Foot testing method

• US 4,917,105 A
• Filed: 05/27/1988
• Issued: 04/17/1990
• Est. Priority Date: 12/24/1987
• Status: Expired due to Term

• Current Assignee: Karhu-Titan Oy
• Original Assignee: Karhu-Titan
• Inventors: Kvist, Martti, Tiitola, Antti-Jussi
• Primary Examiner(s): Hindenburg, Max
• Assistant Examiner(s): Shay, Randy
• Application Number:
  US07/199,472
• Time in Patent Office: 690 Days
• Field of Search: 128/774, 128/779, 128/782, 128/80 D, 128/80 DB, 128/581, 128/585, 128/586, 128/595, 128/614, 128/619, 128/898, 33/511, 33/512, 33/515, 33/3 A, 33/3 B, 33/3 C
• US Class Current: 600/592
• CPC Class Codes: A43D 1/02 Foot-measuring devices measuring the shape, pattern or size of the body for diagnostic purposes A61B5/103, e.g. measuring physical dimensions A61B5/107
• CPC Class Codes: A61B 5/1074 Foot measuring devices

Abstract

This invention relates to a foot testing method to analyze the functional biomechanic type of the foot of a person such as an athlete to determine the appropriate insole to be fitted in the person'"'"'s shoe as well as to a measuring device and insole used to implement this method. This method comprises the following steps: (1) placing the foot in a neutral (unloaded) position; (2) identifying the center line of the heel bone; (3) identifying the center line of the tendo Achillis; (4) placing the person tested in a standing position and preferably identifying the type of arch; (5) measuring the angle between the heel bone center line and the tendo Achillis center line preferably with his/her knees bent at approximately 45°.

Claims

1. A method for determining the functional biomechanic type of a person'"'"'s foot comprising the following steps:

placing the person'"'"'s foot in a neutral and unloaded position;

identifying the center line of the heel bone;

identifying the center line of the tendo Achillis;

placing the person tested in a standing position;

measuring the angle between the heel bone center line and the tendo Achillis center line when the person stands with the knees bent at approximately 45°

(or 135°

between the upper leg and the lower leg) determining the functional biomechanic type of the person'"'"'s foot based on said angle measurement.

2. A method as described in claim 1, further comprising the step of placing the person tested in a standing position on a mirror table wherein said determining step further includes the step of determining the type of arch of the foot by comparing the reflected image obtained on the mirror table to a plurality of predetermined types of feet.

3. A method as described in claim 1, further comprising the step of placing the person tested in a standing position on a mirror table wherein said determining step further includes the step of determining the type of arch of the foot by comparing the reflecting image obtained on the mirror table to a plurality of predetermined types of feet and measuring the lateral movement of the malleol bone as the person tested moves from at approximately 45°

bent knee position to a normal standing position.

4. A method as described in claim 1, further comprising the step of placing the person tested in a standing position on a mirror table wherein said determining step further includes the step of determining the type of arch of the foot by comparing the reflected image obtained on the mirror table to a plurality of predetermined types of feet and measuring the forward flexibility of the ankle joint.

5. A method as described in claim 1, further comprising the step of placing the person tested in a standing position on a mirror table wherein said determining step further includes the step of determining the type of arch of the foot by comparing the reflected image obtained on the mirror table to a plurality of predetermined types of feet and measuring the lateral movement of the malleol bone as the person tested moves from at approximately 45 °

bent knee position to a normal standing position and measuring the forward flexibility of the ankle joint.

6. A method as described in claim 1, wherein the tendo Achillis center line is identified by tracing a line on the person'"'"'s skin.

7. A method as described in claim 6, further comprising the step of placing the person tested in a standing position on a mirror table wherein said determining step further includes the step of determining the type of arch of the foot by comparing the reflected image obtained on the mirror table to a plurality of predetermined types of feet.

8. A method as described in claim 6, further comprising the step of placing the person tested in a standing position on a mirror table wherein said determining step further includes the step of determining the type of arch of the foot by comparing the reflected image obtained on the mirror table to a plurality of predetermined types of feet and measuring the lateral movement of the malleol bone as the person tested moves from at approximately 45°

bent knee position to a normal standing position.

9. A method as described in claim 2, further comprising the step of placing the person tested in a standing position on a mirror table wherein said determining step further includes the step of determining the type of arch of the foot by comparing the reflected image obtained on the mirror table to a plurality of predetermined types of feet and measuring the forward flexibility of the ankle joint.

10. A method as described in claim 6, further comprising the step of placing the person tested in a standing position on a mirror table wherein said determining step further includes the step of determining the type of arch of the foot by comparing the reflected image obtained on the mirror table to a plurality of predetermined types of feet and measuring the lateral movement of the malleol bone as the person tested moves from at approximately 45°

bent knee position to a normal standing position and measuring the forward flexibility of the ankle joint.

11. A method as described in claim 2 wherein said heel center line is identified by placing a first dot and a second dot on the person'"'"'s skin.

12. A method as described in claim 11, further comprising the step of placing the person tested in a standing position on a mirror table wherein said determining step further includes the step of determining the type of arch of the foot by comparing the reflected image obtained on the mirror table to a plurality of predetermined types of feet.

13. A method as described in claim 11, further comprising the step of placing the person tested in a standing position on a mirror table wherein said determining step further includes the step of determining the type of arch of the foot by comparing the reflected image obtained on the mirror table to a plurality of predetermined types of feet and measuring the lateral movement of the malleol bone as the person tested moves from at approximately 45°

bent knee position to a normal standing position.

14. A method as described in claim 11, further comprising the step of placing the person tested in a standing position on a mirror table wherein said determining step further includes the step of determining the type of arch of the foot by comparing the reflecting image obtained on the mirror table to a plurality of predetermined types of feet and measuring the forward flexibility of the ankle joint.

15. A method as described in claim 11, further comprising the step of placing the person tested in a standing position on a mirror table wherein said determining step further includes the step of determining the type of arch of the foot by comparing the reflected image obtained on the mirror table to a plurality of predetermined types of feet and measuring the lateral movement of the malleol bone as the person tested moves from at approximately 45°

bent knee position to a normal standing position and measuring the forward flexibility of the ankle joint.

16. A method for determining the functional biomechanic type of a person'"'"'s foot and for pronation deficiencies, comprising the following steps:

placing the person'"'"'s foot in a neutral and unloaded position;

identifying the center line of the heel bone;

identifying the center line of the tendo Achillis;

placing the person tested in a standing position on a mirror table and determining the type of arch of the foot by comparing the reflected image obtained on the mirror table to a plurality of predetermined type of feet and reporting the result on a test sheet comprising a subnormal pronation section, a normal pronation section and an above normal pronation section;

measuring the angle between the heel bone center line and the tendo Achillis center line when the person stands with the knees bent at approximately 45°

(or 135°

between the upper leg and the lower leg) using an angle meter and reporting the result in a section of said test sheet corresponding to the measured angle determining the functional biomechanic type of the person'"'"'s foot from the test sheet results.

17. A method as described in claim 16, wherein the test sheet is selected such that it comprises a plurality of visual codes each corresponding to a particular pronation type.

18. A method as described in claim 16, wherein the test sheet is selected such that it comprises a plurality of visual codes each corresponding to a pronation type and said angle meter comprises a plurality of visual codes identical to those of said test sheet.

19. A method as described in claim 16, further comprising the step of choosing an appropriate insole by correlating said test results to a predetermined selection table.

20. A method as described in claim 16, further comprising the step of choosing a appropriate insole by correlating said test results to a predetermined selection table and wherein the test sheet is selected such that it comprises a plurality of visual codes each corresponding to a particular pronation type and said insoles are visually coded using said test sheet visual codes.

21. A method as described in claim 16, further comprising the step of measuring the varus or the valgus position of the foot at the level of the big toe and little toe joint using a straight line and reporting the result in a corresponding section of the test sheet.

22. A method as described in claim 21, wherein the test sheet is selected such that it comprises a plurality of visual codes each corresponding to a particular pronation type.

23. A method as described in claim 21, wherein the test sheet is selected such that it comprises a plurality of visual codes each corresponding to a pronation type and said angle meter comprises a plurality of visual codes identical to those of said test sheet.

24. A method as described in claim 21, further comprising the step of choosing an appropriate insole by correlating said test results to a predetermined selection table.

25. A method as described in claim 21, further comprising the step of choosing an appropriate insole by correlating said test results to a predetermined selection table and wherein the test sheet is selected such that it comprises a plurality of visual codes each corresponding to a particular pronation type and said insoles are visually coded using said test sheet visual codes.

26. A method as described in claim 21, further comprising the step of measuring the lateral movement of the malleol bone as the person'"'"'s tested moves from a 45°

bent knee position to a normal standing position and reporting the result in a corresponding section of the test sheet.

27. A method as described in claim 26, further comprising the step of measuring the forward angular flexibility of the ankle joint and reporting the result in a corresponding section of the test sheet.

28. A method as described in claim 26, wherein the test sheet is selected such that it comprises a plurality of visual codes each corresponding to a particular pronation type.

29. A method as described in claim 26, wherein the test sheet is selected such that it comprises a plurality of visual codes each corresponding to a pronation type and said angle meter comprises a plurality of visual codes identical to those of said test sheet.

30. A method as described in claim 26, further comprising the step of choosing an appropriate insole by correlating said test results to a predetermined selection table.

31. A method as described in claim 26, further comprising the step of choosing an appropriate insole by correlating said test results to a predetermined selection table and wherein the test sheet is selected such that it comprises a plurality of visual codes each corresponding to a particular pronation type and said insoles are visually coded using said test sheet visual codes.