Thigh Region Flashcards
What do the cutaneous nerves of the lower limb supply?
The skin of the LE, according to each nerve’s dermatomal skin pattern
What are the superior, medial, and lateral boundaries of the femoral triangle?
Superior: the inguinal ligament
Medial: the lateral border of the adductor longus
Lateral: the sartorius
What is the adductor canal?
an aponeurotic tunnel in the middle third of the thigh in which the major neuromuscular bundle of the thigh runs
What is the adductor hiatus?
the opening in the adductor magnus muscle where the femoral artery and vein leave the adductor canal
What are the 3 main nerves of the thigh?
1) Femoral
2) Obturator
3) Sciatic
What does the femoral nerve innervate?
Motor nerves to the anterior thigh muscles and sensory nerves to the anteromedial side of the thigh
Which nerve is the terminal cutaneous branch of the femoral nerve?
Saphenous nerve
What does the saphenous nerve supply?
The skin and fascia on the anteromedial aspects of the knee, leg, and foot (dermatomes L2, 3, and 4)
The posterior branches of the obturator nerve supply what 3 muscles of the thigh?
- Obturator externus
- Adductor brevis
- Adductor portion of adductor magnus
The anterior branches of the obturator nerve supply what 3 muscles and what area of the thigh?
- Adductor longus
- Gracilis
- Adductor brevis
- Cutaneous branches to skin on medial thigh
The sciatic nerve is composed of what 2 nerves?
tibial and common fibular nerve
What 3 muscles does the tibial nerve innervate in the thigh?
- Biceps femoris (long head)
- Semitendinosus
- Semimembranosus
What muscle in the thigh does the common peroneal nerve innervate?
Biceps femoris (short head)
What is the articularis genu?
A small muscle deep to the quadriceps that pulls the suprapatellar bursa superiorly during extension of the knee which prevents impingement of the synovial membrane between the patella and the femur
What are the 4 quadriceps muscles?
- vastus lateralis
- rectus femoris
- vastus medialis
- vastus intermedius
