COMPARTMENTS OF THE LEG Flashcards
Attachements and Action for: Tibialis Anterior
O: Lateral Proximal Tibia / Interosseous Membrane
I: 1 MT Base / 1st Cuneiform
A: Dorsiflexion / Inversion
Attachements and Action for: Extensor Digitorum Longus
O: Anterior,Proximal Fibula / Interosseous Membrane
I: Base of distal 2-4 Phalanges
A: Dorsiflexion / Extension of 2-4 toes / Eversion
Attachements and Action for: Extensor Hallucis Longus
O: Middle Fibula / Interosseous Membrane
I: Base of distal 1st Phanlanx
A: Extension of 1st toe
Attachments and Action for: Peroneus Tertius
O: Anterior Distal Fibula
I: Base of 5th MT
A: Dorsiflexion / Eversion
Define Retinacula.
Prevents the tendon from bowing as muscle contracts
The tendon palpation order from medial to lateral of the anterior compartments of the leg are?
TA/EHL/EDL
Between the tendons and the retinacula, there is a _______ which surrounds the tendon
Tendon sheath
Attachments and Action for: Peroneus/Fibularis Longus
O: Lateral, Proximal Fibula
I: Base of 1st MT / 1st Cuneiform
A: Eversion
Attachments and Action for: Peroneus/Fibularis Brevis
O: Lateral, 2/3rds of Fibula
I: Styloid Process (5th MT tuberosity)
A: Eversion
Which muscle tendons forms a “stirr-up” on the plantar surface?
Tibialis Anterior and Peroneus Longus
What landmark does Peroneus Longus and Peroneus Brevis pass behind?
Lateral Malleolus
Attachments and Action for: Gastrocnemius
O: Medial/Lateral Femoral Condyles
I: Calcaneus
A: Plantar Flexion
Attachments and Action for: Soleus
O: Proximal, Posterior Fibula / Soleal Line
I: Calcaneus
A: Plantar Flexion
Which muscles are the “Triceps Surae”?
Gastrocnemius and Soleus
Attachments and Action for: Plantaris
O: Supracondylar Ridge
I: Calcaneus
A: WEAK Plantar Flexion and Knee FLexion
The Calcaneal Tendon is also known as?
Achilles Tendon
Attachments and Action for: Tibialis Posterior
O: Posterior Tibia / Interosseous Membrane
I: Navicular Tuberosity and surrounding bones
A: Plantar Flexion and Inversion
Attachments and Action for: Flexor Digitorum Longus
O: Posterior Tibia
I: Distal 2-5 Phalanges
A: PIP/DIP / MTP Flexion of 2-5 toes
Attachments and Action for: Flexor Hallucis Longus
O: Posterior Fibula / Interosseous Membrane
I: 1st Distal Phalanx
A: 1st MTP / 1st IP Flexion
What do the Posterior Compartments of the leg pass behind?
Medial Malleolus
The Flexor Retinaculum forms a tunnel called?
Tarsal Tunnel
The order of tendons from anterior to posterior if the Deep Posterior Compartments of the Leg are?
TA/FDL/FHL
Attachments and Action for: Popliteus
O: Lateral Femoral Condyle
I: Posterior, Proximal surface of Tibia
A: Medial Rotation of knee - UNLOCKING Screw Home Mechanism
Explain the ‘Screw-Home Mechanism’.
KNEE EXTENSION causes tibia to rotate LATERALLY, LOCKING the knee in a stable position
Explain ‘unlocking’ the ‘Screw-Home Mechanism’.
At knee flexion, the Popliteus MEDIALLY rotates the Tibia to unlock the knee and allow flexion
