Foot Anantomy Flashcards
The First Ray
first metatarsal and first cuneiform bones. Pronation of the subtalar joint lowers the first ray to the ground in early stanceand dissipates the shock of heel impact.
Second Ray
2nd metatarsal and 2nd cuneiform etc.
Fifth ray: just the 5th metarsal
First rocker:
calcaneus
Second rocker:
Talus: Dome creates the lower part of our second rocker
Third rocker:
Metatarsophalangeal joint
Midfoot:
Navicular, Cuboid, Cuneiforms
Pronation
DF, abduction, eversion
Supination:
PF, adduction, inversion
ER of normal foot:
7 degrees
see two toes
Compensated foot-
refers to a change in the structural alignment or position of one part of the foot to neutralize the effect of a structural problem in another part of the foot
Uncompensated
Uncompensated doesn’t tell you it the foot is normal or abnormal. It just is tell you that is isn’t changing its static position to deal
Relaxed calcaneal stance
The medial and lateral metatarsals are on ground
The lower extremity is vertical to floor (4deg)
The heel should be slightly twisted in (varus or inverted by 4 degrees)
Compensated Rearfoot Varus
The Subtalar joint possesses an adequate amount of pronation and the medial calcaneus is in contact with the ground.
Medial Translation (Shift)of the talus and lateral shift of the calcaneus
Increased rotation of the tibia
Flattening of arch – if mobile arch
Gait with compensated rearfoot varus:
Prolonged eversion of rear foot and flattening of arch
Heel whips to re-orient the foot
knees into valgum
Pelvis may anteriorly rotate
Some common conditions with compensated rearfoot varus
Subtalar joint arthritis Achilles tendinopathy Posterior tibial tendinopathy Medial tibial stress syndrome Knee pain with rotation of tibia Hip pain with rotation of femur
Shoes that might help/ Compensated RF Varus
Stability shoes with an insert
Need heel counter
Need torsional rigidity
Need excellent match of arch of foot/shoe
Need depth for insert
Need to address forefoot problems which may arise
Uncompensated rear foot varus
Calcaneus in varus Tibia in ER High arch Toe in contact w/ ground (PF 1st ray) Pressure on outer border of foot Often associated with wider foot typing
Gait with Uncompensated Rearfoot varus
High rigid arch through gait (compensated it was flattened)
Pressure on lateral border of foot
May have heel whip to compensate for out toe
The heel drives in and pulls out at an angle and there may be a pump bump