Term
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Definition
| made up of the talonavicular and calcaneocuboid joints |
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Term
| ligaments of the midtarsal joint |
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Definition
bifurcate ligament
short plantar ligament
long plantar ligament
spring ligament |
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Term
|
Definition
15 degrees from transverse plane
9 degrees from sagittal plane
primarily frontal plane motion - inversion and eversion |
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Term
|
Definition
52 degrees from transverse plane
57 degrees from sagittal plane
dorsiflexion with ABduction
plantarflexion with ADduction |
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Term
|
Definition
| oblique axis - can compensate for lack of ankle dorsiflexion |
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Term
|
Definition
MTJ axes become more parallel
this "unlocks" MTJ
allows foot to become a mobile adaptor |
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Term
|
Definition
MTJ axes cross
this "locks" MTJ
allows foot to become a rigid lever |
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Term
| OKC - contact period of gait |
|
Definition
OA - pronated
LA - supinated
STJ - pronating allowing shock absorption |
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Term
|
Definition
OA - pronated
LA - pronated
STJ - supinating in preparation for propulsion |
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Term
|
Definition
OA - supinated
LA - pronated
STJ - supinated |
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Term
|
Definition
as heel lifts during gait, toes passively dorsiflex
met heads acts as a pully mechanism |
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Term
| uncompensated forefoot varus |
|
Definition
| forefoot varus greater than calcaneal eversion available - calcaneus can't evert past neutral |
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|
Term
| partially compensated forefoot varus |
|
Definition
| forefoot varus greater than calcaneal eversion available - calcaneus can evert but not to same degree as forefoot varus |
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|
Term
| compensated forefoot varus |
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Definition
| forefoot varus equal or less than available calcaneal eversion |
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|
Term
| order of compensations for forefoot valgus (LASOS) |
|
Definition
LA supination
STJ supination
OA supination
further STJ supination |
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Term
|
Definition
| if only LA compensation is needed |
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|
Term
|
Definition
if STJ or OA compensation is needed
heel will be inverted |
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