26 Ankle and Foot Fractures Anatomy of the Ankle and Foot Bones of the Foot Malleoli • Articulate with trochlea of talus • Medial malleolus: distal tibia • Lateral malleolus: distal fibula Tarsal Bones • Talus Only bone articulating with tibia and fibula Parts and landmarks Head, neck, body, trochlea, lateral process, posterior process (medial, lateral tubercles) Lateral tubercle may be unfused. No muscular attachments Flexor hallucis longus tendon runs between medial and lateral tubercles. • Calcaneus Has multiple facets, posterior largest Sustentaculum tali Supports talar neck, attached to spring ligament Overlies flexor hallucis longus tendon Calcaneal tendon (Achilles) attached to posterior superior tuberosity • Navicular: boat-shaped, with medial tuberosity for tibialis posterior insertion • Cuboid Tuberosity and cuboid groove inferior Most lateral tarsal bone Articulates with metatarsals IV and V Inferior groove for peroneus longus tendon • Medial cuneiform Largest of 3, for metatarsal I Bears partial insertion of peroneus longus • Intermediate cuneiform Shortest Metatarsal II base is recessed, fracturable • Lateral cuneiform: articulates with both navicular and cuboid, as well as metatarsal III Metatarsal Bones • Anterior support of longitudinal arch • 5, numbered I-V, 1-5 • Base, body, head; characteristics of long bone • Peroneus brevis inserts on base of metatarsal V Phalanges • Digit 1 (hallux): proximal and distal (2), 2 sesamoid bones • Digits 2-5: proximal, medial, distal (3) Ankle and Foot Joints • Ankle joint Synovial hinge (ginglymus) Mortise-and-tenon structure with talus between malleoli • Numerous complex synovial joints exist between individual tarsals and between tarsals and metatarsals. • Transverse tarsal joint (Chopart) Calcaneus with cuboid + talus with navicular Allows inversion and eversion Only gold members can continue reading. Log In or Register to continue Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Like this:Like Loading... Related Related posts: Uterus and Adnexal Diseases Prostate Diseases Small Intestine Diseases Liver Diseases Stay updated, free articles. Join our Telegram channel Join Tags: Netters Surgical Anatomy Review PRN Aug 12, 2016 | Posted by admin in ANATOMY | Comments Off on Ankle and Foot Fractures Full access? Get Clinical Tree
26 Ankle and Foot Fractures Anatomy of the Ankle and Foot Bones of the Foot Malleoli • Articulate with trochlea of talus • Medial malleolus: distal tibia • Lateral malleolus: distal fibula Tarsal Bones • Talus Only bone articulating with tibia and fibula Parts and landmarks Head, neck, body, trochlea, lateral process, posterior process (medial, lateral tubercles) Lateral tubercle may be unfused. No muscular attachments Flexor hallucis longus tendon runs between medial and lateral tubercles. • Calcaneus Has multiple facets, posterior largest Sustentaculum tali Supports talar neck, attached to spring ligament Overlies flexor hallucis longus tendon Calcaneal tendon (Achilles) attached to posterior superior tuberosity • Navicular: boat-shaped, with medial tuberosity for tibialis posterior insertion • Cuboid Tuberosity and cuboid groove inferior Most lateral tarsal bone Articulates with metatarsals IV and V Inferior groove for peroneus longus tendon • Medial cuneiform Largest of 3, for metatarsal I Bears partial insertion of peroneus longus • Intermediate cuneiform Shortest Metatarsal II base is recessed, fracturable • Lateral cuneiform: articulates with both navicular and cuboid, as well as metatarsal III Metatarsal Bones • Anterior support of longitudinal arch • 5, numbered I-V, 1-5 • Base, body, head; characteristics of long bone • Peroneus brevis inserts on base of metatarsal V Phalanges • Digit 1 (hallux): proximal and distal (2), 2 sesamoid bones • Digits 2-5: proximal, medial, distal (3) Ankle and Foot Joints • Ankle joint Synovial hinge (ginglymus) Mortise-and-tenon structure with talus between malleoli • Numerous complex synovial joints exist between individual tarsals and between tarsals and metatarsals. • Transverse tarsal joint (Chopart) Calcaneus with cuboid + talus with navicular Allows inversion and eversion Only gold members can continue reading. Log In or Register to continue Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Like this:Like Loading... Related Related posts: Uterus and Adnexal Diseases Prostate Diseases Small Intestine Diseases Liver Diseases Stay updated, free articles. Join our Telegram channel Join Tags: Netters Surgical Anatomy Review PRN Aug 12, 2016 | Posted by admin in ANATOMY | Comments Off on Ankle and Foot Fractures Full access? Get Clinical Tree
