Lower Limb 1 - Bones of Lower Limb, Venous & Lymphatic Drainage & Dermatomes, Hip Joint, Femoral Triangle, Lumbar Plexus, Anterior Thigh Flashcards
What are the two superficial veins of the lower limb?
1 - Great saphenous vein
2 - Small saphenous vein
Which of the superficial veins ascends anterior to the medial malleolus of the tibia?
Great saphenous
Which of the superficial veins of the lower limb ascends posteriorly to the lateral malleolus?
Small saphenous
Which superficial vein of the lower limb empties into the femoral vein?
Great saphenous vein
Which superficial vein of the lower limb empties into the popliteal vein?
Small saphenous vein
What causes varicose veins and in which vein of the lower limb are they most commonly found?
Varicose veins are caused by dilation of superficial veins due to valve incompetence
Varicose veins usually associated with the great saphenous vein
What are the causes of thrombus formation and venous stasis?
Thrombus formation - venous stasis
Venous stasis:
1 - Muscular inactivity (during a long flight)
2 - External pressure on veins (tight cast, bandages or stockings)
What are the 2 categories of lymph nodes of the lower limb?
1 - Superficial
2 - Deep
What are the important lymph nodes of the lower limb?
1 - Superficial Inguinal
2 - Deep Inguinal
3 - Popliteal lymph nodes
The lymph vessels which travel with the great saphenous and small saphenous veins enter into which group of lymph nodes?
Lymph vessels of Great Saphenous vein - Superficial Inguinal nodes
Lymph vessels of Small Saphenous vein - Popliteal lymph nodes
Which lymph nodes become enlarged if there is infection of the lower limb or the trunk inferior to the umbilicus (e.g. perineum)?
Superficial Inguinal nodes
Which dermatome innervates the anterior aspect of the knee and the lower part of the thigh?
L3
Which dermatome innervates the posterior aspect of the knee?
S2
Which dermatome innervates lateral anterior and posterior aspects of the calf?
L5
Which dermatome innervates the medial anterior and posterior aspects of the calf?
L4
Which dermatome innervates the lateral aspect of the sole of the foot to the heel of the foot?
S1
Which dermatome innervates the medial aspect of the foot?
L5
What type of joint is the hip joint?
Ball and socket synovial joint
Why is the hip joint more stable than the shoulder joint?
1 - It is deeper
2 - It is stabilised by the fibrocartilaginous collar called acetabular labrum
What is the function of the acetabular labrum?
It deepends the joint, making it more stable
Which ligament of the hip joint prevents hyperextension of the hip joint?
Iliofemoral ligament
Which ligament of the hip prevents hyper abduction of the hip joint?
Pubofemoral ligament
What are the movements permitted at the hip joint?
1 - Flexion/extension
2 - Abduction/adduction
3 - External/Internal rotation
4 - Circumduction
What are the muscles which flex the hip joint?
1 - Iliopsoas
2 - Pectineus
Which muscle is the chief flexor of the thigh?
Ilipsoas (Iliacus and Psoas Major combined)
Which muscles extend the hip joint?
Gluteus Maximus (main extensor)
Hamstrings
Adductor Magnus
Which individual muscles make up the hamstrings?
Biceps Femoris
Semitendinosus
Semimebranous
Which muscles adduct the thigh at the hip joint?
1 - Adductor Magnus
2 - Adductor Longus
3 - Adducotr Brevis
4 - Gracilis
5 - Obturator Externus
Which nerve innervates the adductor muscles of the thigh (medial compartment)
Obturator nerve
Through which opening does the obturator nerve pass when leaving the pelvis?
Obturator Foramen