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Lower Limb Mechanics

WVSOM Class of 2012 Lower Limb Mechanics

QuestionAnswer
As limbs develop, a dorsal muscle mass differentiates from a what? ventral muscle mass
ventral muscle mass develops into what? flexors
dorsal muscle mass develops into what? extensors
the dorsal mass of the lower limb ends up being where? anterior
the ventral mass of the lower limb ends up being where? posterior and medial
anterior compartment of the thigh has what movement? posterior? medial extensor, flexor, adductor
the anterior compartment is innervated by what nerve? where is this located? femoral nerve
what are the knee extensors of anterior compartment: rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius
what are the hip flexors of anterior compartment: iliopsoas, rectus femoris, pectineus, sartorious
transitional muscle, functioning in both the anterior and medial compartments pectineus
what are the thigh adductors? adductor longus, adductor brevis, adductor magnus, gracilis
what are the thigh flexors? adductor magnus, adductor brevis, pectineus
what is the leg flexor? gracilis
medial compartment innervated by what nerve? obturator nerve
what muscle receives dual innervation from both the obturator n. and the sciatic n.? adductor magnus
what muscle receives dual innervation from both the obturator n. and the femoral n.? pectineus
posterior compartment innervated by what nerve? sciatic nerve
what are the thigh extensors? semimembranosus, semitendinosus
what are the knee flexors? semimembranosus, semitendinosus, biceps femoris
what are the medial rotators of the leg? semimembranosus, semitendinosus
what is the lateral rotator of the leg? biceps femoris
the hamstrings receive innervation from what division of the sciatic nerve? tibial
hamstrings are most active during what contractions? eccentric
in posterior comparment, what muscle receives innervation from the common fibular nerve? short head of biceps
Superficial Gluteal muscles innervated by what? superior inferior gluteal nerve
what is a thigh extensor? gluteus maximus
what is a thigh abductor? gluteus medus, gluteus minimus, tensor of the fascia lata
the lateral rotators of the deep gluteal muscles (red carpet) are what? piriformis, superior gemellus, obturator internus, inferir gemellus, quadratus femoris
The superior and inferior gemelli and obturator internus mm. comprise the what? triceps coxae
what innervates the deep gluteal muscles? L5-S1 ventral rami
what are the medial rotators of the gluteal muscles? gluteus medius, gluteus minimus, and tensor of the fascia lata
what are the lateral rotators of the gluteal muscles? red carpet muscles and gluteus maximus
what compartment is responsible for dorsiflexion? eversion? plantarflexion? anterior, lateral, posterior
Plantarflexion and dorsiflexion refer to motion at what joint? ankle
anterior compartment is innervated by what? deep fibular nerve
ankle and toe dorsiflexors (extensors) are: tibialis anterior, extensor digitorum longus, extensor hallucis longus, fibularis tertius
anterior compartment invertor? tibialis anterior
Plantarflexion is also correctly termed _______ while dorsiflexion is also correctly termed _________ flexion, extension
what is the strongest ankle dorsiflexor? tibialis anterior
Inversion and eversion refer to motion at the what joint? subtalar
inversion and eversion are often incorrectly termed what? supination, pronation
Dorsiflexion is relatively ______ compared to plantarflexion weak
the lateral compartment is innervated by what? superficial fibular nerve
lateral compartment muscles can assist in what motion of the ankle? plantarflexion
what is the primary function of the lateral compartment muscles? to stabilize the ankle during plantarflexion
what are the ankle evertors of the lateral compartment? Fibularis longus, Fibularis brevis, fibularis tertius
Superficial Posterior compartment is innervated by? tibial nerve
what are the plantarflexors of the superficial posterior compartment? triceps surae: gastrocnemius, soleus, plantaris
what Superficial Posterior compartment muscle can also weakly flex the knee? gastrocnemius
what Superficial Posterior compartment muscle is mainly a proprioceptor? plantaris
the main postural muscle of the triceps surae group: soleus
Deep Posterior compartment innervation? tibial nerve
deep posterior compartment Plantarflexors (and toe flexors): Flexor digitorum longus, Flexor hallucis longus, Tibialis posterior
deep posterior compartment Invertor: tibialis posterior
The tendency is for the foot to be ________ during weight bearing (plantarflexion): everted
the ___ of the foot must outweigh the power of the ___ in order to balance during weight bearing invertors, evertors
Pure plantarflexion (or dorsiflexion) involves what interaction? synergist-antagonist
is flexion related to adduction or abduction? adduction
what muscle of the anterior thigh is not innervated by the femoral nerve? what innervates it? iliopsoas; L1-L3 ventral rami
Created by: mhassan