MM Of Hip/thigh

Question 1

What is the Mnemonic for the muscles of the hip/thigh?

Answer 1

Sarah’s Pectineus has Very Limited Mobility Inferiorly, her Right Foot AGgrevates it
(Sartorious, Pectineus, Vastus Lateralis, Medialis, Intermedialis, Rectus Femoris, Articularis Genu)

Her ADDUCORS May Be eLONGating her Groin
( ADDUCTOR: Magnus, Brevis, Longus, Gracillis )

Both Flexion and adduction Stimulate This Small Muscle
(Biceps Femoris, Semitendinosus, Semimembranosus)

Question 2

What nerves innervate this region of the body?

Answer 2

1.) Femoral
2.) Obturator
3.) Sciatic (Common peroneal portion, Tibial portion)

Question 3

What are the facial compartments of the thigh?

Answer 3

1.) Anterior ( quads)
2.) Medial ( adductors)
3.) posterior ( hamstrings)

Question 4

What nerves innervate the anterior fascial compartment of the thigh?

Answer 4

Obturator
Femoral

Question 5

What nerves innervate the medial fascial compartment of the thigh?

Answer 5

Obturator,
Sciatic (tibial portion)

Question 6

What nerves innervate the posterior fascial compartment of the thigh?

Answer 6

Sciatic ( Tibial and common peroneal portion)

Question 7

What muscles make up the anterior fascial compartment of the thigh?

Answer 7

1.) Sartorious
2.) Petineus
3.) Vastus lateralis
4.) Vastusmedialis
5.) Vastus intermedialis
6.) Rectus Femoris
7.) Articularis Genu

Question 8

What 4 muscles of the anterior compartment make up the Quadriceps?

Answer 8

1.) Vastus lateralis
2.) Vastus Medialis
3.) Vastus Intermedialis
4.) Rectus Femoris

Question 9

What muscles make up the medial fascial compartment of the thigh?

Answer 9

1.) Adductor longus
2.) adductor Brevis
3.) Adductor Magnus
4.) Gracillis

Question 10

What muscles make up the posterior fascial compartment of the thigh?

Answer 10

1.) Biceps femoris
2.) Semitendinosus
3.) Semimembranosus

Question 11

What are the origins and insertions for the anterior fascial compartment of the thigh?

Answer 11

1.) Sartorious
O: ASIS
I: Pes anserine

2.) Pectineus
O: Pectineal line of superior ramus of pubis
I: Pectineal line of femur

3.) Vastus Lateralis
O: Intertrochanteric line+
Greater trochanter ( inferior part)+
Linea Aspera (lateral lip)+
Lateral dep fascial septum
I: Tibial Tuberosity

4.) Vastus Medialis
O: Intetrochanteric line+
Linea aspera (medial lip)+
Medial deep fascial septum
I: Tibial tuberosity

5.) Vastus intermedialis
O: Femoral shaft (anterior and lateral surface)
I: Tibial Tuberosity

6.) Rectus Femoris
O: straight head= AIIS
Reflected head=Ilium (above acetabulum)
I: Tibial tuberosity

7.) Articularis Genu
O: Femur ( inferior 1/4 of anterior surface)
I: Joint capsule of knee ( superior part)

Question 12

There are 3 muscles of the anterior fascial compartment that cross a hip joint, what are they?

Answer 12

1.) Sartorious
2.) Pectineus
3.) Rectus Femoris

Question 13

This muscle is responsible for pulling the articular capsule up during knee extension to avoid pinching under the patella…..

Answer 13

Articularis Genu

Question 14

All of the muscles of the anterior thigh compartment do extension of the knee EXCEPT for one muscle that does knee flexion and assists in medial rotation. What is this muscle?

Answer 14

Sartorious

Question 15

4 muscles of the anterior thigh insert together on the tibial tuberosity (quads).
Where do the other 3 insert?

Answer 15

1.) sartorious= pes anserine
2.) pectineus= Pectineal line of femur
3.) Articularis genu= joint capsule (superior part)

Question 16

What two muscles of the anterior thigh have partial origins on the linea aspera?

Answer 16

1.) Vastus lateralis
2.) Vastus medialis

Question 17

What are the origins and insertions of the muscles of the medial fascial compartment of the thigh?

Answer 17

1.) adductor Magnus
O: Inferior ramus of pubis+
Ramus of ischium+
Ischial tuberosity
I: Adductor portion= Linea aspera + medial supracondylar ridge of femur
Hamstring portion= Aductor tubercle of femur

2.) adductor brevis
O: Body and inferior ramus of pubis
I: linea aspera ( middle1/3 of medial lip)

3.) adductor longus
O: Body of pubis
I: linea aspera ( middle 1/3 of medial lip)

4.) Gracillis
O: ramus of ischium + body and inferior ramus of pubis
I: pes anserine

Question 18

What is the only muscle of the medial thigh compartment to have an action at the knee?

Answer 18

Gracillis ( assists in flexion and medial rotation)

Question 19

1.) With the exception of 1 muscle of the medial thigh compartment, what is the only action all 4 muscles share at the hip?
2.) What muscle includes an additional action?
3.) what is that action?

Answer 19

1.) Adduction
2.) adductor Magnus
3.) the hamstring portion does extension at the hip

Question 20

Adductor Magnus has two insertion points. What are they and what actions to they provide?

Answer 20

1.) Adductor portion= Linea aspera+ medial supracondylar ridge of femur = hip adduction
2.) hamstring portion= adductor tubercle of femur= hip extension

Question 21

3 of the medial thigh muscles have an origin or partial origin off of what structure?
Bonus: What muscles are these?

Answer 21

Body of the pubis
Bonus: adductor brevis + adductor longus + Gracillis

Question 22

What 2 muscles of the medial thigh compartment have a shared origin off the ramus of the pubis?

Answer 22

1.) adductor Magnus
2.) Gracillis

Question 23

What 3 muscles of the medial thigh have a partial origin off the inferior ramus of the pubis?

Answer 23

1.) adductor Magnus
2.) adductor brevis
3.) Gracillis

Question 24

What 3 muscles of the medial thigh have an insertion or partial insertion onto the linea aspera?

Answer 24

1.) adductor Magnus ( adductor portion)
2.) adductor brevis
3.)adductor longus

Question 25

What is the only muscle of the medial thigh compartment to have an insertion on the pes anserine?

Answer 25

Gracillis

Question 26

What is the only muscle of the medial thigh compartment to have an insertion on the supracondylar ridge of the femur and the adductor tubercle?

Answer 26

Adductor Magnus
Supracondylar ridge= adductor portion
Hamstring portion= adductor tubercle

Question 27

What are the origins and insertions for the posterior compartment of the thigh?

Answer 27

1.) Biceps femoris
O: long head= Ischial tuberosity ( with Semitendinosus tendon)+
Sacrotuberous ligament
Short head= Linea aspera ( lateral lip) +
Supracondylar ridge of femur ( proximal 2/3)
I: head of fibula

2.) Semitendinosus
O: Ischial tuberosity ( shard origin with Biceps fem)
I: Pes anserine

3.) Semimembranosus
O: Ischial tuberosity ( lateral to shared origin of BF and ST)
I: groove for Semimembranosus ( on medial condyle of tibia)

Question 28

What is the only muscle of the posterior compartment to insert on the pes anserine?

Answer 28

Semitendinosus

Question 29

What two muscles of the posterior thigh have a shared origin?

Answer 29

1.) Biceps femoris
2.) Semitendinosus

Question 30

All 3 of the muscles of the posterior thigh cross the Knee AND the Hip.
1.) what do they all have in common at the knee?
2.) what 2 muscles do medial rotation? What 1 does lateral rotation at the knee?
3.) what do these muscles have in common at the hip?
4.) what 2 muscles assist with medial rotation at the hip? And 2 assists with lateral?

Answer 30

1.) Knee flexion + rotation
2.) Semitendinosus + Semimembranosus ( med rot) Biceps femoris ( lat rot)
3.) Extension + rotation
4.) Semitendinosus + Semimembranosus ( med rot) biceps femoris (lat rot)