Joints of the Foot and Ankle Part 2 Flashcards
Articular facet for cuboid
part of calcaneus that articulates with the cuboid
Articular facet for cuboid is __ shaped
saddle;
concave superior to inferior,
convex medial to lateral
anterior process of the calcaneus
- Projects over cuboid
- Visible on lateral radiograph
calcaneocuboid joint
between calcaneus and cuboid, part of midtarsal joint
beak of cuboid articulation with coronoid fossa of calcaneous helps
stabalize joint during inversion
calcaneocuboid joint is a
diarthrosis saddle joint (sellar)
calcaneocuboid joint joint capsule attaches to
articular margins
blood supply to the calcaneocuboid joint
dorsalis pedis, lateral plantar, perforating fibular, lateral tarsal
Dorsal (dorsolateral) calcaneocuboid ligament attaches from
distal dorsal calcaneus to proximal dorsolateral aspect of cuboid
Bifurcate ligament
- Dorsal calcaneonavicular ligament
- Calcaneocuboid ligament (dorsomedial calcaneocuboid)
long plantar ligament (superfical calcaneocuboid) attaches from
trigonum plantare of calcaneus
to fibular ridge of cuboid AND plantar aspect of the bases of metatarsals 2-4(5)
which ligament separates origins of quadratus plantae ?
long plantar ligament
long plantar ligament creates ____ by its attachment to fibular ridge (cuboid ridge, or crest) and met bases
fibular (peroneal) canal
long plantar ligament helps maintain what arch
lateral longitudinal arch
short plantar ligament (deep calcaneocuboid) attaches from
calcaneal tubercle (anterior tubercle of calcaneus) to cuboid, posterior to fibular ridge including the beak (coronoid process of cuboid)
short plantar ligament (deep calcaneocuboid) helps maintain
lateral longitudinal arch
stabalizing ligaments of calcaneocuboid joint
- dorsal (dorsolateral) calcaneocuboid
- bifurcate
- long plantar
- short plantar
2 joints of the midtarsal joint (transverse tarsal joint. chopart’s joint)
Calcaneocuboid joint + talonavicular portion of talocalcaneonavicular
midtarsal joint is a ___ joint
fucntional,
triplanar: supination and pronation
cyma line
- Line through midtarsal joint
- Undisrupted “S”-shaped curve
3 anatomic joints:
posterior talocalcaneal,
talocalcaneonavicular,
and calcaneocuboid
talocalcaneal + talocalcaneonavicular
subtalar
talonavicular + calcaneocuboid
midtarsal
Ligaments in the Tarsal Sinus
- Interosseous talocalcaneal ligament
- Cervical ligament
- Bifurcate ligament
- Frondiform ligament
lateral root of the frondiform ligament originates
lateral to EDB
lateral root of the frondiform ligament blends with
inferior fibular retinaculum
intermediate root of the frondiform originates from
sinus tarsi, medial to EDB
intermediate root of the frondiform is posterior to
cervical ligament
intermediate root of the frondiform unites with
lateral root to form superficial component of frondiform ligament
3 components of the medial root of frondiform ligament
- lateral calcaneal component
- medial calcaneal component
- Talar component
Lateral calcaneal component originates
in sinus tarsi, posterior to intermediate root
Medial calcaneal component attaches
to floor of tarsal canal
talar component attaches
to roof of tarsal canal (neck of talus)
great tarsal joint consist of
bones of the midfoot
great tarsal joint articulations share
joint capsule lined with synovium
blood supply to the great tarsal joint
branches of dorsalis pedis (tarsal arteries), medial and lateral plantar arteries
great tarsal joint is a ___ joint
planar, synovial, diarthrosis
articulations of great tarsal joints
- Cuneonavicular joints
- Intercuneiform joints
- Cuneocuboid joint
- Cuboideonavicular joint (synovial joint present 50%)
- 2nd and 3rd Cuneometatarsal joint
- Intermetatarsal joint of 2nd and 3rd metatarsals
- Intermetatarsal joint of 3rd and 4th metatarsals
Cuneonavicular joints
Between the 3 cuneiforms and navicular
Intercuneiform joints
Between medial and intermediate cuneiforms (1st) ; intermediate and lateral cuneiforms (2nd)
Cuneocuboid joint
Between lateral cuneiform and cuboid
Cuboideonavicular joint (synovial joint present 50%)
Between medial surface of cuboid and lateral surface of navicular
2nd and 3rd Cuneometatarsal joint
- Together can be referred to as the intermediate tarsometatarsal joint
- between base of 2nd metatarsal and cuneiforms
- between lateral cuneiform and base of 3rd metatarsal
Boundaries of great tarsal joint
- Lateral interosseous tarsometatarsal ligament
- Cuboideonavicular interosseous ligament
- Lisfrancs’s Ligament (Medial tarsometatarsal
- Interosseous cuneocuboid ligament
ligaments of the great tarsal joint
- Cuneonavicular joints
- Intercuneiform joints
- Cuneocuboid joint
- Cuboideonavicular joint (synovial 50%)
- 2nd and 3rd Cuneometatarsal joint (intermediate tarsometatarsal joint)
Cuneonavicular joints
Dorsal (3) and plantar (3) cuneonavicular ligaments
One between each cuneiform and navicular
which great tarsal joint has NO interosseous ligaments
Cuneonavicular joints
Intercuneiform joints
Dorsal (2), interosseous (2) and plantar (2) intercuneiform ligaments
(One between each cuneiform)
intercuneiform and cuneocuboid joint supports
transverse arch
Cuneocuboid joint ligaments
Dorsal, interosseous, and plantar cuneocuboid ligaments
50% synovial joint
Cuboideonavicular joint
Cuboideonavicular joint ligaments
- Dorsal, interosseous, and plantar cuboideonavicular ligaments
- Interosseous is small if synovial joint is present
Lisfranc’s joint
tarsometatarsal joint
Lisfranc’s joint is a
planar, synovial joint, diarthrosis, (not much movement)
lisfranc’s joint: Functional joint between
metatarsals and cuboid/cuneiforms
The cuneiforms form
a mortise for the 2nd metatarsal base.
2nd metatarsal base functions as __
Very important in the stability of Lisfranc’s joint
a tenon
The 2-4th metatarsal bases form
a shallow mortise for the lateral cuneiform
1st Cuneometatarsal Joint (Medial tarsometatarsal joint)
between medial cuneiform and 1st metatarsal
Joint capsule attached to articular margins
Planar, synovial; diarthrosis
1st Cuneometatarsal Joint blood supply
medial plantar and dorsalis pedis
2nd and 3rd Cuneometatarsal joint (intermediate tarsometatarsal joint)
Between
- 2nd metatarsal base with all 3 cuneiforms
- 3rd metatarsal base with lateral cuneiform
2nd and 3rd Cuneometatarsal joint (intermediate tarsometatarsal joint) is also a part of
great tarsal joint
2nd and 3rd Cuneometatarsal joint blood supply
branches from deep plantar arch and dorsalis pedis
Metatarsocuboid joint of 4 and 5 (Lateral tarsometatarsal joint)
- Between cuboid and bases of the 4th and 5th metatarsals
- Planar, synovial joint; diarthrosis
Metatarsocuboid joint of 4 and 5 blood supply
branches from arcuate, lateral tarsal and deep plantar arch
how many Dorsal tarsometatarsal ligaments of the tarsometatarsal joint
7 (sometimes 8)
Plantar tarsometatarsal
(irregular in number number 3-5)
No plantar ligaments to which tarsal bone
intermediate cuneiform
1st Dorsal tarsometatarsal
between medial cuneiform and 1st metatarsal base
2nd Dorsal tarsometatarsal
between medial cuneiform and 2nd metatarsal base
3rd Dorsal tarsometatarsal
between intermediate cuneiform and 2nd metatarsal base
4th Dorsal tarsometatarsal
between lateral cuneiform and 2nd metatarsal base
5th Dorsal tarsometatarsal
between lateral cuneiform and 3rd metatarsal base
sometimes between lateral cuneiform and 4th met base
6th Dorsal tarsometatarsal
between dorsomedial cuboid 4th metatarsal bases
7th Dorsal tarsometatarsal
between dorsolateral cuboid to 5th metatarsal base
Plantar tarsometatarsal: 1st medial cuneiform to
1st metatarsal base
Plantar tarsometatarsal : 2nd medial cuneiform
splits into 2 bands; to 2nd (deep) and 3rd (superficial) metatarsal bases
Plantar tarsometatarsal : 3rd from lateral cuneiform to
3rd (sometimes 4th) metatarsal base
Plantar tarsometatarsal : 4th from cuboid to
4th metatarsal base
Plantar tarsometatarsal : 5th from cuboid to
5th metatarsal base
Interosseous tarsometatarsal (3)
- lisfranc’s ligament (medial)
- intermediate interosseous tarsometatarsal ligament
- lateral interosseous tarsometatarsal ligament
Lisfranc’s ligament (1st or medial interosseous tarsometatarsal ligament) from
lateral aspect of medial cuneiform to medial aspect of 2nd met base
Stronger than other interosseous tarsometatarsal ligaments
Lisfranc’s ligament
Intermediate interosseous tarsometatarsal ligament from
medial aspect of lateral cuneiform to lateral aspect of 2nd met base
Lateral interosseous tarsometatarsal ligament from
lateral surface of lateral cuneiform to medial aspect of 4th met base)
There is variation in attachments for the ___ & __ interosseous tarsometatarsal ligaments.
intermediate and lateral
Long axis of calcaneus is directed
superiorly and laterally.
Superior angulation is referred to as
calcaneal pitch
___ between long axis of talus and calcaneus
~ 30 - 35⁰
2nd metatarsal base articulates with which cuneiforms
medial, intermediate, lateral
3rd metatarsal base articulates with which cuneiforms
just lateral