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ANTERIOR & MEDIAL COMPARTMENTS OF THIGH

Explore the anterior and medial compartments of the thigh, including muscle names, origins, insertions, nerve supplies, actions, and anatomy of the femoral triangle and adductor canal.

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ANTERIOR & MEDIAL COMPARTMENTS OF THIGH

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  1. ANTERIOR & MEDIAL COMPARTMENTS OF THIGH Prof. Ahmed Fathalla & Dr. SanaaAlshaarawy

  2. OBJECTIVES At the end of the lecture, students should: • List the name of muscles of anterior compartment of thigh. • Describe the anatomy of muscles of anterior compartment of thigh regarding: origin, insertion, nerve supply and actions. • List the name of muscles of medial compartment of thigh. • Describe the anatomy of muscles of medial compartment of thigh regarding: origin, insertion, nerve supply and actions. • Describe the anatomy of femoral triangle & adductor canalregarding: site, boundaries and contents.

  3. HIP JOINT

  4. The thigh is divided into 3 compartments by 3 intermuscular septa (extending from deep fascia into femur) • Anterior Compartment • Extensors of knee: • Quadriceps femoris • Flexors of hip: • 1. Sartorius • 2. Pectineus • 3. psoas major • 4. Iliacus • Nerve supply: • Femoral nerve • Medial Compartment • Adductors of hip: • 1. Adductor longus • 2. Adductor brevis • 3. Adductor magnus • (adductor part) • 4. Gracilis • Nerve supply: • Obturator nerve • Posterior Compartment • Flexors of knee & extensors of hip: • Hamstrings • Nerve supply: • Sciatic nerve

  5. ANTERIOR COMPARTMENT OF THIGH I NERVE SUPPLY: Femoral nerve PM P S V L RF Quadriceps femoris Vastus Intermedius (deep to rectus femoris) V M

  6. SARTORIUS ORIGIN Anterior superior iliac spine INSERTION Upper part of medial surface of tibia ACTION (TAILOR’S POSITION) Flexion, abduction & lateral rotation of hip joint Flexion of knee joint S S

  7. PECTINEUS ORIGIN: Superior pubic ramus INSERTION: Back of femur (below lesser trochanter) ACTION: Flexion & adduction of hip joint P P

  8. ILIOPSOAS: ILIACUS & PSOAS MAJOR INSERTION: Lesser trochanter of femur I P M I P M ACTION: Flexion of hip joint

  9. QUADRICEPS FEMORIS ORIGIN: Rectus femoris: Anterior inferior iliac spine (Hip bone) Vastusintermedius: Front of shaft of femur Vastusmedialis: Posterior border of femur Vastuslateralis: Posterior border of femur

  10. QUADRICEPS FEMORIS INSERTION: Into PATELLA (Patella is a sesamoid bone) From patella into TUBEROSITY OF TIBIA through LIGAMENTUM PATELLAE (PATELLAR LIGAMENT) ACTION: Extension of knee joint

  11. MEDIAL COMPARTMENT OF THIGH MUSCLES: Adductor longus Adductor brevis Adductor magnus (Adductor part) Gracilis ACTION: ADDUCTION OF HIP JOINT N.B.: Gracilis also flexes knee joint + adduction of thigh NERVE SUPPLY: OBTURATOR NERVE AB AL G AM Adductor magnus (Adductor portion) Adductor magnus (Hamstring portions)

  12. Origin • Inferior pubic ramus • Ischial ramus. Ischial tuberosity • Body of pubis • Body of pubis • Inferior pubic ramus Adductor part Adductor hiatus Hamstring part Adductor magnus (adductor part) Gracilis Adductor longus Adductor brevis Insertion • Upper part of medial • surface of tibia • (behind sartorius) • Posterior border of femur (Linea Aspera)

  13. FEMORAL TRIANGLE SITE: Upper third of front of thigh BOUNDARIES: Base: inguinal ligament Lateral: medial border of sartorius Medial: medial border of adductor longus ROOF: Skin Fasciae: superficial & deep FLOOR: From medial to lateral Adductor longus Pectineus Psoas major Iliacus Base: inguinal ligament I PM Lateral P A L Medial S

  14. FEMORAL TRIANGLE CONTENTS: Femoral vein Femoral artery Both vein & artery are enclosed in a fascial envelope (Femoral sheath) Femoral nerve Deep inguinal lymph nodes

  15. DEFINITION: intermascular passage for A fascial envelope for femoral artery & vein SITE: In middle third of front of thigh EXTENT: From apex of femoral triangle to adductor hiatus (in adductor magnus) BOUNDARIES: *Roof: Sartorius *Floor: Adductor longus & magnus ADDUCTOR CANAL (Subsartorial canal)

  16. THANK YOU

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