COMPARTMENTS OF THE LEG

Question 1

Attachements and Action for: Tibialis Anterior

Answer 1

O: Lateral Proximal Tibia / Interosseous Membrane
I: 1 MT Base / 1st Cuneiform
A: Dorsiflexion / Inversion

Question 2

Attachements and Action for: Extensor Digitorum Longus

Answer 2

O: Anterior,Proximal Fibula / Interosseous Membrane
I: Base of distal 2-4 Phalanges
A: Dorsiflexion / Extension of 2-4 toes / Eversion

Question 3

Attachements and Action for: Extensor Hallucis Longus

Answer 3

O: Middle Fibula / Interosseous Membrane
I: Base of distal 1st Phanlanx
A: Extension of 1st toe

Question 4

Attachments and Action for: Peroneus Tertius

Answer 4

O: Anterior Distal Fibula
I: Base of 5th MT
A: Dorsiflexion / Eversion

Question 5

Define Retinacula.

Answer 5

Prevents the tendon from bowing as muscle contracts

Question 6

The tendon palpation order from medial to lateral of the anterior compartments of the leg are?

Answer 6

TA/EHL/EDL

Question 7

Between the tendons and the retinacula, there is a _______ which surrounds the tendon

Answer 7

Tendon sheath

Question 8

Attachments and Action for: Peroneus/Fibularis Longus

Answer 8

O: Lateral, Proximal Fibula
I: Base of 1st MT / 1st Cuneiform
A: Eversion

Question 9

Attachments and Action for: Peroneus/Fibularis Brevis

Answer 9

O: Lateral, 2/3rds of Fibula
I: Styloid Process (5th MT tuberosity)
A: Eversion

Question 10

Which muscle tendons forms a “stirr-up” on the plantar surface?

Answer 10

Tibialis Anterior and Peroneus Longus

Question 11

What landmark does Peroneus Longus and Peroneus Brevis pass behind?

Answer 11

Lateral Malleolus

Question 12

Attachments and Action for: Gastrocnemius

Answer 12

O: Medial/Lateral Femoral Condyles
I: Calcaneus
A: Plantar Flexion

Question 13

Attachments and Action for: Soleus

Answer 13

O: Proximal, Posterior Fibula / Soleal Line
I: Calcaneus
A: Plantar Flexion

Question 14

Which muscles are the “Triceps Surae”?

Answer 14

Gastrocnemius and Soleus

Question 15

Attachments and Action for: Plantaris

Answer 15

O: Supracondylar Ridge
I: Calcaneus
A: WEAK Plantar Flexion and Knee FLexion

Question 16

The Calcaneal Tendon is also known as?

Answer 16

Achilles Tendon

Question 17

Attachments and Action for: Tibialis Posterior

Answer 17

O: Posterior Tibia / Interosseous Membrane
I: Navicular Tuberosity and surrounding bones
A: Plantar Flexion and Inversion

Question 18

Attachments and Action for: Flexor Digitorum Longus

Answer 18

O: Posterior Tibia
I: Distal 2-5 Phalanges
A: PIP/DIP / MTP Flexion of 2-5 toes

Question 19

Attachments and Action for: Flexor Hallucis Longus

Answer 19

O: Posterior Fibula / Interosseous Membrane
I: 1st Distal Phalanx
A: 1st MTP / 1st IP Flexion

Question 20

What do the Posterior Compartments of the leg pass behind?

Answer 20

Medial Malleolus

Question 21

The Flexor Retinaculum forms a tunnel called?

Answer 21

Tarsal Tunnel

Question 22

The order of tendons from anterior to posterior if the Deep Posterior Compartments of the Leg are?

Answer 22

TA/FDL/FHL

Question 23

Attachments and Action for: Popliteus

Answer 23

O: Lateral Femoral Condyle
I: Posterior, Proximal surface of Tibia
A: Medial Rotation of knee - UNLOCKING Screw Home Mechanism

Question 24

Explain the ‘Screw-Home Mechanism’.

Answer 24

KNEE EXTENSION causes tibia to rotate LATERALLY, LOCKING the knee in a stable position

Question 25

Explain ‘unlocking’ the ‘Screw-Home Mechanism’.

Answer 25

At knee flexion, the Popliteus MEDIALLY rotates the Tibia to unlock the knee and allow flexion