Mar 20, 2009 - A method and system for analyzing gait asymmetry between left and right feet of individuals by measuring and comparing stance phase time and/or stance phase force between left and .... and right shoes exceeds a predetermined threshold. ... during gaited motion; and to determine a difference betWeen.
US 20090240171A1
(19) United States (12) Patent Application Publication (10) Pub. No.: US 2009/0240171 A1 Morris Bamberg et al. (54)
(22)
METHOD AND SYSTEM FOR ANALYZING GAIT AND PROVIDING REAL-TIME FEEDBACK ON GAIT ASYMMETRY
Mar. 20, 2009
Provisional application No. 61/070,412, ?led on Mar.
20, 2008.
Stacy J. Morris Bamberg, Salt
Lake City, UT (US); Randy J. Carson, Salt Lake City, UT (US); Joseph B. Webster, Salt Lake City, UT (U S); Dante Bertelli, Salt Lake
City, UT (US)
Publication Classi?cation
(51)
Int. Cl.
A61B 5/103
(52) (57)
Correspondence Address:
(2006.01)
US. Cl. ...................................................... .. 600/595
ABSTRACT
A method and system for analyzing gait asymmetry between left and right feet of individuals by measuring and comparing
THORPE NORTH & WESTERN, LLP. PO. Box 1219
stance phase time and/or stance phase force between left and
SANDY, UT 84091-1219 (US)
(21) Appl. No.:
Filed:
Related US. Application Data
(60) (76) Inventors:
Sep. 24, 2009
(43) Pub. Date:
right feet during gait, and providing real-time sensory feed back if stance phase time/force inequality exceeds a prede termined threshold.
12/407,967
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Patent Application Publication
Sep. 24, 2009 Sheet 1 0f 4
82/
US 2009/0240171 A1
72 90
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10
Patent Application Publication
Sep. 24, 2009 Sheet 2 0f 4
US 2009/0240171 A1
)l____‘ Optionally calibrate sensors
l >
K
100
Read data from
1
Foot 1 (e.g. left)
i 104-“
Read data from Foot 2 (e.g. right)
Has Foot 2 No
completed
Is the user
Yes
walking?
stance ?
Determine stance phase time and/or stance phase force for the last stance of each foot
I
108
l
112
Calculate comparison parameters 1 (e.g. percent difference, left stance percent, right stance percent, etc.)
Does (do) the
comparison parameter(s) exceed he threshold(s)7
Yes
i
F'g- 2
Provide feedback (e.g. 116\ tactile, audio, visual, etc.)
ptionally tore data
Patent Application Publication
Sep. 24, 2009 Sheet 3 0f 4
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