Lecture 6, Leg
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Courtney Takahashi Anatomy, Leg 17 May 2006 Identify Tibia • Lateral condyle • Medial condyle • Tibial tuberosity • Anterior Border • Medial malleolus • Nutrient foramen Fibula • Head • Neck • Lateral malleolus
What is the main action of the anterior compartment? Main nerve? Main arterial supply? Tibialis Anterior - Attachments? - Actions? Extensor digitorum longus - Attachments? - Action? Fibularis (Peroneus) Tertius - Attachment? - Action? Extensor Hallucis Longus - Attachment? - Action? Deep fibular nerve Anterior tibial artery Lateral compartment - Action? - Main nerve? Fibularis (peroneus) longus - Attachment? - Action? Fibularis (peroneus) brevis - Attachment? - Action? Superficial fibular nerve Posterior compartment - Nerve? - Action? - Blood supply? Gastrocnemius - Actions? Soleus - Action? Plantaris - Action? Popliteus Action? Flexor Digitorum Longus - Action? Flexor hallucis longus - Action? Tibialis Posterior - Action? Tibial nerve Posterior tibial artery
Action: Dorsiflexor / Extensor compartment Nerve: Deep fibular nerve Artery: Anterior tibial artery Attachment: Superior part of the tibia to medial side of food Action: Dorsiflexor of ankle and invertor of foot Attachment: Attaches to fibular and runs to lateral 4 toes Action: Extends lateral four digits and dorsiflexes ankle Attachment: Proximal part is fused with extensor digitorum longus but tendon attaches to the 5th metatarsal Action: Dorsiflexes the ankle, aids in eversion of foot Attachment: Fibula to big toe Action: Extends great toe and dorsiflexes ankle
Action: Everts foot Nerve: Superficial fibular (peroneal) nerve Attachment: Fibular to sole of foot (1st metatarsal) Action: Helps to steady leg when standing on one foot, everts foot and weakly plantar flexes ankle Attachment: Fibula to 5th metatarsal bone Action: everts food and weakly plantar flexes ankle Nerve: Tibial nerve Action: Flexor muscles Blood: Posterior tibial artery Actions: Rapid movement during running and jumping, plantarflexes ankle when knee extended, raises heel during walking, flexes hip at knee joint Action: Plantarflexes the ankle independent of knee position and steadies leg on foot Weakly assists gastrocnemius in plantar flexing ankle and flexing knee Action: Flexor of knee joint Flexes lateral four digits & plantarflexes ankle Action: Flexes great toe at all joints, weakly plantarflexes ankle Plantarflexes ankle and inverts food
What is the main action of the anterior compartment? Main nerve? Main arterial supply? Tibialis Anterior - Attachments? - Actions? Extensor digitorum longus - Attachments? - Action? Fibularis (Peroneus) Tertius - Attachment? - Action? Extensor Hallucis Longus - Attachment? - Action? Deep fibular nerve Anterior tibial artery Lateral compartment - Action? - Main nerve? Fibularis (peroneus) longus - Attachment? - Action? Fibularis (peroneus) brevis - Attachment? - Action? Superficial fibular nerve Posterior compartment - Nerve? - Action? - Blood supply? Gastrocnemius - Actions? Soleus - Action? Plantaris - Action? Popliteus Action? Flexor Digitorum Longus - Action? Flexor hallucis longus - Action? Tibialis Posterior - Action? Tibial nerve Posterior tibial artery
Action: Dorsiflexor / Extensor compartment Nerve: Deep fibular nerve Artery: Anterior tibial artery Attachment: Superior part of the tibia to medial side of food Action: Dorsiflexor of ankle and invertor of foot Attachment: Attaches to fibular and runs to lateral 4 toes Action: Extends lateral four digits and dorsiflexes ankle Attachment: Proximal part is fused with extensor digitorum longus but tendon attaches to the 5th metatarsal Action: Dorsiflexes the ankle, aids in eversion of foot Attachment: Fibula to big toe Action: Extends great toe and dorsiflexes ankle
Action: Everts foot Nerve: Superficial fibular (peroneal) nerve Attachment: Fibular to sole of foot (1st metatarsal) Action: Helps to steady leg when standing on one foot, everts foot and weakly plantar flexes ankle Attachment: Fibula to 5th metatarsal bone Action: everts food and weakly plantar flexes ankle Nerve: Tibial nerve Action: Flexor muscles Blood: Posterior tibial artery Actions: Rapid movement during running and jumping, plantarflexes ankle when knee extended, raises heel during walking, flexes hip at knee joint Action: Plantarflexes the ankle independent of knee position and steadies leg on foot Weakly assists gastrocnemius in plantar flexing ankle and flexing knee Action: Flexor of knee joint Flexes lateral four digits & plantarflexes ankle Action: Flexes great toe at all joints, weakly plantarflexes ankle Plantarflexes ankle and inverts food
