DOC PREVIEW
WVU ATTR 219 - Lower Leg
Type Lecture Note
Pages 4

This preview shows page 1 out of 4 pages.

Save
View full document
View full document
Premium Document
Do you want full access? Go Premium and unlock all 4 pages.
Access to all documents
Download any document
Ad free experience
Premium Document
Do you want full access? Go Premium and unlock all 4 pages.
Access to all documents
Download any document
Ad free experience

Unformatted text preview:

ATTR 219 1st Edition Lecture 6Fibula-distal end is lateral malleolus-shaft is twisted into a triangular shape-bound to the tibia by tibiofibular syndesmosis -articulates with lateral surface to talus in ankle mortice-bears little weight, if anyMuscles of Lower Leg-divided into compartments: anterior, lateral or peroneal, deep and superficial posteriorAnterior Compartment-action-dorsiflex foot and extend toes-innervation by deep peroneal nerve-nerve accompanied by anterior tibial artery-terminal brach of popliteal- Tibialis Anterior-Origin: lateral condyle, upper 2/3 of lateral tibia, interosseous membrane and deep fascia-Inserts: medial cuneiform, base of 1st metatarsal -Action: dorsiflexes and inverts foot (do this to see anterior tibilus)- Extensor HallucisLongus-Origin: mid half of anterior fibula; adjacent interosseous membrane-Inserts: base of distal phalanx of 1st toe-Action: extends 1st toe and dorsiflexion of foot- Extensor DigitorumLongus-Origin: lateral condyle of tibia, upper ¾ of anterior fibula, interosseousmembrane and deep fascia-Inserts: base of middle and distal phalanges of lateral 4 toes; dorsiflexion and everts foot- Peroneus Tertius (also known as fibularistertius)These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.-Origin: lower 1/3 of anterior fibula and adjacent interosseous membrane -Inserts: base of 5th metatarsal (styloid process)-Action: dorsiflexion and everts footLateral Compartment-contains two muscles that produce foot eversion and plantar flexion-innervated by superficial peroneal nerve- Peroneus Longus-Origin: head and upper 2/3 of lateral fibula-Inserts: medial cuneiform and base of 1st metatarsal-Action: plantar flexion and everts foot, tendon of muscle runs in plantar groove of cuboid- Peroneus Brevis-Origin: lower 2/3 of lateral fibula -Inserts: base of 5th metatarsal -Action: plantar flexies, everts foot, tendon runs above peroneal tubercle and peroneus longus runs belowPosterior Compartments-divided into superficial and deep group-primary action is plantar flexion of foot, ankle and toes-innervation by tibial nerve-posterior tibial artery is the blood supply*Superficial Group*:- Gastroc (2 heads)-Origin: (1) medial head- medial condyle and adjacent femur(2) lateral head- lateral condyle and adjacent femur-Inserts: Achilles tendon to posterior calcaneus -Action: plantar flexes the foot and ankle; flexes the lower leg- Soleus-Origin: head and upper 1/3 of posterior fibula, soleal line and middle 1/3 of medial border of tibia-Inserts:Achilles tendon to posterior calcaneus-Action: plantar flexes the foot and ankle- Plantaris-Origin: lateral supracondylar line of femur-Inserts: Achilles tendon-Action: weak assistant in plantar flexion of foot and ankleDeep Group- Popliteus-Origin: lateral condyle of femur-Inserts: posterior tibia above soleal line-Action: internal rotation of tibia on femur; flexes lower leg- Flexor HallucisLongus-Origin: lower 2/3 of posterior fibula and adjacent interosseous membrane-Inserts: base of distal phalanx of 1st toe-Action: flexes 1st toe, assists in plantar flexion and inversion of foot/ankle-artery: peroneal- Flexor DigitorumLongus-Origin: posterior tibial below soleal line-Inserts: base of distal phalanx of lateral 4 toes-Action: flexes lateral 4 toes; assists in plantar flexion and inversion of foot and ankle-Artery: posterior tibial- Tibiolus Posterior-Origin: posterior surface of interosseous membrane, lateral/posterior tibia below soleal line upper ¾ of medial fibula-Inserts: navicular tuberosity sustentaculumtali, cuboid, 3 cuneiform, base of 2-4 metatarsals-Artery: peronealStructures of Posterior Lower Leg-Order of structures passing posterior/inferior to medial malleolus - Tibialis Posterior (TOM)- Flexor Digitorum (DICK)- Posterior Tibial Artery (AND)- Tibial Nerve (NERVOUS)- Flexor Hallucis (HARRY)Nerves- Tibial nerve- largest terminal branch of the sciatic-enters between two heads of gastro and runs adjacent to posterior tibial artery-splits and becomes medial and lateral plantar artery- Common peroneal is smaller terminal branch of sciatic-winds around the neck of fibula -between fibula and peroneus longus will divide into two terminal branches-superficial and deep peroneal nerve- Superficial peroneal nerve: innervates anterior compartment-lies anterior to interosseous membrane-adjacent to anterior tibial artery-ends on dorsum of foot between 1st and 2nd toesArteries- Anterior Tibial Artery:-anterior to interosseous membrane and adjacent to deep peroneal nerve-continuous on dorsum as dorsalis depus artery- Posterior Tibial Artery:-accompanies tibial nerve in posterior compartments-splits under flexor retinaculum into medial and lateral plantar artery-can be palpated between medial malleolus and calcaneus - Peroneal Artery-larger branch of posterior tibial artery-deep to flexor halluces ligament and supplies peroneal


View Full Document

WVU ATTR 219 - Lower Leg

Type: Lecture Note
Pages: 4
Download Lower Leg
Our administrator received your request to download this document. We will send you the file to your email shortly.
Loading Unlocking...
Login

Join to view Lower Leg and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Lower Leg 2 2 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?