anatomy 2 Flashcards
how often is the fibulotalocalcaneal ligament:
poorly defined
replaced by deep fascia
well defined
poor:20%
replaced:20%
well defined: 60%
what is the spacial relationship of the tarsal sinus and canal to the talocalcaneal joint? what is its significance
tarsal sinus/canal lies ANTERIOR to talocalcaneal joint. they separate the TC joint and TCN joint
attachments for the medial talocalcaneal ligament?
medial tubercle of talus–> sustentaculuim tali
what are the ligaments to the TC joint
medial talocalcaneal Lateral talocalcaneal Anterior talocalcaneal Posterior talocalcaneal interosseous talocalcaneal
what ligament lies between the subtalar and talocalcaneonavicular joint? whats the orientation?
subtalar joint lies posterior to interosseous talocalcaneal, talocalcaneonaviuclar joint lies anteriorly
what ligament helps check for over-inversion? whats another name of this? what does it attach to?
anterior talocalcaneal ligament aka cervical ligament attaches to neck of talus.
what does the talus articulate with in the TCN joint? what type of joint is it?
anterior and middle facet of calcaneus, navicular, fibrocartilaginous thickening in superior part of spring ligament
ball and socket type joint: TN
Gliding: TC
what are the ligaments for the TCN joint?
interosseous talocalcaneal ligament
dorsal talonavicular ligament
calcaneonavicular part of the bifurcated ligament
spring ligament
what are the attachments for the bifurcated ligament
stem of ligament blends with cervical ligament at tarsal sinus
Calcaneonavicular ligament passes anteromedially to dorsal surface of navicular.
calcaneocuboid part courses anterolaterally to medial surface of cuboid
Attachment of the plantar calcaneonavicualr ligament
spring ligament forms an articular surface of the TCN joint.
posteriorly, ligament attached to anterior border of sustentaculum tali.
Anteriorly, attached to plantar surface of navicular, and navicular tuberosity
what is the function of the spring ligament? what happens if gets stretched?
help support head of talus by maintaining the medial longitudinal arch of foot
if it gets stretched, medial longitudinal arch flattens
what type of joint is calcaneocuboid?
saddle type synovial joint.
what are the ligaments of the calcaneocuboid joint? which ones are part of the articular capsule
calcaneocuboid part of the bifurcated ligament
long plantar ligament
plantar calcaneocuboid ligament (short plantar)
part of the articulating capsule:
- dorsal calcaneocuboid ligament
- lateral calcanecuboid ligament
attachments for long plantar ligament
medial/lateral processes and depression between the processes
anteriorly:
deep fibers: attach to peroneal ridge of cuboid
superficial fibers: base of 2,3,4 mets
sometimes to 5th
short plantar ligament attachemtns
anterior tubercle of calcaneus and posterior to peroneal ridge and coronoid process of cuboid
what supports the lateral longitudinal arch of the foot?
medial longitudinal arch?
lat: short and long plantar ligament
medial: spring ligament
how many articular capsules surround the great tarsal joint
single articular capsule. all surfaces share the same synovial membrane and synovial fluid
what are the bones that particdipate in the great tarsal joint? how many articulations are there?
all except talus and calcaneus, and metatarsal 2,3,4
12 articulations
what are the two variations in articulations of great tarsal joint
3rd and 4th met is not part of great tarsal joint in some
and cuboid and navicular articulate in some, normally there is a FIBROUS (rather synovial) joint betweeen the cuboid and navicualr
what are the anatomical intertarsal joints
talocalcaneal, TCN joint, Calcaneocuboid joint, great tarsal joint
what composes the functional subtalar joint
talocalcaneal joint, and the TC part of the TCN joint
what makes up the functional transverse tarsal joint? what is also known as?
aka midtarsal joint
calcaneocuboid and talonavicular of TCN joint
what functional joint is Great tarsal joint a part of?
NONE!!!
what is unique to deep transverse metatarsal ligament? alternate name? what does it separate?
deep transverse metatarsal ligament aka intercapitular ligament. unite all 5 heads of the meatarsal. union of 1st and 2nd head is unique to human
separates lumbricals that pass plantarly to ligament, and interossei which is above ligament