Lower limb 1 Flashcards
2 superficial veins of lower limb
great and small saphenous
Which superficial vein ascends anterior to medial malleolus?
great saphenous
Which vein ascends posterior to lateral malleolus?
small saphenous
Which veins do small and great saphenous empty into?
great = femoral small = popliteal
Varicose veins (which vein more common?)
dilated superficial veins due to incompetent valves
great saphenous
Important LN arrangements
superficial and deep inguinal
popliteal
Hip joint type
synovial ball and socket
Why is hip joint more stable than shoulder joint?
deep socket, stability and weight bearing
What is the acetabular labrum?
fibrocartilaginous ring surrounding hip joint which increases its depth
Function of acetabular labrum
allow head of femur to articulate with pelvis
3 main ligaments of hip joint
iliofemoral
pubofemoral
ischiofemoral
Iliofemoral ligament prevents what?
hyperextension of hip joint
pubofemoral ligament prevents what?
hyperabduction of hip joint
Movements permitted at hip joint
flexion and extension
abduction and adduction
circumduction
medial and lateral rotation
Chief flexor of thigh
iliopsoas
Flexors of the thigh
iliopsoas
pectineus
sartorius
quadriceps femoris
Extensors of hip joint
gluteus maximus biceps femoris semitendinosis semimembranosus adductor magnus
Main extensor of hip joint
gluteus maximus
When is gluteus maximus strong and when is it relatively inactive?
sitting and climbing stairs
inactive when walking
What compartment of the thigh is responsible for adduction?
medial
adductor muscles
adductor magnus adductor longus adductor brevis gracilis obturator externus pectineus
Innervation of adductor compartment
obturator
How obturator nerve exits the pelvis?
via obturator canal which passes through obturator foramen
What muscles abduct the hip?
gluteus medius and minimus piriformis gemelli obturator internus TFL quadratus femoris
What prevents the pelvis dropping when 1 leg is raised?
abductors on the opposite side