11. The Thigh :) Flashcards
What forms the linea aspera?
Linea aspera: gluteal tuberosity+pectineal line
Identify the following bones (colored) of the lower body.
blue: femur
green: patella
purple: tibia (more medial)
orange: fibula (more lateral)
What is the patella?
sesamoid bone: loose sitting in tendon
Which bone does all the weight bearing: tibia or fibula?
tibia
Identify the structures on the ANTERIOR aspect of the femur.
a) medial epicondyle
b) lateral epicondyle
RED DOT near medial epicondyle: adductor tubercle
Identify the following parts of the POSTERIOR aspect of the femur.
a) medial condyle
b) lateral condyle
c) linea aspera
d) lateral supracondylar ridge
e) medial supracondylar ridge
What is found between the tibia and fibula?
interosseus membrane: distribute force and weight to fibula
Idenitfy the following parts of the ANTERIOR aspect of the tibia.
top: medial condyle
middle: lateral condyle
bottom: tuberosity
Identify the various structures of the ANTERIOR aspect of the fibula and tibia.
What is found on the superior view of the tibia?
medial and lateral plateau that articulates with femur
Name the different posterior thigh muscles. Whats another name for this group.
Posterior thigh muscle=hamstring muscles
- bicep femoris (most lateral)
- semitendinous
- semimembranosus (most medial)
(all inn by sciatic n)
Identify the muscle in blue.
Hamstring: BICEP FEMORIS
Long Head
ori: ischial tuberosity
ins: head of fibula
inn: tibial division of sciatic n
act: extension of hip
Short head: (deep)
ori: linea aspera & lateral supracondylar ridge
ins: head of fibula
inn: common fibular division n
act: flexion @ knee & lateral rotation @ knee
Identify the muscle in green.
Hamstring:
SEMITENDINOUS
(1/2 tendon)
ori: ischial tuberosity
ins: surface of anterior tibia (medial to tibial tuberosity)=Pes anserinus (duck foot)
inn: tibial division sciatic n
act: flexion @ knee, medial rotation @ knee, extension hip
Identify the muscle in orange
Hamstring:
Semimembranosus
ori: ischial tuberosity
ins: medial condyle of tibia
inn: tibial divion of sciatic n
act: flexion @ knee, medially rotate knee, extend hip
Name the 6 different muscles of our anterior thigh.
anterior thigh (all inn by femoral n)
Quadratus Femoris group: rectus femoris, vastus lateralis, vastus intermedialis, vastus medialis
sartorius and iliopsoas
Where do the quadriceps femoris group all insert on?
Quadriceps femoris ( rectus femoris, vastus lateralis, vastus intermedius, vastus medialis)
all insert on quadriceps tendon=patellar ligament =knee cap (sesamoid bone)
(all inn by femoral n)
Identify the following muscle.
(part of quadriceps femoris-ant thigh compartment)
RECTUS FEMORIS
ori: AIIS (anterior inferior iliac spine)
ins: patella & tibial tuberosity
inn: femoral n
act: extension @ knee (kicking)
Identify the muscle in green.
(ant thigh: quadriceps femoris)
VASTUS LATERALIS
ori: greater trochanter & lateral lip of linea aspera
ins: patella & tibial tuberosity
inn: femoral n
act: extension at knee
Identify the muscle in orange.
(ant thigh-quadriceps femoris)
VASTUS MEDIALIS
ori: intertrochanteric line & medial lip of linea aspera
ins: patella & tibial tuberosity
inn: femoral knee
act: extension @ knee
Identify the muscle in purple.
(ant thigh- quadriceps femoris) VASTUS INTERMEDIUS (deep to rectus femoris)
ori: shaft of femur
ins: patella & tibial tuberosity
inn: femoral n
act: extension at knee
What are the two diseases due to abnormal q angles?
q angle: angle between femur and knee
- GENU VARUM: ‘bow legged’
more p on medial
- GENU VALGUM: ‘knock kneed’
more pressure on lateral
Identify this muscle.
(ant thigh)
SARTORIUS
ori: ASIS (anterior superior iliac spine)
ins: Pes anserinus (medial to anterior tibial tuberosity)
inn: femoral n
act: flexion @ hip, lateral rotation of hip, flexion @ knee
Name the 5 muscles part of the medial thigh.
medial thigh=adductor muscle group
- pectineus (inn by femoral n)
- adductor longus
- adductor brevis
- adductor magnus
- gracilis
- Obturator externus
(all inn by obturator n)
What is the border between the medial and anterior thigh compartment?
border: between ilipsoas and sartorius
Name the three muscles that insert on the pes anserinus.
Say Grace before Tea
Sartorius
Gracilius
semitendinosus
Identify this muscle.
(medial thigh: adduct. group)
GRACILIS
ori: inferior pubis ramus
ins: pes anserinus
inn: obturator n
act: adductor leg
Identify this green muscle.
(medial thigh: adductor)
PECTINEUS
ori: superior pubic ramus
ins: pectineal line of femur
inn: femoral n
act: adduct leg
Identify the muscle in blue.
(medial thigh: adduct group)
ADDUCTOR LONGUS
ori: body of pubis
ins: middle 1/3 of linea aspera
inn: obturator n
act: adduct leg
Identify the muscle in orange.
(medial thigh: adduct grp)
ADDUCTOR BREVIS
ori: body of pubis & inferior pubic ramus
ins: proximal linea aspera & pectineal line of femur
inn: obturator n
act: adduct leg
Identify this muscle.
(medial thigh: adduct group)
ADDUCTOR MAGNUS
(deepest)
Top: adductor part
ori: ischiopubis ramus
ins: gluteal line, linea aspera, medial supracondylar ridge
inn: obturator n
(in red: adductor hiatus)
Bottom: hamstirng part
ori: ischial tuberosity
ins: adductor tubercle
inn: tibial division of sciatic n
act: adduction of leg
What runs through the adductor hiatus?
the femoral a to feed to posterial popliteal fossa
Explain the venous drainage of the lower limb.
Vein gives off femoral vein and popliteal vein
- Femoral vein run medial anterior = great saphenous vein
Runs medial anterior of leg down to dorsal venous arch
runs back up medial posterior leg= small saphenous vein
- popliteal vein runs anterior medial thigh and meets with small saphenous vein
Explain the lymphatic drainage of the lower limb
- popliteal lymph nodes: responsible for posterior
- superficial inguinal lymph nodes: anterior and medial
What is found in the femoral triangle? What are the borders of the femoral triangle? base?
Femoral triangle: femoral V.A.N.
superior border: inguinal ligmament
medial border: adductor longus
lateral border: sartorius
base: ilipsoas & pectineus
What is found within the femoral sheat? outside?
inside: femoral a and v
outside: femoral n
Explain the various branches of the deep femoral artery.
