Thigh Flashcards
Sartorius
O: Anterior superior iliac spine
I: Superior aspect of the medial surface of the tibial shaft near the tibial tuberosity
Fx: Flexes and laterally rotates the hip joint and flexes the knee
nn: Femoral nerve (L2, L3, L4)
Name the boundaries of the femoral triangle
Inguinal ligament
Sartorius muscle
Adductor longus muscle
Where is the adductor canal located?
is an aponeurotic tunnel in the middle third of the thigh, extending from the apex of the femoral triangle to the opening in the adductor magnus, the adductor hiatus.
What structures run through the adductor canal?
Femoral artery, vein
saphenous N
N to Vastus medialis
Name the structures that run through the femoral canal
- NAVEL Femoral Nerve Femoral Artery Femoral Vein (Empty Space) Lymphatics
What spinal level is the obturator nerve associated with?
L2-L4
What types of muscles does the obturator nerve innervate?
medial compartment musclesv
List the muscles that the obturator nerve innervates
Posterior Branch Obturator externus Adductor brevis Adductor portion of adductor magnus Anterior Branch Adductor longus Gracilus Adductor brevis Cutaneous branches to skin on medial thigh
what spinal level is the sciatic nerve associate with?
L4-S3
What are the two branches of the sciatic nerve?
Tibial Nerve
Common Fibular Nerve
List the muscles that the common fibular nerve innervates
Biceps femoris (short head)
List the muscles that the Tibial nerve innervates
Biceps femoris (long head)
Semitendinosus
Semimembranosus
Pectineus
O: Pecten pubis and pectineal surface of the pubis
I: Pectineal line of femur
Fx: Adducts the thigh and flexes the thigh, helps with medial rotation
nn: Femoral nerve
Adductor Brevis
O: Anterior surface of inferior pubic ramus
I: Pectineal line of femur
Proximal part of medial lip of linea aspera
Fx: Adducts
flexes the thigh (minor)
nn: Anterior or posterior division of obturator nerve (L2, L3, L4)
Adductor Longus
O: Anterior surface of inferior pubic ramus, just lateral to pubic symphysis
I: Middle third of linea aspera
Fx: Adducts the thigh
nn: Anterior division of obturator nerve (L2, L3, L4)
Adductor Magnus
O:Inferior pubic ramus, ischial ramus (adductor part), and inferolateral area of ischial tuberosity (hamstring part)
I: Gluteal tuberosity of femur, medial lip of linea aspera, medial supracondylar ridge (adductor part) and adductor tubercle (hamstring part)
Fx: Powerful thigh adductor; superior horizontal fibers also help flex the thigh, while vertical- hamstring- fibers help extend the thigh
nn: Posterior division of obturator nerve innervates most of the adductor magnus; vertical or hamstring portion innervated by tibial nerve (L2, L3, L4)
the adductor magnus muscle has a tendinous opening known as what? what structures pass through this structure?
adductor hiatus, Femoral artery & vein
Gracilis
O: Body of inferior ramus of pubis
I: superior part of Medial surface of tibial shaft, just posterior to sartorius
Fx: adducts the thigh, flexes leg, and helps to medially rotate the tibia on the femur
nn: Anterior division of obturator nerve (L2, L3)
Tensor Fascia Lata
O: ASIS, outer lip of anterior iliac crest
I: Iliotibial band (lateral condyle of tibia)
Fx: Helps stabilize and steady the hip and knee joints by putting tension on the iliotibial band of fascia
nn: Superior gluteal nerve (L4, L5, S1)
Rectus Femoris
O: AIIS; ilium just above acetabulum
I:Base of patella (forms the more central portion of the quadriceps femoris tendon)
Fx: extends the knee
nn: muscular branches of femoral nerve (L2, L3, L4)
What two muscles of the medial thigh are not innervated by the nerve supplying the medial thigh (obturato nn.)
Pectineus
Adductor Magnus
Vastus Intermedius
O: Superior 2/3 of anterior and lateral surfaces of femur; also from lateral intermuscular septum of thigh
I: Lateral border of patella; also forms the deep portion of the quadriceps tendon
Fx: Extends the thigh
nn: Muscular branches of femoral nerve (L2, L3, L4)
Vastus Medialis “VMO”
O: Inferior portion of intertrochanteric line, spiral line, medial lip of linea aspera, superior part of medial supracondylar ridge of femur, and medial intermuscular septum
I: Medial base and border of patella; also forms the medial patellar retinaculum and medial side of quadriceps femoris tendon
Fx: Extends the knee
nn: Muscular branches of femoral nerve (L2, L3, L4)
Vastus Lateralis
O: Greater trochanter, wraps around to the superior portion of lateral lip of linea aspera
I:Lateral base and border of patella; also forms the lateral patellar retinaculum and lateral side of quadriceps femoris tendon
Fx: Extends the knee
nn: Muscular branches of femoral nerve (L2, L3, L4)
