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a foot orthosis, usually made of sheets of cork, to correct a dysfunction that results from anatomical limb length differences or decreased flexibility.
heel lift; HL the point during normal gait when the rearfoot ceases to weight-bear; see Table 1
|Phase of the cycle||Period||Comment|
|Stance phase (60%)||Contact||From heel strike to foot flat|
Foot unlocks to act as a shock absorber and adapt to irregularities in the ground surface
|Midstance||From foot flat to heel lift|
The total weight-bearing surface of the foot is in contact with the walking surface
|Propulsion||From heel lift to toe off|
Foot is a rigid and stable lever
|Swing phase (40%)||From toe off limb 1 to heel strike (limb 1)|
Body mass transfers from limb 1 to limb 2