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78 Cards in this Set
- Front
- Back
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what are the parts of uppers
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heel counter
vamp heel collar |
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what are the parts of the vamp
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toe box
tongue eyelets |
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advantages of nylon
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light weight
breathable |
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disadvantages of nylon
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not waterproof
less durable need additional support |
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sued is good for what
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additional support material
foxing |
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foxing
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materail placed in various areas of the uppers to privde support stability and reinforcement
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areas where foxing is used
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counter support
toe box medial and lateral sides |
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what is another way to add support to shoe
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stitching
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the major support of the shoe
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heel counter
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heel counter is usually made of what
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plastic
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fxn of heel counter
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improve stability of rearfoot
limit pronation control frontal plane motion prevents lateral shift |
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what increases effectiveness of heel counter
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firm material
extended counter foxing on counter rigid midsole jnct external heel stabilizer firm midsole |
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external heel stabilizer
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reinforcement at the heel counter midsole jct
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shank
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midfoot region of the shoe
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fxn of the shank
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support midfoot
provide stability against torsion/rotation resists collapse of shoe at midfoot |
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collar
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the opening of the shoe
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achilles notch
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debpression in the collar at center of heel counter
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toe box
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covers toes
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toe box should allow for what
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some dorsal motion
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what does foxing do to toe box
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lifts uppers from toes
limits external scuffing |
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if toe box is too low
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dorsal friction
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if toe box is too high
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excessive motion and blistering
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if toe box is too short/low
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runners toe (nail jamming)
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what are different eyelet patterns
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conventional
staggered speed laces rearfoot laces |
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fxn of insoles/sock liners
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reduces shock
increases cushion reduces shear/friction |
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materials for insoles
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plastazote
spenco PPT |
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what type of material is plastazote
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closed cell
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similar materials to plastazote
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pelite
puff |
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what type of material is spenco
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neoprene rubber with nitrogen bubbles and nylon covers
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spenco is good for what
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decreases shear friction
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what type of material is PPT/Poron
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open cell foam
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PPT best for what
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shock absorption and cushion
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PPT slow response best for what
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non-motion shock absorption
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material for standard sock liner
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EVA
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midsole
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area between uppers and outsole
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what do you want from a midsole
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stability in rearfoot and flexibility in forefoot
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fxn of midsole
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cushion/shock absorption
shoe stability |
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materials for missoles
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EVA
polyurethane foam |
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how is density of material measured
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durometer
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what is high density measure
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45+
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what is low density measure
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25
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high density materials are good for what
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stability
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low density materials are good for what
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shock absorption
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indications for high density midsoles
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heavier runners
stronger runners faster runners increased pronatory forces |
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low durometer material do what faster
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bottom out faster
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indications for low durameter midsole
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light runners
slower runners weaker runners more supinatory force |
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variable density midsoles
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combo of materials denser where its needed and softer where its needed
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modification of midsoles
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plugged midsole
perforated midsoles heel wedges heel lifts heel flares cantilever heeel biased heel |
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fxn of heel flares
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resist pronation, supination or heel strike shock
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fxn of cantilever heel
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increase shock absorption at heel strike
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fxn of biased heel
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to allow more posterior heel strike and rolling to plantar heel
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outsole
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contact portion of shoe with ground
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outsole should be what for running
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high density
durable some flexibility shock absorption |
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better for off road running
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waffle outsole
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better for track or court sports
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herringbone outsole
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high density material for outsoles
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carbon rubber
blown rubber |
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conventional last
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bottom of upper open
periphery of upper attached to midsole exposed area of midsole covered with cardboard |
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advantages of conventional last
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increased stiffness and more torsional stability
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slip moccasin last
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uppers stitched together at center
upper attached to midsole |
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combination last
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board last rearfoot with slip last forefoot
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california slip last
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upper is stitched to midsole material
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straight last
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bottom of shoe not curved in or out
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straight lasts are good for whom
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straight foot types and excessive pronators
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amount of inflare on inflare lasts
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15 degrees
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inflare lasts good for whom
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met adductus or cavus foot
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what will happen with rectus foot and curved shoe
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lateral crowding
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position of semi curved
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inflared about 7 degrees
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largest category of lasts made
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semi curved
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signs that it is time to replace shoes
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excessive outsole wear
midsole compression counter deterioration upper wear |
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when should you fit shoes
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at end of the day
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fit shoes the to what toe
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the longest one
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blisters or calluses
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spenco
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plantar fat pad thinning
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viscolas or sorbothane
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lacing for painful lump or swelling
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lace around the painful area
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for heel slippage
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place through last eyelet from outside and across to other side then through loop that has been created
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to decrease pressure on hallus from the shoe
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take one lace from distomedial eyelet to proximolateral eyelet
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for cavus feet
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all laces cross from medial to lateral along the external edges and pass more proximal under the throat
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wide forefoot and narrower midfoot/rearfoot
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use two shorter laces to creaste different tightnesses at either end
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