Ankle - Ankle Medial Malleolus Tibia(distal Lateral...

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Ankle - Medial Malleolus – Tibia (distal) - Lateral Malleolus – Fibula (distal) Foot/Ankle - 26 Bones o 7 tarsals, 5 metatarsals, 14 phalanges o Tarsals: Talus Head, neck, and dome Talocrural joint or ankle mortice superior with tibia Subtalar joint, plantar surface of talus w/ calcaneous Calcaneous Lateral calcaneal process Medial calcaneal process o Medial important due to attachment of plantar aponeurosis or plantar fascia Medial sustenaculum tali helps to support talus o Groove on plantar surface for flexor hallucis longus tendon Lateral aspect has peroneal tubercle (palpate 1” below) Navicular Navicular tuberosity Palpate 1” inferior anterior to medial malleolus 1” in front of sustenaculum Cuboid Groove for peroneal longest muscle Metatarsal – body/paste meael # 1-5 Tarsometatarce joints Articulate w/ phalanges Metatarsealphalangeal (MTP) Cuneiforms (medial, intermediate, lateral) - 1 st metatarsal sesimoia bone (lateral) o Located in tendon of flexor hallucis brevis Phalanges - Each foot has 14 - Very small - Hallux (big toe) only two - Have base, body, and head - Inter phalangeal joint - Proximal IP joint (PIP) - Distal interphalangeal joint (DIP) Arches of foot
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- Longitudinal - Medial and lateral - Thicker, resilient, more mobile - Transverse arch - Metatarsal arch Weight Bearing on Foot - Posterior calcaneous - 5 metatarsal head at ball of foot o Most on 1 st and 5 th metatarsal o Points where longitudinal arch ends Muscles of plantar aspect of foot - 1 st Layer (superficial) - Abductor Hallucis (great toe) o Origin: medial tuberosity of calcaneous o Insertion: base of proximal phalanx of great toe o Action: abducts the great toe - Flexor Digitorum Brevis (mid) o Origin: medial calcaneous tuberosity o Insertion: middle phalanx of lateral 4 toes o Action: flexes lateral toes - Abductor Digiti Minimi (son toe) o Origin: lateral calcaneous tuberosity o
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