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The Foot •Bones •Joint •Muscles •Artery & Nerves Interphalangeal joints Metatarsophalangeal joints Tarsometatarsal joints (Attachment of the fibularis brevis) Arches of the Foot • Arches enable the foot to support the weight of the body Ligament and muscle support Ligament and muscle support Joint 1. 2. 3. 4. Deep transverse intermetatarsal ligament Flexor tendon sheaths Plantar ligament of the MP joints MP joint Flexor tendon sheath MP joint Plantar ligament of the MP joints Plantar aponeurosis insersion Achilles Tendon & Plantar Fascia The Foot •Bones •Joint •Muscles •Artery & Nerves Muscles • Extensors – long • Extersor hallucis longus • Extersor digitorum longus – Short • Extersor digitorum brevis Muscles • Flexors – long • Flexor hallucis longus • Flexor digitorum longus • Protection • Mechanical effect (increases its moment arm) Small plantar muscles 1. 2. 3. 4. Interosseous muscles short muscles in the middle of the foot short muscles for the 1st phalanx short muscles for the 5th phalanx Interosseous muscles Small plantar muscles 1. 2. 3. 4. Interosseous muscles short muscles for the 1st phalanx short muscles for the 5th phalanx short muscles in the middle of the foot Adductor hallucis Flexor hallucis brevis insertions Small plantar muscles 1. 2. 3. 4. Interosseous muscles short muscles for the 1st phalanx short muscles for the 5th phalanx short muscles in the middle of the foot Small plantar muscles 1. 2. 3. 4. Interosseous muscles short muscles for the 1st phalanx short muscles for the 5th phalanx short muscles in the middle of the foot
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