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Muscles of Knee

QuestionAnswer
Rectus Femoris (Quadriceps Femoris) O: AIIS I: Tibial tuberosity A: Knee extension, hip flexion I: Femoral nerve
Vastus lateralis (Quadriceps Femoris) O: Linea aspera I: Tibial tuberosity A: Knee extension I: Femoral nerve
Vastus intermedius (Quadriceps Femoris) O: Anterior, lateral femur I: Tibial tuberosity A: Knee extension I: Femoral Nerve
Vastus medialis (Quadriceps Femoris) O: Linea aspera I: Tibial tuberosity A: Knee extension I: Femoral Nerve
Popliteus O: Lateral condyle of femur I: Posterior medial condyle of tibia A: Initiates knee flexion- "unlocks" knee from fully extended position I: Tibial nerve
Plantaris O: Distal, lateral femur I: Posterior calcaneous A: Ankle plantarflexion, assists with knee flexion I: Tibial nerve
Gastrocnemius O: Posterior medial and lateral femoral condyles I: Posterior calcaneous A: Knee flexion, ankle plantarflexion I: Tibial nerve
Tibialis Anterior O: Lateral tibia and interosseus membrane I: Medial cuneiform and 1st MTP A: Ankle inversion and dorsiflexion I: Deep peroneal nerve
Extensor Hallucis Longus O: Fibula and interosseus membrane I: Distal phalanx of 1st toe A: 1st toe extension; assists in ankle inversion and DF I: Deep peroneal nerve
Extensor Digitorum longus O: Fibula, tibia, and interosseus membrane I: Distal phalanc of toes 2-5 A: Extension of toes 2-5; assists in ankle DF I: Deep peroneal nerve
Peroneus (Fibularis) Longus O: Head of fibula and proximal lateral fibula I: Base of 1st MT and medial cuneiform A: Ankle eversion; assists in PF I: Superficial peroneal nerve
Perioneus (Fibularis) Brevis O: Distal 2/3 of lateral fibula I: Tuberosity of 5th MT A: Ankle eversion; assits in PF I: Superficial peroneal nerve
Peroneus (Fibularis) Tertius A: Ankle eversion, assists in DF I: Deep peroneal nerve
Soleus O: Posterior tibia and fibula I: Posterior calcaneus A: Ankle plantarflexion I: Tibial nerve
Gastrocnemius O: Posterior medial and lateral femoral condyles I: Posterior calcaneus A: Knee flexion, ankle PF I: Tibial nerve
Tibialis Posterior O: Interosseus membrane and adjacent tibia and fibula I: Tarsal bones (except talus) metatarsals 2-4 A: Ankle plantarflexion, inversion I: Tibial nerve
Flexor Hallus Longus O: Posterior fibula I: Distal phalanx of 1st toe A: Flex the 1st MTP and IP joints; assits in ankle inversion and PF I: Tibial nerve
Flexor Digitorum Longus O: Posterior tibia I: Distal phalanges of toes 2-5 A: Flexion of MTP and IP joints of toes 2-5; assists in ankle inversion and PF I: Tibial nerve
Created by: user-2052658
 

 



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