Overview of the anatomy of the lower limb Flashcards
What are the four major parts of the lower limb?
Foot, leg, thigh, pelvic girdle
Where is the leg?
Knee to ankle
What are the two rings of the inguinal canal?
Deep and superficial
Where is the deep ring of the inguinal canal located?
More lateral
Medial to digastric vessel
Where is the superficial ring of the inguinal canal located?
Triangular opening at medial end of ext oblique aponeurosis sup lat to pubic tubercle
What does the inguinal canal do?
Transmits structures from the pelvis to the perineum
How is the inguinal canal formed?
Fetal migration of gonads from abdomen to labioscrotal folds
What dos the inguinal canal contain for males?
Spermatic cord
What does the inguinal canal contain for females?
Round ligament
What contents of the inguinal canal are common for both males and females?
Ilioinguinal nerve and genital branch of genitofemoral nerve
Where is an indirect hernia located?
Deep ring, lateral to vessels
Where is a direct hernia located?
Medial side of vessels
How can you detect a hernia?
Feel for tapping
What does MALT stand for?
- M: internal oblique Muscle, transversus abdominus Muscle
- A: external oblique Aponeurosis, internal oblique Aponeurosis
- L: inguinal Ligament, lacunar Ligament
- T: Transversalis fascia, conjoint Tendon
Where is MALT located?
Travels anticlockwise from roof of inguinal canal
What are the three borders of the femoral triangle?
Inguinal ligament superiorly
Adductor longus medially
Sartorius laterally
Where is the inguinal ligament?
Between hip and pubic symphysis
Where is the sartorius located?
Anterior superior fossa to tibia
What does the sartorius do?
Helps hip flexion
What does NAVY stand for?
Femoral Nerve, femoral Artery, femoral Vein, Y-fronts
What shape is the popliteal fossa?
Diamond
What are the borders of the popliteal fossa?
Laterally: biceps femoris
Medially: semitendinosus and semimembranosus
What does the tibia nerve split into in the popliteal fossa?
Popliteal artery
What is Baker’s cyst?
Synovial out-pouching between MHG and semi-membranous
What is popliteal artery entrapment syndrome?
Pinched by MHG
What blood vessels and nerves are in the popliteal fossa?
Popliteal artery, popliteal vein, tibial nerve and peroneal nerve
What do flexors do?
Decreases angle between bones at a joint
What do extensors do?
Increases angle between bones
What do adductors do?
Bringing thighs together
Muscles in the anterior compartment
Sartorius, quadriceps, articularis genus
What are the four heads of the quadricep?
Rectus femoris
Vastus lateralis
Vastus intermedius
vastus medialis
Which nerve innervates the anterior compartment?
Femoral nerve
Which muscles are in the medial compartment?
Pectineus, external obturator, gracilis, adductors (longus, brevis, minimus)
Which nerve innervates the medial compartment?
Obturator
Which muscles are in the posterior compartment?
Adductor Magnus, biceps femoris, semitendinosus and semimebranosus
Which muscle innervates the posterior compartment?
Sciatic nerve
What does the anterior compartment do?
Extend knee and flex hip