Lecture 22 Outline of Last Lecture I. The Foot II. Bones III. Landmarks IV. Joints of the Foot V. Ligaments of the Ankle VI. Injuries VII. Biomechanics of the Foot VIII. Foot Arches IX. Plantar Fascia X. Movements Outline of Current Lecture I. Walking and Running Issues II. Lower Leg Compartments III. Muscles Current Lecture K. Walking and Running Issues1. Walkinga. one foot is always in contact with ground; point where both feet are in contact with ground2. Running HPER 205 1st Edition These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best !used as a supplement to your own notes, not as a substitute. !a. Point when neither foot is i contact with ground; never both feet in contact at same time3. Problems arise when:a. foot is too rigid and does not pronate adequatelyb. foot remains in pronation past midstanceL. Lower Leg Compartments1. Lower leg - divided into 4 compartmentsa. Anterior compartment- dorsiflexion, toe extensionb. Lateral compartment- eversionc. Superficial Posterior compartment- plantarflexiond. Deep Posterior compartment- plantarflexion, inversion, toe flexionM. Muscles1. Tibialis Anterior (anterior comp.)a. Origin: tibia lateral condyleb. Insertion: base 1st metatarsalc. Actions: dorsiflexion, inversion2. Extensor Digitorum Longus (anterior comp.)a Origin: lateral tibial condyle and the fibulab. Insertion: phalangesc. Actions: extends toes and dorsiflexion3. Extensor Hallucis Longus (anterior comp.)a. Origin: fibulab. Insertion: 1st phalangec. Actions: Extend big toe, dorsiflexion, and supination4. Peroneus Longus (lateral comp.)a. Origin: fibulab. Insertion:- lateral side of medial cuneiform- base of 1st metatarsalc. Actions: eversion and plantar flexion5. Peroneus Brevis (lateral comp.)a. Origin: fibulab. Insertion: base of 5th metatarsalc. Actions: eversion and plantar flexion6. Gastrocnemius (superficial posterior comp.)a. Origin: condyle of femurb. Insertion: achilles tendonc. Actions: plantar flexion and flexion of knee7. Soleus (superficial posterior comp.)a. Origin: tibia and fibulab. Insertion: achilles tendon-calcaneusc. Actions: plantar flexion8. Plantaris a. Origin: femurb. Insertion: calcaneusc. Actions: plantar flexion and assists in knee flexion9. Flexor Digitorum Longus (posterior comp.)a. Origin: tibiaAchilles tendon - largest tendon in bodyb. Insertion: distal phalangesc. Actions: flexes toes, plantar flexion, and inversion10. Flexor Hallucis Longus (posterior comp.)a. Origin: fibulab. Insertion: distal phalange of big toec. Actions: flexes big toe. plantar flexion, and inversion11. Tibialis Posterior (posterior comp.)a. Origin: tibia and fibulab. Insertion: tarsals and metatarsalsc. Actions: plantar flexion and
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