slideshow: anterior thigh
TRANSCRIPT
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Anterior Thigh
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The thigh is the region between the hip and
knee joints
Hip Joint
Knee Joint
Thigh
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The region below the knee joint is the leg
Hip Joint
Knee Joint
Thigh
Leg
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The thigh is divided into 3 functional compartments
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The thigh is divided into 3 functional compartments
1. Anterior or Extensor compartment
1. Medial or Adductor compartment
1. Posterior or Flexor compartment
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The thigh is divided into 3 functional compartments
The anterior and posterior compartments are separated by the medial and lateral intermuscular septa
The adductor muscles do not have a fascial boundary, but are continuous with the posterior compartment
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Skin
Thigh compartments
mediallateral
posterior
anterior
Cross section through right
mid-thigh looking towards hip joint
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SeptaSeptaSubcutaneous Fat
Thigh compartments
mediallateral
posterior
anterior
Cross section through right
mid-thigh looking towards hip joint
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Femur
SeptaSepta
Thigh compartments
mediallateral
posterior
anterior
Cross section through right
mid-thigh looking towards hip joint
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Femur
SeptaSepta
Thigh compartments
mediallateral
posterior
anterior
Cross section through right
mid-thigh looking towards hip joint
medial intermuscular septum
lateral intermuscular septum
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Femur
SeptaSepta
Thigh compartments
mediallateral
posterior
anterior
Cross section through right
mid-thigh looking towards hip joint
Posterior / Flexor compartment
Medial / Adductorcompartment
Anterior / Extensorcompartment
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Muscles of the Anterior Compartment of the Thigh
Sartorius
Quadriceps Femoris- Rectus Femoris- Vastus Lateralis- Vastus Intermedius- Vastus Medialis
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Muscles of the Anterior Compartment of the Thigh
Sartorius
Quadriceps Femoris- Rectus Femoris- Vastus Lateralis- Vastus Intermedius- Vastus Medialis
Adductor Longus and Pectineus are sometimes considered to be part of both the anterior and adductor compartments
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Muscles of the Anterior Compartment of the Thigh
Sartorius
Quadriceps Femoris- Rectus Femoris- Vastus Lateralis- Vastus Intermedius- Vastus Medialis
Adductor Longus and Pectineus will be discussed in the adductor compartment section
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Sartorius
Arises from
Anterior Superior Iliac Spine
Inserts onto
Tibia (upper medial surface)
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Sartorius
Flexes, abducts and laterally rotates thigh at hip joint
Flexes, medially rotates leg at knee joint
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The medial border of Sartorius forms the lateral boundary of
the Femoral TrianglePatella
Sartorius
Anterior Superior Iliac Spine
Femoral Triangle
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Femur
SeptaSepta
Thigh compartments
mediallateral
posterior
anterior
Cross section through right mid-
thigh looking towards hip joint
Posterior / Flexor compartment
Medial / Adductorcompartment
sartorius
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The predominant muscle of the Anterior Compartment
is
Quadriceps Femorisa powerful extensor of the
knee joint
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The anterior muscle of Quadriceps
Rectus Femoris
It is the only member of Quadriceps that attaches to the hip bone
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Arises from two heads
Straight headAnterior inferior iliac spine
Reflected headjust superior to the acetabulum
Rectus Femoris
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Inserts onto the Patella via the Quadriceps
tendon
Patella
Rectus Femoris
Rectus Femoris
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Femur
SeptaSepta
Thigh compartments
mediallateral
posterior
anterior
Cross section through right mid-
thigh looking towards hip joint
Posterior / Flexor compartment
Medial / Adductorcompartment
sartoriusrectus femoris
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Vastus Medialis
Lies under Rectus Femoris
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Arises from posterior Femur
- Linea Aspera
- Medial Supracondylar Ridge
Posterior Femur
Vastus Medialis
It wraps itself around the medial aspect of the
Femur
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Linea Aspera
Medial Supracondyl
ar Ridge
Vastus Medialis
Patella
Inserts onto the Patella via the Quadriceps
tendon
Posterior Femur
Rectus Femoris
Vastus Medialis
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Femur
SeptaSepta
Thigh compartments
mediallateral
posterior
anterior
Cross section through right mid-
thigh looking towards hip joint
Posterior / Flexor compartment
Medial / Adductorcompartment
sartoriusrectus femoris
vastus medialis
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Arises from posterior Femur
- Linea Apsera
- Lateral Supracondylar Ridge
Posterior Femur
Vastus Lateralis
It wraps itself around the lateral aspect of the Femoral
shaft
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Linea Aspera
Lateral Supracondyl
ar Ridge
Vastus Lateralis
Patella
It inserts onto the lateral border of the Patella and blends with the
Quadriceps tendon
Posterior Femur
Vastus Lateralis
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Femur
SeptaSepta
Thigh compartments
mediallateral
posterior
anterior
Cross section through right mid-
thigh looking towards hip joint
Posterior / Flexor compartment
Medial / Adductorcompartment
sartoriusrectus femoris
vastus medialis
vastus lateralis
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Vastus Intermedius
Is very deeply placed
Arises from anterior and lateral surfaces of Femur
Its fibres end in a superficial aponeurosis which forms the deep part of the Quadriceps tendon
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Femur
SeptaSepta
Thigh compartments
mediallateral
posterior
anterior
Cross section through right mid-
thigh looking towards hip joint
Posterior / Flexor compartment
Medial / Adductorcompartment
sartoriusrectus femoris
vastus medialis
vastus lateralis
vastus intermedius
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Nerve Supply
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Sartorius is innervated by the
Femoral Nerve
an important branch of the Lumbar
Plexus
Sartorius
Lumbar Plexus
Femoral Nerve
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Each head of Quadriceps Femoris
receives its nerve supply from a separate branch of
the
Femoral Nerve
Femoral Nerve
Quadriceps Femoris
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Summary of muscles of anterior compartment of the thigh
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SartoriusOrigin Anterior superior iliac spine
Insertion Superior aspect of the medial surface of the tibial shaft near the tibial tuberosity
Action Flexes and laterally rotates the hip joint and flexes the knee
Nerve Supply Femoral nerve (L2, L3, L4)Blood Supply Femoral artery
Anterior Thigh
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Anterior Thigh
Rectus FemorisOrigin Straight head from anterior inferior
iliac spine;Reflected head from groove just above acetabulum
Insertion Base of patella to form the more central portion of the quadriceps femoris tendon
Action Extends the knee
Nerve Supply femoral nerve (L2, L3, L4)
Blood Supply Lateral circumflex femoral artery
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Vastus MedialisOrigin Inferior intertrochanteric line, spiral
line, medial lip linea aspera, superior medial supracondylar ridge of femur, medial intermuscular septum
Insertion Medial base and border of patella; medial patellar retinaculum, medial side of quadriceps femoris tendon
Action Extends the knee
Nerve Supply femoral nerve (L2, L3, L4)
Blood Supply Femoral artery, profunda femoris artery, and superior medial genicular branch of popliteal artery
Anterior Thigh
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Vastus LateralisOrigin Superior intertrochanteric line,
anterior and inferior borders of greater trochanter, superior portion of lateral lip of linea aspera, and lateral portion of gluteal tuberosity of femur
Insertion Lateral base and border of patella lateral patellar retinaculum and lateral quadriceps femoris tendon
Action Extends the knee
Nerve Supply femoral nerve (L2, L3, L4)
Blood Supply Lateral circumflex femoral artery
Anterior Thigh
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Anterior Thigh
Vastus IntermediusOrigin Superior 2/3 of anterior and lateral
surfaces of femur; also from lateral intermuscular septum of thigh
Insertion Lateral border of patella; also forms the deep portion of the quadriceps tendon
Action Extends the knee
Nerve Supply femoral nerve (L2, L3, L4)
Blood Supply Lateral circumflex femoral artery