DEFINITIONS Flashcards
- defined by a joint cavity
- all bones of a structural joint share the same synovial fluid
Structural Joints / Anatomic Joints
- articulation between the posterior facet of the talus with the posterior facet
of the calcaneus - the joint capsule attaches near the articular margins of both facets, is lined
with synovium, and reinforced by several ligaments
Subtalar Joint (STJ)
- articulation of the talus with the navicular, the anterior and middle facets of the talus with the anterior and middle facets of the calcaneus, and the talus with the plantar calcaneonavicular ligament / spring ligament
- all articulations with the head of the talus
Talocalcaneonavicular Joint (TCN joint)
- articulation between the calcaneus and the cuboid
- the joint capsule attaches near the articular margins of both surfaces, is lined with synovium, and reinforced by ligaments
Calcaneocuboid Joint (CC joint)
- articulation of most bones of the midfoot
- the joint capsule is continuous for all surfaces participating in the great tarsal joint, is lined with synovium, and reinforced by many ligaments
Great Tarsal Joint
- articulation between the medial cuneiform and the 1st metatarsal
- capsule attaches at the articular margins and is lined with synovium
First Cuneometatarsal Joint / Medial Tarsometatarsal Joint
- articulations between the cuboid and the 4th metatarsal, the cuboid and the 5th metatarsal, and the 4th and 5th metatarsal bases
- synovial planar (gliding) articulations
Lateral Tarsometatarsal Joint / Cuboideometatarsals 4 and 5 Joint
- anatomic joints that work together as a unit
- the clinical classification
Functional Joints
- these are the strongest of the foot ligaments
- all ligaments are extrasynovial
Interosseous Ligaments
- from the lateral surface of the navicular to the medial surface of the cuboid
- present when this joint is fibrous, not present or partially present when this joint is synovial
Interosseous Cuboideonavicular Ligament
- both strong ligaments to prevent separation of the bones united by each
- support the transverse arch of the foot
Interosseous Intercuneiform Ligaments
- from the non-articular lateral surface of the medial cuneiform to the non-articular medial surface of the intermediate cuneiform
first interosseous intercuneiform ligament
- from the non-articular lateral surface of the intermediate cuneiform to the non-articular medial surface of the lateral cuneiform
second interosseous intercuneiform ligament
- from the non-articular lateral surface of the lateral cuneiform to the
non-articular medial surface of the cuboid (distal placement) - prevents separation of the lateral cuneiform and cuboid bones
Interosseous
Cuneocuboid Ligament
- 3 ligaments that prevent separation of the bones united by each
- each passes from one cuneiform to one metatarsal bone
Interosseous Tarsometatarsal Ligaments
- the strongest of these three
- passes from the (non-articular part of the) lateral surface of the medial cuneiform to the (non-articular) medial surface of the 2nd metatarsal base
Lisfranc’s Ligament / medial interosseous tarsometatarsal ligament / first interosseous tarsometatarsal ligament
- passes from the (non-articular part of the) medial surface of the lateral cuneiform to the (non-articular) lateral aspect of the 2nd metatarsal base
Second interosseous tarsometatarsal ligament / intermediate interosseous tarsometatarsal ligament
- passes from the (non-articular) lateral surface of the lateral cuneiform to the (non-articular) medial aspect of the 4th metatarsal base
lateral interosseous tarsometatarsal ligament / third interosseous tarsometatarsal ligament
- 3 ligaments that prevent separation of the bones united by each
- pass from the groove on the lateral aspect of the base of one metatarsal to the
(non-articular part of the) medial aspect of the base of the adjacent metatarsal - the strongest intermetatarsal ligaments
- none between first and second metatarsal bones
Interosseous Intermetatarsal Ligaments
- from the groove of the 2nd metatarsal base, laterally, to the (non-articular part of the) 3rd metatarsal base, medially
- at the distal extent of the great tarsal joint
first interosseous intermetatarsal ligament
- from the groove of the 3rd metatarsal base, laterally, to the (non-articular part of the) 4th metatarsal base, medially
- at the distal extent of the great tarsal joint
second interosseous intermetatarsal ligament
- from the groove of the 4th metatarsal base, laterally, to the (non-articular part of the) 5th metatarsal base, medially
- at the distal extent of the lateral tarsometatarsal joint
third interosseous intermetatarsal ligament
- from the lateral process of the talus to the lateral surface of the calcaneus
- reinforces the subtalar joint, laterally
Lateral Talocalcaneal Ligament
- from the posterior process of the talus (usually the lateral tubercle) to the
superior surface of the calcaneus - reinforces the subtalar joint, posteriorly
Posterior Talocalcaneal Ligament
- from the superior aspect of the navicular to the superior aspect of the neck of the talus
- reinforces the talonavicular part of the talocalcaneonavicular joint
(Dorsal) Talonavicular Ligament
a. calcaneonavicular part
- from the anterior process of the calcaneus to the dorsolateral edge of
the navicular
- reinforces the calcaneonavicular part of the talocalcaneonavicular joint,
laterally
b. calcaneocuboid part
- from the anterior process of the calcaneus to the dorsomedial aspect of
the cuboid
- reinforces the calcaneocuboid joint, medially
Bifurcate Ligament / Chopart’s Ligament
- from the distal dorsal calcaneal surface to the proximal dorsal surface of the cuboid
- reinforces the calcaneocuboid joint, dorsally
Dorsal Calcaneocuboid Ligament
- from the distal lateral surface of the calcaneus to the proximal lateral surface of the cuboid
- reinforces the calcaneocuboid joint, laterally
Lateral Calcaneocuboid Ligament
- from the lateral dorsal surface of the navicular to the medial dorsal surface of the cuboid
Dorsal Cuboideonavicular Ligament
- reinforce their respective parts of the great tarsal joint, medial and/or dorsal
Dorsal Cuneonavicular Ligaments
- from the proximal dorsal surface of the intermediate cuneiform to the distal dorsal surface of the navicular
intermediate dorsal cuneonavicular ligament
- from the proximal dorsal surface of the lateral cuneiform to the distal dorsal surface of the navicular
lateral dorsal cuneonavicular ligament
- reinforce these parts of the great tarsal joint, dorsally
Dorsal Intercuneiform Ligaments
- from the lateral dorsal surface of the medial cuneiform to the medial
dorsal surface of the intermediate cuneiform
first dorsal intercuneiform ligament
- from the lateral dorsal surface of the intermediate cuneiform to the medial dorsal surface of the lateral cuneiform
second dorsal intercuneiform ligament
- from the lateral dorsal surface of the lateral cuneiform to the medial dorsal surface of the cuboid
- reinforces this part of the great tarsal joint, dorsally
Dorsal Cuneocuboid Ligament
- all ligaments pass from the dorsum of one of the lesser tarsal bones to the dorsum of one or two of the metatarsal bases
- all reinforce the tarsometatarsal joint (Lisfranc’s joint), dorsally
Dorsal Tarsometatarsal Ligaments
- 3 ligaments
- reinforce these joints, dorsally
- fibers blend with the interosseous intermetatarsal ligament fibers
Dorsal Intermetatarsal Ligaments
first dorsal intermetatarsal ligament
second dorsal intermetatarsal ligament
third dorsal intermetatarsal ligament
- passes from the sulcus tali to the sulcus calcanei, fibers pass inferolaterally
- located within the canalis tarsi, therefore is within the sinus tarsi
- forms the border between the capsules of the anatomic subtalar joint and the
talocalcaneonavicular joints - very strong to prevent separation of the talus and calcaneus
- limits eversion of the calcaneus
Interosseous Talocalcaneal Ligament / Ligament of the Tarsal Canal
- passes from the plantar medial aspect of the navicular to the plantar medial aspect of the medial cuneiform
Medial Plantar Cuneonavicular Ligament
- passes from the distal aspect of the sustentaculum tali to the navicular tuberosity and the tubercle for the spring ligament on the plantar navicular
- very strong
Spring Ligament / Plantar Calcaneonavicular Ligament
- passes from the calcaneal anterior tubercle to the calcaneal process and the posterior edge of the cuboid
Short Plantar Ligament / Plantar Calcaneocuboid Ligament
- passes from the calcaneal trigonum plantare to the peroneal ridge of the cuboid and to the bases of the 4 lesser metatarsals (all plantar)
Long Plantar Ligament / Long Plantar Calcaneocuboid Ligament
- passes from the medial tubercle of the posterior process of the talus to the posterior edge of the sustentaculum tali and the adjacent medial surface of the calcaneus
Medial Talocalcaneal Ligament
- from the calcaneal anterior process to the lateral aspect of the talar neck
- usually posterior and medial to the bifurcate ligament
- 2nd strongest of the talocalcaneal ligaments
- located within the sinus tarsi
- limits inversion of the calcaneus
Cervical Ligament / Anterior Talocalcaneal Ligament
- 3 ligaments
- stronger than dorsal intermetatarsal ligaments
- fibers blend with fibers of the interosseous intermetatarsal ligaments
Plantar Intermetatarsal Ligaments
- 5 ligaments
- generally, stronger than the dorsal tarsometatarsal ligaments
- none to the intermediate cuneiform
Plantar Tarsometatarsal Ligaments
- help to support the transverse arch of the foot
- fibers blend with the fibers of the interosseous intercuneiform ligaments
Plantar Intercuneiform Ligaments
- from the posterior apex of the lateral cuneiform to the medial edge of the fibular ridge of the cuboid
Plantar Cuneocuboid Ligament
- from the lateral plantar aspect of the navicular to the medial plantar aspect of the cuboid
Plantar Cuboideonavicular Ligament
- stronger than dorsal cuneonavicular ligaments
- all help reinforce the great tarsal joint
Plantar Cuneonavicular Ligaments