Lecture 3: Leg and Foot Flashcards
weight bearing bone of the leg
tibia
largest sesamoid bone (developed from the
quadriceps femoris muscle tendon in front of the knee
joint)
patella
non- weight bearing bone of the leg
fibula
Deep Fascia is absent over the subcutaneous part of _____
medial surface of tibia;
what are the muscles in the anterior compartment of the leg?
Tibialis anterior (most prominent) Extensor hallucis longus (extensor of big foot) Extensor digitorum longus Peroneus tertius
Blood supply of anterior compartment of the leg
Anterior tibial artery (brand of popliteal
artery)
Nerve Supply of anterior compartment of leg
Deep peroneal nerve
action of the anterior compartment of the leg
Extension/ dorsiflexion
biggest compartment of the leg
posterior compartment
Superficial Muscles of the posterior compartment of the leg.
Gastrocnemius
Soleus (biggest muscle of leg)
Plantaris/ “Freshman’s nerve” (mistaken as nerve due to its long tendon
Deep Muscles of the posterior compartment of the leg
Popliteus
Flexor digitorum longus
Flexor hallucis longus
Tibialis posterior
Blood supply of posterior compartment of the leg
Posteriortibial artery
nerve supply of posterior compartment of the leg
Tibial nerve
action of posterior compartment of the leg
Plantar flexion
Muscles of the lateral compartment of the leg
Peroneus longus/ Fibularis longus
Peroneus brevis/ Fibularis brevis
nerve supply of the lateral compartment of the leg
Superficial peroneal nerve
action of the lateral compartment of the leg
Eversion
what are the derivatives of deep fascia in the leg?
Interosseous membrane
Ant. Fascial septum
Post. Fascial septum
Deep transverse fascia
deep fascia between fibula and tibia
Interosseous membrane
deep fascia that divides ant. and lat.
compartments
Ant. Fascial septum
deep fascia that divides ant. and lat.
compartments
Ant. Fascial septum
deep fascia that divides post. deep and post.
superficial compartments
Deep transverse fascia
The impingement of the neurovascular bundle because fascial compartment prevents outward swelling of muscle; may cause ischemia; most common in lower extremities.
Compartment syndrome
incisions made in the fascia to release pressure and treat compartment syndrome (posteriomedial and anteriolateral incision)
Fasciotomy
dorsum muscles of the foot
Extensor digitorum brevis
Extensor hallucis brevis
1st layer in the sole muscles
Abd. hallucis
Flexor digitorum brevis
Abd. digiti minimi
2nd layer in the sole muscles
Quadratus plantae
Lumbricals – 2nd to 5th digits
Flexor hallucis longus tendon
Flexor digitorum longus tendon