MSK Lower Limb Flashcards
What are the superficial veins of the lower limb?
Great saphenous vein
Small saphenous vein
What does the great saphenous vein empty into?
Femoral vein
Where does the great saphenous ascend?
Anterior to the medial malleolus of the tibia
What does the small saphenous vein empty into?
Popliteal vein
Where does the small saphenous vein ascend?
Posterior to the lateral malleolus
What vein are varicose veins more common in?
Great saphenous vein
What is a common clinical problem of deep veins of the lower limb?
DVT
What does the superficial inguinal nodes of the lower limb drain?
Skin of buttocks
Thigh
Anterior calf
Dorsum of foot
What does the popliteal lymph nodes drain?
Skin of plantar side of foot
Posterior calf
What do the deep inguinal lymph nodes drain?
Superficial inguinal nodes
Popliteal nodes
Vessels accompanying the great saphenous vein are drained by what nodes?
Superficial inguinal nodes
Vessels accompanying the small saphenous vein are drained by what nodes?
Popliteal lymph nodes
What kind of joint is the hip joint?
Ball and socket synovial joint
What type of cartilage is the acetabular labrum?
Fibrocartilage
Function of the acetabular labrum
Provides an articulating surface for the head of the femur
Increases depth of the acetabulum
What are the 3 main ligaments of the hip joint?
Iliofemoral
Pubofemoral
Ischiofemoral
Function of the iliofemoral ligament
Prevents hyperextension of the hip
Function of the pubofemoral ligament
Prevents hyperabduction of the hip
Function of ischiofemoral ligament
Reinforce posterior aspect of joint capsule
What travels out of the great sciatic foramen?
Sciatic nerve
Superior gluteal vessels
Pudendal nerve
Piriformis tendon
What travels out of the lesser sciatic foramen?
Pudendal nerve
Internal pudendal artery
Internal pudendal vein
Obturator internus tendon
What are the muscles that flex the hip?
Iliacus
Psoas major
Pectinus
Innervation of the illiacus
Femoral nerve
Innervation of the pectinus
Femoral nerve
Innervation of the psoas major
L1-L3 anterior rami
What is the iliopsoas muscle?
Iliacus and psoas major muscle sharing a common tendinous attachment of the femur
What is the chief flexor of the thigh?
Quadriceps muscle
What is the main extensor of the hip?
Gluteus maximus
Muscles that extend the hip
Gluteus maximus Long head of biceps femoris Semimembranous Semitendinosus Posterior part of adductor magnus
Hamstring muscles
Biceps femoris long and short heads
Semitendinosus
Semimembranous
Innervation of the Semitendinosus
Tibial branch of sciatic nerve
Innervation of the semimembraneous
Tibial branch of sciatic nerve
Innervation of short head of biceps femoris
Common fibular nerve
Innervation of long head of biceps femoris
Tibial branch of sciatic nerve
Actions of the hamstring muscles
Extend hip
Flexion of knee
Medial rotation of knee
Innervation of pectinus
Femoral nerve
Muscles the adduct the hip
Pectineus Adductor longus Adductor brevis Gracilis Obturator externus Adductor magnus
Innervation of adductor longus
Obturator nerve
Innervation of adductor brevis
Obturator nerve
Innervation of adductor magnus
Obturator nerve
Innervation of gracilis
Obturator nerve
What is found in the adductor magnus?
Adductor hiatus
What passes through the adductor hiatus?
Femoral artery
Femoral vein
Actions of adductor longus and brevis
Adduction of hip
Flexion of hip
Internal rotation of hip
Actions of gracillis
Hip adduction
Assists in knee flexion
Muscles that abduct the hip
Gluteus medius
Gluteus minimus
Tensor fasciae latae (TFL)
Piriformis
What does an injury to the hip abductors cause?
Trendelenberg gait
What do the hip abductors contribute to?
Normal walking gait
What is the obturator internus tendon accompanied by?
Twin gemeli
Quadratus femoris
Where do lateral/external rotators of the hip cross the joint?
On the posterior side
Where do medial/internal rotators of the hip cross the joint?
On the anterior side
Muscles that internally rotate the hip
Gluteus medius (anterior part) Gluteus minimus (anterior part) Tensor fasciae latae
Innervation of the quadriceps femoris
Femoral nerve
How many heads does the quadriceps femoris have?
4
What are the 4 heads of the quadriceps femoris?
Rectus femoris
Vastus medialis
Vastus intermedius
Vastus lateralis
Function of rectus femoris
Stabilises joint
Helps iliopsoas flex hip joint
What do the 4 heads of the quadriceps unite to form and where?
Quadriceps tendon
Proximal to the platella
What does the quadriceps tendon continue as and where?
Platellar ligament
Distal to the platella
What does the platellar tendon attach to?
The tibial tuberosity
Actions of quadriceps muscles
Knee extensors
Hip flexors
Actions of the sartorius
Flexion of hip
Abduction of hip
Lateral rotation of hip
Flexion of knee
Where does the sartorius cross the joint?
Crosses hip joint anteriorly
Crosses knee joint posteriorly
Nerve roots of obturator nerve
L2-L4
How does the obturator nerve enter the medial thigh?
Via obturator canal
Where is the obturator canal found?
Obturator membrane in the obturator foramen
What does the obturator nerve innervate?
Medial compartment of thigh
Cutaneous sensations to skin of medial thigh
What is the main artery of the thigh?
Femoral artery
What is the femoral artery a continuation of?
External iliac artery
What level does the femoral artery arise?
L5
Where does the femoral artery enter the thigh?
Midway between the anterior superior iliac spine and the pubic symphysis
What is a branch of the femoral artery and where does it go?
Profunda Femoris artery
Passes posteriorly towards the hamstrings
What is the femoral vein a continuation of?
The popliteal vein
The femoral vein passes under _____ to continue as _____
The inguinal ligament
External iliac vein
What drains into the femoral vein in the femoral triangle?
Profunda femoris vein
Great saphenous vein
What is cannulation of the femoral vein used for?
Right cardiac angiography
Nerve roots of the femoral nerve
L2-L4
What is the largest branch of the lumbar plexus?
Femoral nerve
Course of the femoral nerve
passes deep to inguinal ligament
enters femoral triangle lateral to the femoral veins
What does the femoral nerve supply?
Sartorius
Pectinus
Iliacus
Quadriceps muscles
Why is the femoral triangle exposed?
Due to quadrupedal to bipedal stance
Medial border of femoral triangle
Adductor longus
Lateral border of the femoral triangle
Sartorius
Superior border of the femoral triangle
Inguinal ligament
What forms the base of the femoral triangle?
Pectinus
Illiopsoas
Adductor longus
Contents of the femoral triangle
Femoral nerve Femoral artery Femoral vein Femoral canal Deep inguinal lymph nodes Assosiated lymphatic vessels
What is the femoral sheath?
A funnel shaped fascial tube which surrounds the proximal parts of the femoral vessels (NOT the nerve) and creates the femoral canal medial to them, which contains lymphatic vessels
3 compartments of the femoral sheath
Lateral
Intermediate
Medial
What does the lateral compartment of the femoral sheath contain?
Femoral artery
Femoral branch of genitofemoral nerve
What does the intermediate compartment of the femoral sheath contain?
Femoral vein
What is the medial compartment of the femoral sheath?
Femoral canal
What does the femoral canal contain?
fat
loose connective tissue
efferent lymph vessels
a lymph node not embedded in lymphatic tissue (of cloquet)
Which gender gets femoral hernias more?
F > M
Pathology of femoral hernias
Femoral ring week area
Abdominal contents push into femoral canal within the femoral sheath