Medial Compartment of the Thigh + Hip Ligaments

Question 1

Adductor Longus

Answer 1

O: Pubic Body to Pubic Crest
I: Middle Linea Aspera
A: Adducts Thigh
Inn: Ant. Obturator N

Question 2

Adductor Brevis

Answer 2

O: Body and Inferior Pubic Ramus
I: Linea Aspera and Pectineal Line
A: Adduct Thigh
Inn: Ant. Obturator N

Question 3

Adductor Magnus (Hamstring)

Answer 3

O: Ischial Tuberosity
I: Adductor Tubercle
A: Extends Thigh
Inn: Tibial Portion of Sciatic N

Question 4

Adductor Magnus (Adductor)

Answer 4

O: (IRRI) Inferior Ramus of Pubis and Ramus of Ischium
I: Linea Aspera and Medial Supracondylar line
A: Adduction and Flexion of Thigh
Inn: Posterior Obturator N

Question 5

Gracilis

Answer 5

O: Body and Inferior Ramus of Pubis
I: Superior Medial Surface of Tibia (Pes Anserinus)
A: Adducts thigh and flexes Knee & med rot leg
Inn: Ant Obturator N

Question 6

Obturator Externus

Answer 6

O: Ant Obturator Foramen and Membrane
I: Greater Trochanter of Femur
A: Lat Rot thigh, and stabilize hip
Inn: Post. Obturator N

Question 7

What are the 3 muscles of the Pes Anserinus? What do they do?

Answer 7

Gracilis, Sartorius and Semitendinosus.

They help stabilize the medial aspect and extend the knee

Question 8

What are the boundaries of the Adductor Canal?

Contents?

Answer 8

Posteriorly - Adductor Longus & Magnus
Anterior/Lateral - Vastus medialis
Superficial/Medial - Sartorius
Contents:
Femoral N, Saphenous N, Femoral A, Femoral V

Question 9

What two muscles are innervated by the Posterior Obturator Nerve?

Answer 9

Obturator Externus and Adductor Head of Adductor Magnus

Question 10

What makes up the LUMBAR plexus and what are the major branches?

Answer 10

• Anterior Rami of L1 - L4

- Branches: Femoral N, Obturator N, Lumbosacral Trunk

Question 11

SIPPS

Answer 11

• Superior Gluteal N/ N to QF & Inferior Gemelus
• Inferior Gluteal N/ N to Obturator Int and Superior Gemelus
• Posterior Cutaneous N of Thigh
• Pudendal
• Sciatic

Question 12

What are the ligaments of the hip?

Answer 12

• Iliofemoral Lig
• Pubofemoral Lig
• Ischiofemoral Lig
• Lumbar-Sacro Lig

Question 13

Describe the Iliofemoral Ligament

Answer 13

• AIIS and acetabular rim to intertrochanteric line

- Prevents hyperextension of hip and limits abduction

Question 14

Describe the Pubofemoral Ligament

Answer 14

Obturator crest of pubic bone to intertrochanteric line

- Prevents hyper extension of hip and limits abduction

Question 15

Describe the ischiofemoral ligament

Answer 15

ischia-acetabular rim to neck of femur

-Prevents hyper extension

Question 16

Describe Lumbar Sacro ligament

Answer 16

Sacrum to Os Coxae

- Acts like suspension bridge, allows some movement but prevents sacrum from slamming down

Question 17

For hip replacement where is the head of the femur accessed?

Answer 17

between TFL and Sartoius