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宽跟尖跟高跟鞋都可引起骨关节炎
http://www.100md.com 2001年7月26日 家庭医生医疗保健网
     女士们穿尖跟的高跟鞋走路时,不但会发出“嗒嗒嗒”的响声,而且还会引起脚痛和一些长期的损害。过去的研究已经证明了,窄而尖的高根鞋对膝盖有害,可以引起骨关节炎,主要病变是关节的联合软骨退化。因此许多妇女会认为,选择宽跟高跟鞋代替尖跟高跟鞋是明智之举,但事实并非如此。现在有研究认为,尖跟和宽跟的高跟鞋给人带来的损害并没有很大的区别,对于部份人来说甚至比尖跟高跟鞋的损害更大。该研究结果发表在最近一期英国医学杂志《柳叶刀》上。

    研究负责人,哈佛大学斯保丁康复医院的内科医生、康复科专家凯西博士经过对20名平均年龄为34岁的健康女性的研究,发现穿宽跟的高跟鞋时膝盖转动力矩比赤脚时增长了26%,而穿尖跟高跟鞋时增长率为22%。由于宽跟的高跟鞋更加舒适,给足底提供的空间更多,并能减少姆囊炎的发生,女性往往穿的频率比较高,时间也比较长。

    凯西博士认为,高跟鞋的危害概括地来说就是走路时增加了膝盖平常所承受的压力,她称这个为“膝盖转动力矩”。穿高根鞋造成脚和脚踝难以发挥它们的正常功能,结果是膝关节来完成额外的工作因而受累。但可悲的是,女士们并没有意识到她们走路时膝盖正承受着额外的转动力矩。
, 百拇医药
    随着人类寿命的增长,人口的老龄化,由于不正确的穿鞋导致膝盖的骨关节炎的病例也无可避免地增多了,事实上骨关节炎是导致老年人残疾的最常见原因之一。一般说来,男女在赤脚走路时的膝盖转动力矩是很相近的。因此在两性之间,任何一种可能存在的生物力学差异都不能充份地解释为什么女性患骨关节炎的几率是男性的两倍。

    真正能防止骨关节炎的方法只有3种:让你的脚穿合适的鞋子,保持正常的体重,避免骨骼和关节外伤。建议各位爱美的女士平时最好多穿低跟鞋或平底鞋,因为必竟换鞋子比减肥或做膝盖置换手术要容易得多。

    Wide-Heeled Shoes as Bad as Stilettos

    Go ahead, wear those spiky stilletos. Turns out they‘re no worse for you than wider high heels, says a study.
, 百拇医药
    For many women, the classic stiletto high-heeled shoe makes an outfit sing - and the feet ache.They can also cause long-term damage. Studies have shown the narrow-based spiky, high-heeled shoes are bad for the knees, causing osteoarthritis, the most common form of arthritis, in which joint cartilage degenerates.

    A study released today shows their wider-heeled cousins, preferred by many women as a sensible replacement to the stiletto, are just as bad for the knee, and in some cases may actually be worse.
, http://www.100md.com
    Results of the study appear in this week’s issue of the British medical journal The Lancet.

    Torqued-Out Knees

    Dr. Casey Kerrigan, lead author of the study and a physical medicine and rehabilitation specialist at Spaulding Rehabilitation Hospital at Harvard, says the problem with high-heeled shoes in general is that they exaggerate the pressures normally placed on the knee while walking. She calls this “knee torque.”
, 百拇医药
    “The problem is high-heeled shoes knock out the normal functioning of the foot and ankle leaving it up to the knee to pick up the slack,” Kerrigan says. “Unfortunately, people don’t really feel the increased torque in the knee when they walk.”

    “So as the population ages and people live longer, arthritis of the knee from wearing the wrong shoes becomes inevitable. In fact, it’s one of the diseases that causes the most disability in older people.”
, 百拇医药
    Normally men and women have similar knee torques when walking barefoot. So any biomechanical differences that may exist between the sexes do not adequately explain why women experience osteoarthritis twice as often as men.

    Comfort Doesn’t Equal Health

    In her study of 20 healthy women with an average age of 34, Kerrigan found that knee torque was increased by 26 percent when walking in wide-based, high-heeled shoes compared to walking barefoot. That was slightly worse than the 22-percent increase in torque caused by stilettos.
, http://www.100md.com
    “Because these wider-based shoes are more comfortable, providing more room for the foot and reducing the incidence of bunions, women tend to wear them more often and for longer periods of time,” she says.

    But, she adds: “There are only three real ways to prevent osteoarthritis: You can wear proper foot wear, maintain normal body weight, and avoid trauma to the joints and bones.”

    “We recommend wearing shoes with low or preferably no heels. It’s certainly easier to change shoes than it is to lose weight or have a knee replaced.”, http://www.100md.com