Medial Thigh

Question 1

The muscles in the medial compartment of the thigh are collectively known as the….

Answer 1

• Hip adductors

Question 2

Name the 6 muscles found in the medial compartment of the thigh:

Answer 2

• Gracilis
• Obturator externus
• Pectineus
• Adductor brevis
• Adductor longus
• Adductor magnus

Question 3

Adductor Magnus (Adductor and Hamstring Part):

• Description (2)
• Attachments (2)
• Actions (3)
• Innervation (2)
• Blood supply (3)

Answer 3

• Large, posterior
• Attachments:
  
  • Adductor Part: Inferior rami of pubis/rami of ischium - linea aspera
  • Hamstring Part: Ischial tubersoity - adductor tubercle & medial supracondylar line
• Actions:
  
  • BOTH: Adduct
  • Adductor Part: Hip flexion
  • Hamstring Part: Hip extension
• Innervation:
  
  • Adductor Part: Obturator nerve
  • Hamsrting Part: Tibial - Sciatic nerve (L4-S3)
• Blood supply:
  
  • Profunda femoris (medial circumflex), obturator, inferior gluteal

Question 4

Adductor Longus & Brevis:

• Attachments (2)
• Actions (1)
• Innervation (1)
• Blood supply (2)

Answer 4

• Attachment:
  
  • Adductor Longus: Body of pubis - linea aspera
  • Adductor Brevis: Body of pubis/inferior pubic rami - linea aspera
• Action: Hip adduction
• Innervation: Obturator nerve
• Blood supply: Profunda femoris (medial circumflex), obturator

Question 5

Adductor Longus forms the…

Answer 5

• Medial border of the femoral triangle

Question 6

Obturator Externus:

• Attachments (1)
• Actions (2)
• Innervation (1)
• Blood supply (2)

Answer 6

• Attachments: Membrane of OF/adjacent bone - greater trochanter
• Actions: Hip: Adduction and lateral rotation
• Innervation: Obturator nerve
• Blood supply: Profunda femoris (medial circumflex) and obturator

Question 7

Gracilis:

• Attachments
• Actions: (2)
• Innervation: (1)
• Bloof supply (1)

Answer 7

• Attachment: Body of pubis and inferior rami of the pubis - medial surface of tibia
• Actions: Hip adduction and knee flexion
• *

Question 8

Why is the gracillis involved in actions of the hip and knee?

Answer 8

• Crosses hip and knee joints

Question 9

The pectineus forms the…

Answer 9

• Base of the femoral triangle

Question 10

Pectineus:

• Attachment
• Actions (2)
• Innervation (2)
• Bloof supply (2)

Answer 10

• Attachment: Pectineal line of pelvis (anterior) - pectineal line of femur (posterior)
• Action: Hip adduction and flexion
• Innervation: Femoral and obturator
• Blood supply: Femoral and obturator