Flashcards in Anterior and Medial Thigh Deck (32):
Name the hip flexors which are innervated by the femoral nerve.
Pectins us, sartorious and Iliacus.
What nerve innervates the psoas muscles?
Anterior rami of L1,L2 (L3).
State the functions of pectineus.
Pectineus adducts and flexes the thigh.
What are the attachments and insertions of psoas major?
It attaches to the transverse processes of the lumbar vertebrae and then distally to the lesser trochanter of the femur.
What is the insertion of psoas minor?
The pectineal line.
Name three hip flexors whose function is flexion of the hip and stabilisation of this joint.
Psoas major, minor and Iliacus
Where on the pelvis does sartorious originate?
Anterior superior iliac spine and the superior notch.
Where does sartorious attach?
What type of rotation at the hip does sartorius facilitate?
Name the four muscles responsible for extension of the knee.
Rectus femoris, Vastus medialis, lateralis and inter-medialis.
Where do all of the muscles of the anterior thigh attach?
They attach to the base of the patella, both individually and via the quadriceps tendon.
Which of the quadriceps muscles can also assist with hip flexion?
Where on the pelvis does Rectus femoris attach?
The anterior inferior iliac spine and ilium.
What is the origin of Vastus medialis?
Intertrochanteric line, and medial lip of linea Aspera.
What is the origin of Vastus lateralis?
Greater trochanter and lateral lip of linea Aspera.
What structure do the quadriceps indirectly attach to?
They attach to the. Tibial tuberosity indirectly via the patellar tendon.
What are the medial and lateral patella retinaculars?
These are aponeurosis by which Vastus medius and lateralis attach to the tibia and patella.
What nerve innervates the muscles of the medial thigh?
What nerve are the quadriceps innervated by?
Femoral nerve (L3,L4)
What is the role of obturator externus?
Stabilises the head of the femur within the acetabulum, and also laterally rotates the femur.
Where does obturator externus attach?
It attaches to the obturator foramen and the obturator membrane.
Where on the femur does adductor brevis attach?
Proximal part of linea Aspera and pectineal line.
Where on the pelvis do the adductor muscles insert?
Body of pubis and inferior Ramus of pubis.
Where on the femur does adductor longus attach?
Middle 1/3 of linea Aspera.
What functions does gracilis assist with?
Gracilis assists with medial rotation, flexion of knee and Adduction of thigh.
What structure passes through the adductor hiatus?
The femoral artery.
Where does adductor Magnus attach on the femur?
Gluteal tuberosity, linea Aspera and medial supracondylar line.
Comment on the structure of adductor Magnus.
This muscle has two parts, a hamstring portion (innervated by the tibial nerve L4) and an adductor portion (innervated by the obturator nerve L3,L4)
Starting from the abdominal aorta, name the vessels in the anterior thigh.
The abdominal aorta splits into two common iliac arteries which then split into internal and external portions. The deep artery of the thigh branches off the external iliac artery and gives rise to the medial and lateral circumflex arteries. The remaining portion of the external iliac is called the femoral artery.
Describe the path of the great saphenous vein.
This passes anteriorly to the medial malleolus, and then posterior to the medial epicondyle of the femur. It drains into the femoral vein via the saphenous opening.
Name the vein which runs posterior lay to the lateral malleolus and then up the back of the leg.
Small saphenous vein.