Muscles of Anterior Comparment of Thigh

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					           Course Outline
Formation, Boundaries & Contents
 of Anterior Compartment of Thigh
Muscles of Anterior Compartment of
 Thigh, in respect to origin, insertion,
 action and nerve supply
      LEARNING OBJECTIVES
Describe Formation, Boundaries & Contents
 of Anterior Compartment of
Discuss the muscles of anterior compartment
 of thigh, with origin, insertion, nerve supply
 and actions.
Know the nerve supply of anterior
 compartment.
Formation of Compartments of Thigh




                  Thigh is divided into three
                  compartments by means three
                  intermuscular septa, named,
                  lateral, medial and posterior
                  which is not well defined.
                  There compartments are
                  anterior, posterior and medial
    Muscles of the Anterior Fascial
      Compartment of Thigh
1. Sartorius
2. Iliacus
3. Psoas
4. Pectineus
5. Quadriceps femoris
Nerve of this compartment is Femoral Nerve
Artery of this compartment is femoral artery
     Sartorius

ORIGIN:
  Immediately below
  anterior superior iliac
  spine.
INSERTION:
  Upper medial surface of
  shaft of tibia.
         Sartorius
NERVE:
 Anterior division of
 femoral nerve (L3, 4).
ACTION:
 Flexes, abducts,
 laterally rotates thigh
 at hip. Flexes,
 medially rotates leg at
 knee.
        ILIACUS
ORIGIN:
  Iliac fossa within
  abdomen.
INSERTION:
  Lowermost surface
  of lesser trochanter
  of femur.
  ILIACUS
NERVE Supply:
 Femoral nerve in
 abdomen (L2,3).
ACTION:
 Flexes medially
 rotates hip.
  PSOAS MAJOR
ORIGIN:
  Transverse processes
  of L1-5, bodies of
  T12-L5 and
  intervertebral discs
  below bodies of T12-
  L4.
INSERTION:
  Middle surface of
  lesser trochanter of
  femur.
PSOAS MAJOR
NERVE:
 Anterior primary
 rami of L1,2.
ACTION:
 Flexes and
 laterally rotates
 hip joint.
   PECTINEUS
ORIGIN:
  Pectineal line of pubis
  and narrow area of
  superior pubic ramus
  below it.
INSERTION:
  A vertical line between
  spiral line and gluteal
  crest below lesser
  trochanter of femur.
  PECTINEUS
NERVE:
 Anterior division of
 femoral nerve (L2, 3).
 Occasional twig from
 obturator nerve (anterior
 division - L2,3).
ACTION:
 Flexes, adducts and
 medially rotates hip joint.
               Quadriceps Tendon
Quadriceps femoris as name
    indicates, it consists four
    heads that means four
    muscles but there is also
    fifth muscles
1. Rectus Femoris
2. Vastus Lateralis
3. Vastus Medialis
4. Vastus Intermedialis
5. Articularis Genu
Articularis genu is a part of
    Vastus Intermedilais
   Rectus Femoris
Rectus means rectum Straight,
  Rectus Femoris has very
  straight course on the front of
  thigh & Bipinnate
ORIGIN:
  Straight head: anterior inferior
  iliac spine. Reflected head:
  ilium above acetabulum.
INSERTION:
  Quadriceps tendon to patella ,
  via ligamentum patellae into
  tubercle of tibia.
 Rectus Femoris
NERVE:
 Posterior division
 of femoral nerve
 (L3, 4).
ACTION:
 Extends leg at
 knee. Flexes thigh
 at hip.
   Vastus Lateralis
ORIGIN:
 Upper intertrochanteric line,
 base of greater trochanter,
 lateral linea aspera, lateral
 supracondylar ridge and
 lateral intermuscular septum.
INSERTION:
 Lateral quadriceps tendon to
 patella, via ligamentum
 patellae into tubercle of tibia.
 Vastus Lateralis
NERVE:
 Posterior division
 of femoral nerve
 (L3,4).
ACTION:
 Extends knee.
Vastus Medialis
ORIGIN:
  Lower
  intertrochanteric line,
  spiral line, medial linea
  aspera and medial
  intermuscular septum.
INSERTION:
  Medial quadriceps
  tendon to patella and
  directly into medial
  patella, via ligamentum
  patellae into tubercle
  of tibia.
  Vastus Medialis
NERVE:
 Posterior division of
 femoral nerve.
ACTION:
 Extends knee.
 Stabilizes patella.
Vastus Intermedialis
ORIGIN:
 Anterior and lateral shaft
 of femur.
INSERTION:
 Quadriceps tendon to
 patella, via ligamentum
 patellae into tubercle of
 tibia.
Vastus Intermedialis
NERVE:
 Posterior division
 of femoral nerve
 (L3, 4).
ACTION:
 Extends knee.
                Articularis Genu
ORIGIN:
 Two slips from anterior
 femur below vastus
 intermedialius.
INSERTION:
 Apex of suprapatellar bursa.
NERVE:
 Posterior division of femoral
 nerve (L3, 4).
ACTION:
 Retracts bursa as knee
 extends.
Quadriceps Tendon
Insertion of Quadriceps femoris

				
DOCUMENT INFO
Description: This presentation conatins muscles of anterior compartment of thigh