Anatomy of the leg and foot Flashcards
List the functions of the foot
Support body weight
Stability/standing
Locomotion/propulsion (lever)
Shock absorption
Name the two bones in the leg
Tibia
Fibular
What is between the tibia and fibula?
Interosseous membrane
Name the joints between the tibia and fibula
Superior tibiofibular joint
Inferior tibiofibular joint
Where is the inferior tibiofibular joint located?
Between the medial and lateral malleolus
List the groups of bones in the feet
Tarsals
Metatarsals
Phalanges
Where is the superior tibiofibular joint located?
Between the medial and lateral condyles
Name the 7 tarsal bones
Calcaneous Talus Cuboid Navicular Cuneiforms
Name the two landmarks of the calcaneous
Calcaneal tuberosity
Sustentaculum tali
What type of bones are the metatarsals?
Sesamoid bones
List the movements of the feet
Dorsiflexion/extension Plantarflexion/flexion Eversion Inversion Supination Pronation
Describe supination of the feet
Feet together - inversion of front of foot
Describe pronation of the feet
feet apart - eversion of front of foot
Name the joints in the foot
Ankle joint
Intertarsal joint
Metatarsophalangeal joint
Interphalangeal joint
What movement does the ankle joint do?
Dorsiflexion and plantar flexion
What movement does the intertarsal joint do?
Invert/evert
Supinate/pronate
What movements do the metatarsophalangeal joints do?
Extension/flexion
Limited abduction/adduction
What movements do the interphalangeal joints do?
Extension and flexion
What is the ankle joint?
Articulation between talus and tibia/fibula
What type of joint is the ankle joint?
Synovial hinge joint
List the ligaments that stabilize the ankle joint
Lateral collateral ligament
Medial/deltoid collateral ligament
Where is the lateral ligament located?
Lateral malleolus to talus/calcaneous
Where is the medial/deltoid ligament located?
Medial malleolus to talus/calcaneous/navicular
What is the clinical significance of the lateral ligament
Injury
Where is the subtalar joint?
Between talus and calcaneous and navicular
What does the subtalar joint allow?
Inversion and eversion during locomotion
Where is the transverse tarsal joint?
Between forefoot and hindfoot
What does the transverse tarsal joint allow?
Pronation and supination
Eversion and inversion of the forefoot
Important for standing on uneven ground
What is the plantar aponeurosis?
Thickening of the deep fascia
Protects underlying structure
Supports longitudinal arch
What is the clinical significance of the plantar aponeurosis?
Plantar fasciitis - inflammation due to overuse
Name the arches of the foot
Longitudinal and transverse arches
What are the functions of the arches of the foot?
Shock absorbers during locomotion
Act as springboards
Distribution of weight (to calcaneous + ball of foot)
Name the longitudinal arches
Medial and lateral
What are the longitudinal arches supported by?
long tendons, intrinsic plantar muscles, intrinsic ligaments and plantar aponeurosis