Wk 5: ankle & foot Flashcards
Interphalangeal joints - ligaments
- Collateral ligaments
- Plantar ligaments
Collateral ligaments limit (interphalangeal)
flexion
Plantar ligaments limit (interphalangeal)
extension
Interphalangeal joints classification
synovial
uniaxial
hinge
Interphalangeal joints movements
flexion and extension
Metatarsophalangeal joints – ligaments
Collateral ligaments
Plantar ligaments
Deep transverse metatarsal ligaments
Collateral ligaments (metatarsophalangeal)
- Limits: flexion
- Prevents: adduction and abduction in flexion
Plantar ligaments (metatarsophalangeal)
- Forms part of the articular surface
- Limits: extension
Deep transverse metatarsal ligaments (metatarsophalangeal)
- Keeps the metatarsal heads together
- Important in weight bearing
Metatarsophalangeal joints classification
synovial
biaxial
condyloid
Metatarsophalangeal joints movements
flexion/extension
abduction/adduction
Metatarsophalangeal joints aritcular surfaces
head of the metatarsal and base of the adjacent phalanx
Tarsometatarsal joint classification
synovial
multiaxial
plane
Tarsometatarsal joint movements
flexion & extension
(some ab & rotation at the first joint)
Tarsometatarsal joint articular surfaces
- 1st metatarsal with medial cuneiform
- 2 nd (recessed) with intermediate cuneiform, as well as medial & lateral cuneiforms
- 3 rd with lateral cuneiform
- 4 th with lateral cuneiform & cuboid
- 5 th with cuboid
Calcaneocuboid joint classification
synovial
multiaxial
plane
Calcaneocuboid joint articular surfaces
Facet on anterior surface of calcaneus
Posterior facet of the cuboid
Calcaneocuboid joint ligaments
- Plantar calcaneocuboid (short plantar) ligament
- Long plantar ligament
- Bifurcate ligament (lateral part only)
Talocalcaneonavicular joint classification
synovial
multiaxial
ball & socket
Talocalcaneonavicular joint articular surfaces
- Anterior facet on upper surface of calcaneus (female): sometimes in two parts
- Posterior facet of the navicular (female)
- Plantar calcaneonavicular (spring) ligament
- Head and (partially) neck of the talus (male)
Subtalar joint classification
synovial
multiaxial
plane
Subtalar joint articular surfaces
Facet on under surface of the talus (female)
Posterior facet on upper surface of calcaneus (male)
Subtalar joints ligaments
- Interosseous (talocalcaneal) ligament
- Two bands both anterior to the joint
- Run almost vertically in the space between talus and calcaneus
- Calcaneal parts of the ankle ligaments also cross this joint
Talocalcaneonavicular joint ligaments
- Plantar calcaneonavicular (spring) ligament
- Bifurcate ligament (medial part only)