Anterior Thigh Flashcards
Sartorius Proximal?
Anterior Superior Iliac Spine
Sartorius Distal?
- Superior medial aspect of proximal Tibia
2. Pes Anserinus
Sartorius Action?
- Flexes hip
- Flexes knee
- External rotation and abduction of hip
All done together
Sartorius Nerve?
Femoral Nerve (L2-L3)
Rectus Femoris Proximal?
Anterior Inferior Iliac Spine
Rectus Femoris Distal?
Patella and Quadriceps tendon (Tibial Tuberosity)
Rectus Femoris Action?
- Extends knee
2. Flexes hip
Rectus Femoris Nerve?
Femoral Nerve (L2-L4)
Vastus Lateralis Proximal?
- Greater Trochanter
2. Lateral lip of Linea Aspera
Vastus Lateralis Distal?
Patella and Quadriceps tendon (Tibial Tuberosity)
Vastus Lateralis Action?
Extends knee
Vastus Lateralis Nerve?
Femoral Nerve (L2-L4)
Vastus Medialis Proximal?
- Intertrochanteric line of Femur
2. Medial lip of Linea Aspera
Vastus Medialis Distal?
Patella and Quadriceps tendon (Tibial Tuberosity)
Vastus Medialis Action?
Extends knee
Vastus Medialis Nerve?
Femoral Nerve (L2-L4)
Vastus Intermedius Proximal?
Anterior Lateral aspect of the Femoral shaft
Vastus Intermedius Distal?
Patella and Quadriceps tendon (Tibial Tuberosity)
Vastus Intermedius Action?
Extends knee
Vastus Intermedius Nerve?
Femoral Nerve (L2-L4)
Iliacus Proximal?
Iliac Crest
Iliacus Distal?
Lesser Trochanter
Iliacus Action?
- Flexes hip
2. Externally rotates femur
Iliacus Nerve?
Femoral (L2-L3)
Psoas Major Proximal?
T12-L5 vertebrae
Psoas Major Distal?
Lesser Trochanter
Psoas Major Action?
- Flexes hip
2. Externally rotates femur
Psoas Major Nerve?
Lumbar Nerves (Ventral Rami L1-L3)
Adductor Magnus Proximal?
- Anterior Fibers: Inferior Pubic Ramus
- Posterior Fibers: Ischial Tuberosity
- Oblique Fibers: Ischial Ramus
Adductor Magnus Distal?
- Linea Aspera
2. Adductor Tubercle
Adductor Magnus Action?
- Adducts thigh
2. Posterior fibers extend and laterally rotate the thigh
Adductor Magnus Nerve?
- Anterior Fibers: Obturator Nerve (L2-L4)
2. Posterior Fibers: Tibial Nerve (L4)
Adductor Longus Proximal?
Anterior surface of Pubis, just inferior to the Pubic Ramus
Adductor Longus Distal?
Medial lip of Linea Aspera on middle third of femur
Adductor Longus Action?
- Adducts thigh
2. Flexes hip from extended position
Adductor Longus Nerve?
Obturator Nerve (L2-L4)
Adductor Brevis Proximal?
Pubis
Adductor Brevis Distal?
- Proximal Portion of Linea Aspera
2. Pectineal Line
Adductor Brevis Action?
- Adducts thigh
2. Flexes hip from extended position
Adductor Brevis Nerve?
Obturator Nerve (L2-L4)
Gracilis Proximal?
Pubis (Inferior Pubic Ramus)
Gracilis Distal?
- Medial surface of proximal Tibia, inferior to Tibial Condyle
- Pes Anserinus
Gracilis Action?
- Adducts thigh
- Flexes knee
- Medially rotates Tibia
Gracilis Nerve?
Obturator Nerve (L2-L4)
Pectineus Proximal?
Pectineal line of Pubis
Pectineus Distal?
Pectineal line of Femur
Pectineus Action?
- Hip adduction
- Flexes thigh
- Medially rotates thigh
Pectineus Nerve?
Femoral Nerve (L2-L3)
What is important about the pubic symphysis?
- Fibrocartilage that allows pelvis to expand during childbirth
- Hormones called Relaxins work on it
What defines the borders of the hip joint capsule?
- Greater Trochanter
- Lesser Trochanter
- Intertrochanteric line
- Intertrochanteric crest
Why are the femoral condyles different sizes?
- medial condyle is bigger
- pelvis is wide which pushes the femoral head out from main axis
- lower leg needs to be perpendicular to the ground so the femur is angled to compensate
Importance of Adductor Tubercle and Adductor Hiatus?
- Adductor Magnus attaches to Adductor Tubercle and Linea Aspera
- creates opening for the Femoral Artery to travel through Adductor Hiatus from anterior to posterior thigh and become the Popliteal Artery
Importance of the patella and the patellar tendon?
- serve as a pulley, has synovial fluid
- increases lever arm of the leg and allows it to extend more
- allows force vector to point down
Lumbosacral plexus? Lumbar plexus? Sacral plexus?
Lumbosacral: T12-S3
Lumbar: T12-L5
Sacral: S1-S3
Lateral Femoral Cutaneous nerve roots? Innervation?
L2-L3
- travels underneath inguinal ligament
- innervates skin on lateral portion of thigh
Sciatic Nerve roots?
L4-S3
Femoral Nerve roots? Innervation?
L2-L4
- posterior division, but innervates anterior thigh
- travels underneath inguinal ligament
- innervates quad muscles, sartorius, pectineus
- cutaneous innervation for most of anterior thigh
- continues as saphenous nerve to innervate skin of lower leg on medial side
Obturator Nerve roots? Innervation?
L2-L4
- goes through Obturator Foramen, innervates adductor muscles
- (part of adductor magnus innervated by sciatic nerve)
- Innervates skin on medial thigh, small portion
Branches of Femoral Artery?
- Deep Femoral Artery
- Medial and Lateral Circumflex arteries come off Deep Femoral to anastomose around the femoral head
- Medial runs posterior and supplies most of Femoral head
- Lateral runs anterior
5 branches of Popliteal Artery?
-continuation of Femoral Artery
- Superior Lateral Genicular
- Superior Medial Genicular
- Middle Genicular
- Inferior Lateral Genicular
- Inferior Medial Genicular
-these arteries anastomose around knee
Gait Cycle?
single sequence of function of one limb
Stance phase of gait?
limb in contact with ground
Swing phase of gait?
foot in air for limb advancement
What are the major hip flexors?
- Psoas Major
- Iliacus
- Sartorius
- Rectus Femoris
Why is the Vastus Medialis bigger than the Lateralis?
keep patella from dislocating laterally
Boundaries of Femoral Triangle?
Superior: Inguinal Ligament
Medial: Adductor Longus
Lateral: Sartorius
Floor: Iliopsoas and Pectineus
Roof: Fascia Lata, Subcutaneous tissue and skin
Contents of Femoral Triangle?
- Femoral Nerve and branches
- Femoral Sheath
- Femoral Artery and Vein
- Femoral Canal (lymph nodes)
Adductor Canal boundaries?
Superior: Apex of Femoral Triangle
Anterior and Lateral: Vastus Medialis
Posterior: Adductor Longus and Magnus
Medial and Roof: Sartorius
Contents of Adductor Canal?
- Femoral Artery and Vein
- Saphenous Nerve (cutaneous)
- Nerve to Vastus Medialis (last branch of Femoral Nerve)