Sci Rep:指关节“咔咔”响,是怎么回事?

2018-04-01 佚名 中国生物技术网

无论你信或不信,科学家们从二十年代初就开始研究为什么压指关节时会发出奇怪的爆裂声了。从那时起争论就开始了,且互相冲突的理论难以调和。正如你想得那样,没有人把指关节解剖开,然后压一下看看会发生什么。

无论你信或不信,科学家们从二十年代初就开始研究为什么压指关节时会发出奇怪的爆裂声了。从那时起争论就开始了,且互相冲突的理论难以调和。正如你想得那样,没有人把指关节解剖开,然后压一下看看会发生什么。

近日,法国巴黎综合理工大学和美国斯坦福大学的研究人员们可能破解了关节“爆裂声”谜题。该研究团队结合计算方法和实验发现,这种令人烦躁的声音是由手指关节液体中的微小气泡破裂产生的。整个过程只持续300毫秒。

过去有研究发现,并不是所有的关节都可以被压出声音,但是一旦发生了的话,就需要在20分钟之后才可以重复这个过程。

巴黎综合理工大学Abdul Barakat教授解释说:“当一个人掰开指关节时产生的声音,是由于指关节液中的空化气泡会部分破裂造成的。它可能是很多气泡产生声音,但是我发现,单个气泡破裂就足以产生让我们察觉到的声音。”

自1971年以来,科学家们就推测声音是由指关节中的气泡破裂产生的,但是有证据表明,在指关节发出响声后,指关节中仍然有没有破裂的气泡,所以该理论就被抛弃了。这项新研究解决了这个矛盾,它发现,部分气泡破裂就能够产生声音。过去,另一项使用超声波对指关节进行测试的研究将这种声音与指关节中液体压力的变化联系到一起。是的,科学家们似乎对压指关节非常感兴趣。


(a) 第三个掌指(MCP)关节。(b) 通过MRI4磁共振成像显示的MCP 关节渲染图像(为清晰起见,添加了滑液)。(c) MCP关节的二维近似图,子图(i)半径和关节接合间隙,子图(ii)MCP关节的二维近似图,两个圆弧的中心以离心率e来区分。

研究人员通过记录三位受测对象压指关节的声音证实了他们的假设,他们将声音与计算机模拟产生的数字声波进行了比较。这两种波形完美匹配,表明Barakat和同事们猜对了。

Barakat说:“我们希望用数学手段分析,因为过去的研究都是基于观测和猜想,所以我们试图建立一个数学模型来描述这种物理现象。结果证实,是气泡的破裂产生了这种声音。”

读到这里,我确定你们有些人手已经开始痒痒了。但是你应该这么做吗?目前的研究表明,压指关节既没有好处也没有坏处。这种行为不会导致关节炎,但是目前很多人认为它会。此外,这项研究也有实际意义。Barakat相信,这项发现能够帮助医生设计出更好的治疗方法来帮助患者保持关节健康和活动性,因为关节会随着衰老而退化。

该研究发表在3月29日的《Scientific Reports》上。

原始出处:

V. Chandran Suja & A. I. Barakat.A Mathematical Model for the Sounds Produced by Knuckle Cracking.Sci Rep:8, Article number: 4600 (2018).

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    2018-04-04 spake

    一直认为是关节退化的表现

    0

  2. [GetPortalCommentsPageByObjectIdResponse(id=302620, encodeId=2c2a30262011, content=一直认为是关节退化的表现, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/02/25/f9c103b74b05f7c5951ad79adf5be80f.jpg, createdBy=49642274853, createdName=spake, createdTime=Wed Apr 04 08:16:14 CST 2018, time=2018-04-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=302018, encodeId=4f68302018c8, content=原来这个问题还在争论啊!看来我同学是忽悠我的, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTKDfO7wKibzpw4Y3jBapU12hMCI3oQn0UqmfaVQ7TTXwFMYX2VGWQuCubfzV2o0Vq73K4EyZHc7BIw/132, createdBy=1fd62312371, createdName=Andyy, createdTime=Mon Apr 02 10:04:47 CST 2018, time=2018-04-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=302012, encodeId=2ce2302012d1, content=学习了谢谢了, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zSn0GqHrsfLPeNmuNF9ibgMfMOAs7Iic5MpiaU8RLmRH67xCKuk5wzfhb7G4ib7ia6z9lrnsTicj1nAUfEOMecZDtvvu/0, createdBy=d7f91939785, createdName=186****0580(小山羊), createdTime=Mon Apr 02 09:49:17 CST 2018, time=2018-04-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=302008, encodeId=c1a630200884, content=那颈椎呢?也是一样吗?, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b6fa2315521, createdName=122371f4m82暂无昵称, createdTime=Mon Apr 02 09:35:24 CST 2018, time=2018-04-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=301758, encodeId=8731301e58db, content=卧槽.中午弄懂了我小学时候一直有得困惑, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI06MUzr7AI0nTlsgpDTRvVB51yAMdGfTKe8roX48ibEeqHD1dz3UibUa9SibU24UPLcEozJiaSB67WvQ/132, createdBy=fca0106828, createdName=Ramsey, createdTime=Sun Apr 01 13:31:41 CST 2018, time=2018-04-01, status=1, ipAttribution=)]
    2018-04-02 Andyy

    原来这个问题还在争论啊!看来我同学是忽悠我的

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=302620, encodeId=2c2a30262011, content=一直认为是关节退化的表现, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/02/25/f9c103b74b05f7c5951ad79adf5be80f.jpg, createdBy=49642274853, createdName=spake, createdTime=Wed Apr 04 08:16:14 CST 2018, time=2018-04-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=302018, encodeId=4f68302018c8, content=原来这个问题还在争论啊!看来我同学是忽悠我的, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTKDfO7wKibzpw4Y3jBapU12hMCI3oQn0UqmfaVQ7TTXwFMYX2VGWQuCubfzV2o0Vq73K4EyZHc7BIw/132, createdBy=1fd62312371, createdName=Andyy, createdTime=Mon Apr 02 10:04:47 CST 2018, time=2018-04-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=302012, encodeId=2ce2302012d1, content=学习了谢谢了, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zSn0GqHrsfLPeNmuNF9ibgMfMOAs7Iic5MpiaU8RLmRH67xCKuk5wzfhb7G4ib7ia6z9lrnsTicj1nAUfEOMecZDtvvu/0, createdBy=d7f91939785, createdName=186****0580(小山羊), createdTime=Mon Apr 02 09:49:17 CST 2018, time=2018-04-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=302008, encodeId=c1a630200884, content=那颈椎呢?也是一样吗?, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b6fa2315521, createdName=122371f4m82暂无昵称, createdTime=Mon Apr 02 09:35:24 CST 2018, time=2018-04-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=301758, encodeId=8731301e58db, content=卧槽.中午弄懂了我小学时候一直有得困惑, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI06MUzr7AI0nTlsgpDTRvVB51yAMdGfTKe8roX48ibEeqHD1dz3UibUa9SibU24UPLcEozJiaSB67WvQ/132, createdBy=fca0106828, createdName=Ramsey, createdTime=Sun Apr 01 13:31:41 CST 2018, time=2018-04-01, status=1, ipAttribution=)]
    2018-04-02 186****0580(小山羊)

    学习了谢谢了

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=302620, encodeId=2c2a30262011, content=一直认为是关节退化的表现, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/02/25/f9c103b74b05f7c5951ad79adf5be80f.jpg, createdBy=49642274853, createdName=spake, createdTime=Wed Apr 04 08:16:14 CST 2018, time=2018-04-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=302018, encodeId=4f68302018c8, content=原来这个问题还在争论啊!看来我同学是忽悠我的, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTKDfO7wKibzpw4Y3jBapU12hMCI3oQn0UqmfaVQ7TTXwFMYX2VGWQuCubfzV2o0Vq73K4EyZHc7BIw/132, createdBy=1fd62312371, createdName=Andyy, createdTime=Mon Apr 02 10:04:47 CST 2018, time=2018-04-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=302012, encodeId=2ce2302012d1, content=学习了谢谢了, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zSn0GqHrsfLPeNmuNF9ibgMfMOAs7Iic5MpiaU8RLmRH67xCKuk5wzfhb7G4ib7ia6z9lrnsTicj1nAUfEOMecZDtvvu/0, createdBy=d7f91939785, createdName=186****0580(小山羊), createdTime=Mon Apr 02 09:49:17 CST 2018, time=2018-04-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=302008, encodeId=c1a630200884, content=那颈椎呢?也是一样吗?, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b6fa2315521, createdName=122371f4m82暂无昵称, createdTime=Mon Apr 02 09:35:24 CST 2018, time=2018-04-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=301758, encodeId=8731301e58db, content=卧槽.中午弄懂了我小学时候一直有得困惑, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI06MUzr7AI0nTlsgpDTRvVB51yAMdGfTKe8roX48ibEeqHD1dz3UibUa9SibU24UPLcEozJiaSB67WvQ/132, createdBy=fca0106828, createdName=Ramsey, createdTime=Sun Apr 01 13:31:41 CST 2018, time=2018-04-01, status=1, ipAttribution=)]
    2018-04-02 122371f4m82暂无昵称

    那颈椎呢?也是一样吗?

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=302620, encodeId=2c2a30262011, content=一直认为是关节退化的表现, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/02/25/f9c103b74b05f7c5951ad79adf5be80f.jpg, createdBy=49642274853, createdName=spake, createdTime=Wed Apr 04 08:16:14 CST 2018, time=2018-04-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=302018, encodeId=4f68302018c8, content=原来这个问题还在争论啊!看来我同学是忽悠我的, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTKDfO7wKibzpw4Y3jBapU12hMCI3oQn0UqmfaVQ7TTXwFMYX2VGWQuCubfzV2o0Vq73K4EyZHc7BIw/132, createdBy=1fd62312371, createdName=Andyy, createdTime=Mon Apr 02 10:04:47 CST 2018, time=2018-04-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=302012, encodeId=2ce2302012d1, content=学习了谢谢了, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zSn0GqHrsfLPeNmuNF9ibgMfMOAs7Iic5MpiaU8RLmRH67xCKuk5wzfhb7G4ib7ia6z9lrnsTicj1nAUfEOMecZDtvvu/0, createdBy=d7f91939785, createdName=186****0580(小山羊), createdTime=Mon Apr 02 09:49:17 CST 2018, time=2018-04-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=302008, encodeId=c1a630200884, content=那颈椎呢?也是一样吗?, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b6fa2315521, createdName=122371f4m82暂无昵称, createdTime=Mon Apr 02 09:35:24 CST 2018, time=2018-04-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=301758, encodeId=8731301e58db, content=卧槽.中午弄懂了我小学时候一直有得困惑, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI06MUzr7AI0nTlsgpDTRvVB51yAMdGfTKe8roX48ibEeqHD1dz3UibUa9SibU24UPLcEozJiaSB67WvQ/132, createdBy=fca0106828, createdName=Ramsey, createdTime=Sun Apr 01 13:31:41 CST 2018, time=2018-04-01, status=1, ipAttribution=)]
    2018-04-01 Ramsey

    卧槽.中午弄懂了我小学时候一直有得困惑

    0