CN101627900A - Method for auxiliary evaluation of stress states of knee joints - Google Patents
Method for auxiliary evaluation of stress states of knee joints Download PDFInfo
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- CN101627900A CN101627900A CN200910091143A CN200910091143A CN101627900A CN 101627900 A CN101627900 A CN 101627900A CN 200910091143 A CN200910091143 A CN 200910091143A CN 200910091143 A CN200910091143 A CN 200910091143A CN 101627900 A CN101627900 A CN 101627900A
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Abstract
The invention discloses a method for auxiliary evaluation of stress states of knee joints. The method comprises the following steps: obtaining sizes of feet and foot progression angles of the left and the right feet during normal walking of a testee, carrying out standardization on data, then analyzing sole pressure data of the left and the right feet, and obtaining the average pressure difference aPDA-1 of soles of the two feet during the normal walking; obtaining the sizes of the feet and the foot progression angles of the left and the right feet of the testee during unilateral knee rotation walking, carrying out standardization on the data, then analyzing the sole pressure data of the left and the right feet, and obtaining the average pressure difference aPDA-2 of the soles of the two feet during the unilateral knee rotation walking; wherein, the standardization applies MATLAB R2006a software for carrying out treatment, if P is less than 0.05 during the comparison of aPDA-1 with aPDA-2, the situation prompts that the stresses of the left knee joint and the right knee joint of the testee are inconsistent. The application of the method can rapidly and accurately understand the physiological relationship between the feet and the knees under different actions, thereby guiding various types of training or movement.
Description
Technical field
The present invention relates to a kind of method of auxiliary evaluation of stress states of knee joints.
Background technology
Observation during for motion of knee joint and comparison, kinematics analysis commonly used at present.Behind relevant joint and somatic markers body location, the infrared pick-up head constantly carries out data acquisition, frequency acquisition generally 60 times/more than the min, in conjunction with the gait analysis main frame movement locus is analyzed and three-dimensional reconstruction (see figure 1) (ButlerRJ, Minick KI, Ferber R, et al.Gait mechanics following ACLreconstruction:Implications for the early onset of knee osteoarthritis.British Journal of Sports Medicine, 2009,43 (5): 366-370.).
But there is following subject matter in existing kinematics analysis system: 1. the motion that used skin surface label can not authentic representative deep skeleton, and error between the two can reach 40mm, especially is difficult to accurately assess the knee joint rotary state; 2. complicated operation and time-consuming.
Summary of the invention
The purpose of this invention is to provide a kind of fast, the method for auxiliary evaluation of stress states of knee joints accurately.
The method of auxiliary evaluation of stress states of knee joints provided by the invention comprises the steps:
Sufficient angle of travel about when the size of acquisition experimenter foot, normal gait is carried out standardization with above data, the plantar pressure data of foot about analyzing then, the vola average pressure difference aPDA-1 of two foots when obtaining normal gait;
Sufficient angle of travel about when the size of acquisition experimenter foot, unilateral knee rotation walking is carried out standardization with above data, the plantar pressure data of foot about analyzing then, the vola average pressure difference aPDA-2 of two foots when obtaining unilateral knee rotation walking;
During described unilateral knee rotation walking the amplitude of variation of walking speed (V1) when described normal gait walking speed (V2) ± 0.1 meter per second within (V2-V1=± 0.1 meter per second);
If aPDA-1 compares with aPDA-2, P＜0.05, prompting experimenter left and right sides knee joint is stressed inconsistent;
Described standardization is handled for using MATLAB R2006a (2006 editions) software (MathWorks company).Described standardization specifically can be the method that N.L W.Keijsers etc. provides, referring to document: N.L.W.Keijsers, N.M.Stolwijk, B.Nienhuis, et al.A new method tonormalize plantar pressure measurements for foot size and footprogression angle.J Biomech, 2009,42:87-90..
Described sufficient size is that length and the width by foot embodies, referring to document: N.L.W.Keijsers, N.M.Stolwijk, B.Nienhuis, et al.A new method to normalize plantarpressure measurements for foot size and foot progression angle.JBiomech, 2009,42:87-90..
Described unilateral knee rotation can be unilateral knee inward turning or unilateral knee outward turning.
Experimenter's described plantar pressure data can obtain by plantar pressure force plate test macro.
Described plantar pressure force plate test macro specifically can be 2 meters long of Footscan SCSI the dull and stereotyped test macro of altofrequency (Belgian RSscan company produces, 2 * 0.4m, 16384 pick offs, 125-500Hz).
Using above method, only is that stress states of knee joints is carried out auxiliary evaluation, also needs to be aided with other method, further determines.
Use method of the present invention, can understand the different actions physiological relation between the sufficient knee joint down fast and accurately, thereby instruct various training or motion.
Description of drawings
Fig. 1 is existing kinematics analysis method sketch map.
The specific embodiment
Following embodiment is convenient to understand better the present invention, but does not limit the present invention.Experimental technique among the following embodiment if no special instructions, is conventional method.Used test material among the following embodiment if no special instructions, is to buy from routine biochemistry reagent shop and obtains.
Adopt following steps that 12 sports enthusiasts' bilateral knee joint force difference is estimated:
Sufficient angle of travel about when (1) obtaining size, the normal gait of experimenter's foot, method (the N.L.W.Keijsers that application N.L.W.Keijsers etc. provides, N.M.Stolwijk, B.Nienhuis, et al.A new method to normalize plantar pressuremeasurements for foot size and foot progression angle.J Biomech, 2009,42:87-90.) above data are carried out standardization.(Belgian RSscan company produces to use the dull and stereotyped test macro of altofrequency of 2 meters long of Footscan SCSI, 2 * 0.4m, 16384 pick offs, 125-500Hz) the plantar pressure data of foot about the measurement, the vola average pressure difference aPDA-1 of two foots when obtaining normal gait;
Sufficient angle of travel about when (2) obtaining size, the walking of unilateral knee inward turning of experimenter's foot, method (the N.L.W.Keijsers that application N.L.W.Keijsers etc. provides, N.M.Stolwijk, B.Nienhuis.et al.A new method to normalize plantar pressuremeasurements for foot size and foot progression angle.J Biomech, 2009,42:87-90.) above data are carried out standardization.(Belgian RSscan company produces to use the dull and stereotyped test macro of altofrequency of 2 meters long of Footscan SCSI, 2 * 0.4m, 16384 pick offs, 125-500Hz) the plantar pressure data of foot about the measurement, the vola average pressure difference aPDA-2 of two foots when obtaining the walking of unilateral knee inward turning;
(3) if aPDA-1 compares with aPDA-2, P＜0.05, prompting experimenter left and right sides knee joint is stressed inconsistent.
12 sports enthusiasts' related data and evaluation result see Table 1.
12 sports enthusiasts' of table 1 related data and evaluation result
Claims (4)
1, a kind of method of auxiliary evaluation of stress states of knee joints comprises the steps:
Sufficient angle of travel about when the size of acquisition experimenter foot, normal gait is carried out standardization with above data, the plantar pressure data of foot about analyzing then, the vola average pressure difference aPDA-1 of two foots when obtaining normal gait; Described standardization is handled for using MATLAB R2006a software;
Sufficient angle of travel about when the size of acquisition experimenter foot, unilateral knee rotation walking is carried out standardization with above data, the plantar pressure data of foot about analyzing then, the vola average pressure difference aPDA-2 of two foots when obtaining unilateral knee rotation walking; Described standardization is handled for using MATLAB R2006a software; During described unilateral knee rotation walking the amplitude of variation of walking speed when described normal gait walking speed ± 0.1 meter per second within;
If aPDA-1 compares with aPDA-2, P＜0.05, prompting experimenter left and right sides knee joint is stressed inconsistent.
2, the method for claim 1 is characterized in that: described unilateral knee rotates to be unilateral knee inward turning or unilateral knee outward turning.
3, method as claimed in claim 1 or 2 is characterized in that: experimenter's described plantar pressure data obtain by plantar pressure force plate test macro.
4, method as claimed in claim 3 is characterized in that: the dull and stereotyped test macro of the altofrequency that described plantar pressure force plate test macro is Footscan SCSI.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103720476A (en) * | 2013-12-13 | 2014-04-16 | 天津大学 | Stability evaluation method under curved path movement mode |
| WO2017080137A1 (en) * | 2015-11-13 | 2017-05-18 | 上海逸动医学科技有限公司 | Joint movement detection system and method, and dynamic assessment method and system for knee joint |
| CN107174253A (en) * | 2017-05-23 | 2017-09-19 | 广东远峰电子科技股份有限公司 | A kind of determination methods, the device and system of lower extremity movement posture |
| CN108209924A (en) * | 2018-01-16 | 2018-06-29 | 北京大学第三医院 | The analysis method of gait feature after a kind of Anterior Cruciate Ligament Ruptures |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2423862Y (en) * | 2000-02-02 | 2001-03-21 | 中国康复研究中心 | Walking time symmetrical analyzer |
| CN100438830C (en) * | 2005-01-28 | 2008-12-03 | 深圳安科高技术股份有限公司 | System and method for measuring pressure distribution and interval between two bearers |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103720476A (en) * | 2013-12-13 | 2014-04-16 | 天津大学 | Stability evaluation method under curved path movement mode |
| CN103720476B (en) * | 2013-12-13 | 2015-05-27 | 天津大学 | Stability evaluation method under curved path movement mode |
| WO2017080137A1 (en) * | 2015-11-13 | 2017-05-18 | 上海逸动医学科技有限公司 | Joint movement detection system and method, and dynamic assessment method and system for knee joint |
| US11039762B2 (en) | 2015-11-13 | 2021-06-22 | Innomotion Incorporation (Shanghai) | Joint movement analysis system and method; knee-joint dynamic evaluation method and system |
| CN107174253A (en) * | 2017-05-23 | 2017-09-19 | 广东远峰电子科技股份有限公司 | A kind of determination methods, the device and system of lower extremity movement posture |
| CN107174253B (en) * | 2017-05-23 | 2020-06-30 | 广东高驰运动科技有限公司 | Method, device and system for judging lower limb movement posture |
| CN108209924A (en) * | 2018-01-16 | 2018-06-29 | 北京大学第三医院 | The analysis method of gait feature after a kind of Anterior Cruciate Ligament Ruptures |
| CN108209924B (en) * | 2018-01-16 | 2019-02-19 | 北京大学第三医院 | The analysis method of gait feature after a kind of Anterior Cruciate Ligament Ruptures |
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