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9 Cards in this Set
- Front
- Back
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Gastrocnemius |
O: by 2 heads -- medial is larger and more extensive medial head- Posterior surface of distal femur just superior to medial condyle lateral head- Upper posterolateral surface of lateral femoral condyle These two heads merge at inferior margin of popliteal fossa I: Posterior surface calcaneus via calcaneal tendon NS: Tibial nerve (S1, S2) Action: Foot plantar flexion, knee flexion |
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Soleus |
O: Upper 1/4 posterior surface of fibula and posterior aspect of head; Soleal line and middle 1/3 medial border of tibia -Tendinous arch formed between tibial and fibular attachments I: Posterior surface of calcaneus via calcaneal tendon NS: Tibial nerve (S1, S2) Action: Foot plantar flexion |
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Plantaris |
O: Inferior aspect lateral supracondylar line of femur and oblique popliteal ligament I: Medial border of calcaneal tendon at insertion to calcaneus NS: Tibial nerve (S1, S2) Action: Foot plantar flexion, knee flexion |
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Popliteus |
O: Lateral surface of lateral condyle of femur by cord like tendon that penetrates the fibrous membrane of the knee joint I: Posterior surface tibia, proximal to soleal line NS: Tibial nerve (L4, L5, S1) Action: Knee flexion, unlocks knee joint as it begins to flex (lateral rotation of femur on tibia when foot is fixed) |
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Flexor Hallucis Longus |
O: Inferior 2/3 posterior surface fibula and interosseous membrane I: Plantar surface of distal phalanx of great toe; Tendon travels through groove on posterior talus and runs underneath sustentaculum tali NS: Tibial nerve (S2, S3) Action: Great toe flexion, Assists with foot plantar flexion, foot inversion |
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Flexor Digitorum Longus |
O: Medial-posterior surface tibia, distal to soleal line (about middle 1/3) I: Base of distal phalanges, toes 2-3-4-5, plantar surface NS: Tibial nerve (S2, S3) Action: Toes 2-5 flexion, Assists with foot plantar flexion, foot inversion |
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Tibialis Posterior |
O: Posterior surface, tibia, upper 1/2, and interosseous membrane and upper posterior surface of fibula I: Tuberosity of Navicular bone with slip to medial cuneiform (may have slips to cuneiforms, cuboid, and plantar bases of metatarsals 2,3,4) NS: Tibial nerve (L4, L5) Action: Foot plantar flexion and inversion, supports medial arch of foot during walking |
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Popliteal Fossa Boundaries |
Superior/medial: Semimembranosus and semitendinosus Superior/lateral: Biceps Femoris Inferior/medial: Medial head of Gastrocnemius Inferior/lateral: Lateral head of Gastrocnemius, plantaris muscle Floor- Superior 1/3: popliteal surface of femur Middle 1/3: Posterior surface of knee joint capsule Inferior 1/3: Popliteus muscle |
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Popliteal Fossa Contents |
Popliteal artery with genicular branches (may divide into Anterior and Posterior tibial arteries) Popliteal vein Tibial nerve Common fibular/peroneal nerve Popliteal lymph nodes embedded in fat |
