LECTURE 3 Flashcards
fetal age number of muscle fibers are determined?
5 months fetal age
muscle macrostructure comprised of?
muscles
tendons
ligaments
types of muscle action?
concentric
isometric
eccentric
name the founders of the following theories?
tissue stress theory
sagittal plane theory
foot morphology theory
Kirby
Dananberg
Root
relies on the fact that mechanically-based pathologies of the foot and lower extremity all result from pathological magnitudes of stress acting within the structural components of the foot and lower extremity.
what is this theory?
Tissue Stress Theory
During walking, the center of body mass must
pass from behind the weightbearng foot to in
front of it. Because the range required for this
motion is approximately 5 times as great as
both frontal and transverse planes motion
what is this theory?
Sagittal Plane Theory
what percent does the foot morphology theory comprise the biomechanics formula?
70%
STJ ROM affects how many planes of motion?
triplane motion
classifications of foot pathology?
rearfoot varus
rearfoot valgus
forefoot varus
forefoot valgus
what makes up the mid tarsal joint?
characteristics?
talocalcaneal joint
calcaneal cuboid joint
choparts joint
triplane motion
frontal plane
inversion and eversion
two axes: longitudinal(inversion/eversion) and oblique (sagittal/transverse)
- longitudinal ROM=4-6 degrees
- oblique ROM is unknown
average angulation of the MTJ axis is?
55 degrees from sagittal and transverse planes
couple motions?
plantarflexion and adduction (PAD)
dorsiflexion and abduction (DAB)
MTJ ROM is dependent on?
STJs position
what is this foot pathology?
STJ maximal supinated
MTJ ROM decreased
forefoot plantar plane is inverted
forefoot varus
what is this foot pathology?
STJ is maximally pronated
MTJ ROM increased
forefoot plantar plane everted
forefoot valgus
