国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

您現(xiàn)在的位置: > Language Tips > Audio & Video > Special Speed News  
 





  FDA approves new kee replacement for women
[ 2006-05-25 09:19 ]

I’m Bob Doughty with the VOA Special English HEALTH REPORT.

Women who have problems with artificial knee implants may get some help soon. The United States Food and Drug Administration recently approved a replacement knee designed especially for women.

About four hundred thousand people in the United States have knee replacement operations each year. More than sixty percent of them are women.

People who have damaged cartilage in their knees are good candidates for a replacement operation. Cartilage is a kind of soft connective tissue. Injuries or disease may cause cartilage loss. When cartilage is gone in the knee, bones rubbing together may restrict movement and cause severe pain.

In a replacement operation, doctors remove damaged parts of the thighbone, the shinbone and the kneecap. They replace the damaged parts with parts made of metal and plastic.

Studies have shown that a knee implant lasts about fifteen years. Women report more problems with implants than men do. Problems include pain and difficulty moving the knee. In some cases, another operation is needed. Experts believe this is because makers of knee implants are more concerned about size than shape. A man’s knee is shaped differently than a woman’s. Men usually have shorter and wider knees. Women’s knees are smaller and narrower.

Makers of the new knee implant say it is shaped to fit a woman’s bone structure. They say women should experience less pain and recover more quickly. Currently, complete recovery can last three months or longer. Makers of the new product say it will also make knee replacement operations easier to carry out.

Zimmer Holdings Incorporated built the new Gender Solutions knee. The company already makes other replacement knees and hips.

Nine medical experts helped to design the Gender Solutions knee. One of them is Kim Bertin of L.D.S. Hospital in Utah. He compared existing knee implants to putting men’s shoes on women’s feet.

Other experts question the effectiveness of the new knee. They believe it is just a marketing tool to interest women. No studies have shown that the new implant works better than other products.

Also, Zimmer has competition. Another company, Stryker Orthopedics, says it makes a knee to fit both men and women.

This VOA Special English HEALTH REPORT was written by Cynthia Kirk. I’m Bob Doughty.


cartilage : 軟骨



(來源:VOA  英語點津姍姍編輯)


 

 
 
 




广汉市| 上犹县| 镶黄旗| 承德市| 绥德县| 郎溪县| 黄陵县| 射阳县| 武胜县| 清徐县| 汉寿县| 新巴尔虎右旗| 宿迁市| 甘孜县| 应用必备| 百色市| 库伦旗| 韶山市| 芷江| 上高县| 永平县| 彩票| 漳浦县| 慈利县| 略阳县| 英超| 镶黄旗| 南召县| 合江县| 柞水县| 玉田县| 阳高县| 额济纳旗| 灵璧县| 河南省| 洪江市| 双桥区| 筠连县| 红原县| 三亚市| 邻水|