quiz 4 Flashcards
tibial (medial) collateral ligament function
resist forces that push the knee medially
what does tibial (medial) collateral ligament prevent?
valgus knee
fibular (lateral) collateral ligament function
resist forces that push the knee laterally
what does fibular (lateral) collateral ligament prevent?
varus knee
posterior cruciate ligament function
prevent anterior displacement of femur on tibia
anterior cruciate ligament function
prevents posterior displacement of femur on tibia
terrible triad of o’donoghue
injury to MCL, ACL, and medial meniscus
1st degree ligament injury
mild, no joint instability
2nd degree ligament injury
partial tear, some joint stability
3rd degree ligament injury
severe tear, joint instability, surgery needed
superior tibiofibular joint classification
synovial/planar/triaxial
middle tibiofibular joint classification
syndesmosis/interosseous membrane
distal tibiofibular joint classification
syndesmosis/tibiofibular ligament
tibialis anterior origin
lateral condyle + lateral tibia, interosseous membrane
tibialis anterior insertion
medial + plantar surfaces of metatarsal 1 or cuneiform bone 1
tibialis anterior innervation
deep fibular n
tibialis anterior action
dorsiflexion + inversion
extensor hallucis longus origin
medial fibula + interosseous membrane
extensor hallucis longus insertion
dorsal surface of base of distal phalanx of great toe
extensor hallucis longus innervation
deep fibular n
extensor hallucis longus action
extension of interphalangeal joint of hallux (great toe)
extensor digitorium longus origin
lateral condyle of tibia, fibula, interosseous membrane
extensor digitorium longus insertion
distal phalanges of lateral 4 digits
extensor digitorium longus innervation
deep fibular n