biomechanics 2 Flashcards
Craigs test
femoral anteversion
lay in prone or supine, feel for greater troch to pop out most (rotate limb), look at angle of femoral condyles in supine or rotation of tibia in prone
femoral loading w/ coxa vara
more superiorly on head, leads to more bending force –> can predispose to fracture
more contact force from abductors having to work for more torque from decreased functional length
coxa profunda vs. protrusio
profunda: deep
protrusio: deep with a roof
iliofemoral ligament prevents
hyperextension
transverse/superior arm rests ER and ADD too
pubofemoral ligament prevents
ABD and ext
ischiofemoral ligament prevents
hip hyperflexion, IR, add
which position is more stable nutation or counternutation?
nutation, happens in standing
the ACL becomes taut with
extension
max patellar contact is at
60-90 degrees of flexion
increased knee angle ____ (increases/decreases) compression force
increases (60-90 degrees is max)
more q angle equals…
more lateral bias of the patella
screw home is knee joint or tibial ….
ER
closed packed position of the ankle
DF due to anterior being wider portion of the talus
deltoid ligament of the ankle prevents
eversion
tibionavicular: PF
tibiocalcaneal: eversion only
tibiotalar: talar: DF
ligaments that resist ankle inversion
anterior and posterior talofibular
calcaneofibular
