinetic energy of the asteroid, the mass of the asteroid and the velocity and it's actually that velocity, the asteroid just effectively explodes and that creates the pressure wave, the blast wave that comes down."

Treasure hunters hoping to cash in on the bits of space rock aren't the only ones eager to find pieces of the meteor, Abell said. Scientists say the material could offer valuable information.

"One of the things we'd like to learn is first of all, what was the composition of the asteroid, where did it come from," he said. "We know it came from the asteroid belt but can we link it to a bigger asteroid and also, get an idea of the dispersal pattern."

Residents said they still can't believe it happened here.

"It was something we only saw in the movies," one university student said. "We never thought we would see it ourselves."

Throughout the city, the streets are littered with broken glass. Local officials have announced an ambitious pledge to replace all the broken windows within a week. In the early morning hours, however, workers could still be heard drilling new windows into place.

Authorities have sent divers into a frozen lake outside the city, where a large chunk of the meteor is believed to have landed, creating a large hole in the ice. By the end of the day they had not found anything.

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