Ankle and Foot Joint Anatomy and Physiology of Human Movement 420:050.

Ankle and Foot Joint

Anatomy and Physiology of Human Movement420:050

Ankle and Foot Joints Complex

26 bones ~ 30 joints > 20 muscles

Simplification Tarsals Extrinsic muscles only 9 joints

Objectives 1. Be able to identify the bones of the ankle and

foot joints. 2. Be able to identify the joints of the ankle and

foot 3. Be able to identify the landmarks of the lower

tibia and lower fibula 4. Be able to identify and describe the

movements of the ankle and foot joints 5. Be able to identify and describe the general

attachments (distal/proximal), and movements of the ankle joint muscles

Ankle and Foot Joint Bones Tibia Fibula Talus Calcaneus Tarsals (5) Metatarsals (5) Proximal phalanges (5) Middle phalanges (4) Distal phalanges (5)

Tibia

Fibula

Talus

Calcaneus

Tarsals

Metatarsals

Interosseus membrane

Proximal phalanges

Middle phalanges

Distal phalanges

Objectives 1. Be able to identify the bones of the ankle and

foot joints 2. Be able to identify the joints of the ankle and

foot 3. Be able to identify the landmarks of the lower

tibia and lower fibula 4. Be able to identify and describe the

movements of the ankle and foot joints 5. Be able to identify and describe the general

attachments (distal/proximal), and movements of the ankle joint muscles

Ankle and Foot Joints Talocrural joint (ankle)

Uniaxial hinge Subtalar joint

Gliding/nonaxial Transverse tarsal joints

Gliding/nonaxial Intertarsal joints

Gliding/nonaxial Tarsometatarsal joints

Gliding/nonaxial

Metatarsophalangeal joints Biaxial ball and socket

Proximal interphalangeal joints

Little toes – Uniaxial hinge

Distal interphalangeal joints Little toes – Uniaxial

hinge Interphalangeal joint

Big toe – Uniaxial hinge

Talocrural joint

Subtalar joint

Plantar/dorsiflexion

Sagittal, ML axis

Eversion/inversion

Frontal plane AP axis

Transverse tarsal jointsIntertarsal joints

Tarsometatarsal joints

Metatarsophalangeal jointsProximal interphalangeal jointsDistal interphalangeal joints

Interphalangeal joint

Objectives 1. Be able to identify the bones of the ankle and

foot joints 2. Be able to identify the joints of the ankle and

foot 3. Be able to identify the landmarks of the lower

tibia and lower fibula 4. Be able to identify and describe the

movements of the ankle and foot joints 5. Be able to identify and describe the general

attachments (distal/proximal), and movements of the ankle joint muscles

Bony Landmarks Lateral malleolus Medial malleolus

Objectives 1. Be able to identify the bones of the ankle and

foot joints 2. Be able to identify the joints of the ankle and

foot 3. Be able to identify the landmarks of the lower

tibia and lower fibula 4. Be able to identify and describe the

movements of the ankle and foot joints 5. Be able to identify and describe the general

attachments (distal/proximal), and movements of the ankle joint muscles

Ankle and Foot Joint Movements Flexion/Extension

Talocrural joint (plantar/dorsiflexion) Proximal interphalangeal joints Distal interphalangeal joints Interphalangeal joint Metatarsophalangeal joints (Biaxial B+S)

Inversion/Eversion Subtalar joint Transverse tarsal joints

Abduction/Adduction/Circumduction Metatarsophalangeal joints (Biaxial B+S)