Lower Limb (pg 301-312) Flashcards Preview

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Flashcards in Lower Limb (pg 301-312) Deck (34):

The lumbosacral plexus is conformed by roots from which segments of the spinal cord ?

L2 to S3


The sciatic nerve is conformed by the join of two nerved which are ?

The tibial nerve
Common fibular nerve


Extension of the knee is performed by _______ compartment of the _________, which is innervated by _________?

THe anterior compartment of the thigh , innervated by the femoral nerve


The obturator nerve innervates the __________compartment of the ________ and its function is to __________ ?

Medial compartment of thigh, and adducts and medially rotates the thigh


The posterior compartment of the thigh, the leg and the plantar muscles of the foot are innervated by which nerve ?

The tibial nerve


The tibial nerve function ?

Flex knee
Extend thigh

Plantar flex foot (s1-S2)
Flex digits
Inversion of the foot


Eversion of the foot is activated by which nerve ?

The superficial fibular nerve innervating the lateral compartment.


A patient presents at the physical exam :
Absence of dorsi flexion of the foot, flexed fingers,and weak inversion of the foot.
The nerve involved might be ?

The deep fibular nerve innervating the anterior compartment of the leg


Stabilization of the pelvis and abduction of the hip is performed by ___________ innervated by _________ ?

Gluteus medius and minimus innervated by the superior gluteal nerve


A patient with impossibility for climbing stairs and unable to stand up might present lesion of which nerve fiber ?

The inferior gluteal nerve which innervates gluteus maximus


A patient with a lesion over the superior gluteal nerve will have what kind of signs ?

Trendelembur gait
Weakness of abduction of the hip


A patient presents a fracture at the level of the neck of the fibula , which nerve could be involved ?

The common fibular nerve


A lesion in the common fibular nerve produces which signs ?

Loss of dorsiflexion= drop foot (superficial)
Loss of eversion of the foot superficial
Sensory deficit at the dorsum of the foot.


At what level must be the lesion to produce sensory deficit of the posterior thigh and everything below the knee ?

The sciatic nerve


Weakened hip flexion
Weakened extension of the knee
Sensory loss on the anterior thigh
Compromised ?

THe femoral nerve


A complete lesion of the sciatic nerve produces sensory loss of the complete leg below the knee
True or false

The medial side wont be affected (Saphenous nerve)


A lesion in the deep fibular nerve will produce ?

Weakened inversion
Flexioned digits
foot drop
Sensory loss limited to the firs web


Which articulation is at risk of developing avascular necrosis as a complication of a fracture ?

The femoral head
Media femoral circumfle artery


Which structure pass by the femoral triangle from lateral to medial ?



The femoral artery starts at _____, enters the thigh at the anterior side the crosses to the back change its name to ______, which goes behind the knee.

The inguinal ligament, at the posterior side changes it name to popliteal artery.


The popliteal artery divides into ?

Anterior tibial artery
Posterior tibial artery


Which artery is used to feel the pulse at the dorsum of the feet ?

The dorsalis pedias atery branch from the anterior tibial artery.


The posterior compartment is irrigated by ?

The posterior tibial artery


Which places in the lower limbas can be used to measure the pulse ?

1) Femoral pulse
2) Popliteal pulse
3) Posterior tibial pulse
4)Dorsalis pedis pulse


Lesions of the anterior compartment, due to the high packaging of muscles, what important complication could happen ?

An anterior compartment syndrome
compress the anterior tibial artery


The anterior compartment of the thigh is irrigated by ______ and the posterior by _______ ?

The anterior by the femoral artery, and the posterior compartment by a branch of the femoral artery the deep femoral artery.


Which structures reinforce the knee joint ?

1) the meniscus
2) The collateral ligaments
3) the cruciate ligamaments


Why the medial meniscus is more commonly injured ?

because is less mobile being attached to the medial collateral ligament.


The tibial collateral ligament extends from to where?

From the medial epicondyle of the femur to the medial aspect of the tibia.


The fibular collateral ligament prevents ?
The tibial collateral ligament prevents ?

Fibular: Medial displacement
Tibial: Lateral displacement


Which ligament prevents anterior displacement of the tibia under the femur ?

The anterior cruciate ligament


The posterior cruciate ligament Prevents lesion from ?

Posterior displacement of the tibia under the femur


Which sign can be used to evaluate the cruciate ligaments ?

The posterior and anterior drawer signs


The terrible or unhappy triad is called TO?

1)Tibial collateral ligament
2) The medial meniscus
3) the ACL