Anterior/Medial Thigh Flashcards
Cutaneous Nerves (4)
Lateral femoral cutaneous (L2/L3)
Anterior (intermediate and medial) cutaneous branches of femoral nerve (l2, l3, l4,)
Cutaneous branch of obturator
Saphenous nerve (continues from femoral n.)
Muscles of the anterior thigh (over view): 4
Ilioposoas
Sartorius
Quadriceps femoris
Tensor fascia lata (located in anterior thigh but innervated from gluteal region)
Chief flexor of thigh
Iliopsoas m
iliacus: femoral nerve (L2-L3)
Psoas major (L1-L3) ventral rami
Psoas minor (L1-L2)
“hip flexor”
iliopsoas m.
the longest muscle in the anterior thigh
sartorius m.
most superficial anterior muscle
femoral nerve
flex/abduct/laterally rotates thigh
Vastus lateralis/Vastus medialis
2 of 3 parts of quadratus femoris
femoral nerve
leg extension
Rectus femoris
1 muscle of quadratus femoris
femoral nerve
extends leg, flexes thigh
What muscles form the quadriceps tendon?
quadriceps femoris (vastus lateralis and medialis + the two rectus femoris)
Describe the chief extensors of the leg
quadriceps femoris (vastus lateralis/medialis, and rectus femoris): form quadriceps tendon, and then continue as ligamentum patella
innervated by femoral nerve
Medial thigh muscles (overview and function)
adduction
pectineus
adductor brevis
gracilis
adductor longus
adductor magnus
adductor hiatus
Pectineus m.
attachments
pecten line pubis (origin) pectineal line (insertion: just inferior to lesser trochanter)
femoral nerve
adduct & flex thigh
Attaches to the pecten line of pubis and pectineal line
pectineus
adducts and flexes thigh, and innervated by obturator nerve
adductor longus
a long strip like muscle, innervated by what?
gracilis, obturator nerve
lies deep to pectineus and adductor longus
adductor brevis
innervated by obturator n.
largest adductor muscle
adductor magnus
what are the two parts of the adductor magnus
the adductor portion and the hamstring portion
Proximal attachmens of the two parts of the adductor magnus
- Hamstring: ischial tuberosity
2. adductor part: ischiopubic ramus
Ischiopubic ramus —-
proximal attachment for the adductor portion of adductor magnus
ischial tuberosity —
proximal attachment for the hamstring portion of the adductor magnus
Hamstring of the Adductor magnus: attachments and innervation
adductor tubercle of medial epicondyle
ischial tuberosity
tibial division of sciatic nerve
adducts and extends thigh
Adductor of the adductor magnus: attachments and innervation
obturator
ischiopubic ramus, gluteal tuberosity, linea aspera, medial supracondylar line
Chief Extensors vs Chief Flexors of the thigh
Chief exstensors = quadriceps femoris
Chief flexors = iliopsoas
