Joints Flashcards
what are the intrinsic hip ligaments?
iliofemoral
ischialfemoral
pubofemoral
what is the shape and function of iliofemoral ligament
y shaped covers anterior aspect of the hip
-prevents overextension
pubofemoral ligament function
strengthens anterior and inferior part of capsule
helps prevent overabduction and overextension
ischiofemoral ligament function
strengthens joint posteriorly helps prevent overextension
5 extracapsular ligaments of knee joint
1) patellar ligament
2) fibular collateral ligament
3) tibial collaretal ligament (intrinsic)
4) oblique popliteal ligament (intrinsic)
5) arcuate popliteal ligament
Planet Fitness Takes On All
Patellar retincaula
aponeurotic expansions of the vastus medialis and lateralis
support the articular capsule laterally and medially
1) medial and lateral longitudinal patellar retinaculum
2) medial and lateral transverse patellar retinaculum
fibular collateral ligament
popliteus tendon passes deep to it, seprates it from lateral meniscus
biceps femoris tendon split by fibular collateral ligament
medial or tibial collateral ligament
deep fibers attach to medial meniscus so often more damaged
tibial and fibular collateral ligaments
prevent damage to side of knee joint
taut when leg exteneded
slack during leg flexion
oblique popliteal ligament
expansion of semimembranousus tendon, strengthens capsule posteriorly
aarcuate popliteal ligament
y shaped, arches over popliteus and strengthens capsule posteriorly
ACL origin and insertion
origin, anterior part intercondylar eminence
inserts: medial side of lateral condyle of femor
PCL origin and insertion
posterior part intercondylar area of tibia
then attaches to lateral surface of medial condyle
functgion of anteromedial bundle
resists anterior tibial translation especially during flexion
function of posterolateral bundle
resist anterior tibial translation and tibial rotation in extension
what makes up the dynamic arch?
tibialis anterior and posterior, flexor hallucis longus, intrinsic plantar muscles (T & P have internally progressed)
passive arch
spring ligaments, plantar aponeurosis, shorta and long plantar ligaments
long plantar ligament goes where to where?
off calcaneus and base to 3rd and 4th metatarsal
where is short plantar ligament
deep to long plantar ligament from calcaneus to cuboid
where is spring ligament?
medial to short plantar attaches calcaneo to navicular
pes planus clinical note
- flat feet from loss of medial longitudinal arch
- short and long plantar ligaments, and plantar aponeurosis become abnormally stretched
- spring ligament cannot support talar head and talus moves inferiormedially and becomes promonent
hallux valgus: 3 things
- lateral deviation of great toe,
- bursa swells and gives you a bunion
- corns over proximal interphalangeal joints
mallet toe
flexion in the distal IP joint
hammer toe and what digit usually?
extension MP joint and plexion at proximal IP joint (usually digit 2)
claw toe
extension at MP joint and flexion at proximal and distal IP joint
trigger toe
extension of MP joint and flexed proximal IP joint in big toe
what are toe deformities due to?
shortened flexor muscles
ankle joint articular capsule
thin anteriorly and posteriorly
each side supported by strong collateral ligaments
what kind of joint is the ankle joint?
hinge synovial joint with plantar and dorsi flexion
where does the ankle joint form?
where the tibia meets the talus
name the ligaments in the deltoid ligament that connects tibia to tarsals and what side of the foot?
Anterior tibiotalar part tibrionavicular part tibiocalcaneal part posterior tibiotalar part (ATT Plan) medial side
what is the main ligament sprain and what side?
anterior talofibular ligament on the lateral side
what is the high ankle sprains?
posterior tibiofibular ligament and anterior tibiofibular ligament which make up the tibiofibular syndesmosis
other ligaments in ankle sprain?
posterior talofibular ligament and calcaneofibular ligament
2 important intertarsal joints:
1) transverse tarsal joint
2) subtalar joint
transverse tarsal joint (2)
-and function?
calcaneocuboid more lateral
talonavicular joint more medial
-function: permits slight rotation and adds to inversion and eversion at talocalcanel joint
where would you amputate the foot?
across transverse tarsal joint
subtalar joint has which ligament?
interosseous talocalcaneal ligament
potts fracture is?
Deltoid ligament tear, fractured medial malleolus and fibula, torn anterior tibiofibular ligament
