knee Flashcards
how knee stailised
menisci to deepen tibial articulation, capsule , ligaments, muscles
which ligaments
intracapsular- cruciate
capsule- oblique popliteal
extracapsular-collateral
describe path of cruciate
PAMs APpLes
• Posterior passes Anterior inserts Medially
• Anterior passes Posterior inserts Laterally
compare cruciate ligements
ACL- weaker of the two
• Relatively poor blood supply
• Limits anterior movement of Tibia on Femur
• PCL- stronger of the two
• Limits posterior movement of tibia on femur
• In weight bearing flexed knee- PCL is the main stabilizer
role medial/lateral collateral
latera- varus forces
medial- valgus forces
flexion knee
• Hamstrings: Biceps femoris, semimembranosus, semitendinosus
SCIATIC
• Assisted by: Gracilis, sartorius, popliteus, gastrocnemius
extension knee
• Quadriceps femoris (4 muscles)- Rectus femoris, vastus medialis, vastus lateralis, vastus intermedius
FEMORAL
inserts into tibial tuberosity
medial rotation knee
Semitendinosus, semimembranosus, gracilis, sartorius, popliteus
lateral rotation knee
Biceps Femoris
SCIATIC
femoral triangle boundaries
S- inguinal ligament
L- sartorius
M- adductor longus
contents femoral triangle
Lateral to medial NAVEL femoral nerve femoral artery femoral vein emoty space lymph
addcuctor canal boundaries
Anterior: Sartorius. Lateral: Vastus medialis. Posterior: Adductor longus and adductor magnus.
thigh extension
rectus femoris and vastus muscles (femoral)
thigh flexion
sartorius and pectineus (femoral)
thigh adduction
adductor magnus/brevis/longus (obturator)
how is patella dislocated
twisting action in slight fleion, falling on flexed knee
how is menisucs injured
twisting injury in high flexion
how is ACL vs PCL damaged
ACL- non contact. giivng way injury. surgical repair
PCL- contact. fall onto knee or hyperextension. no surgical repair
cause bursitis
pre patellar- housemaids
infrapatellar- clergymans
hallux rigidis
osteoarthritis of big toe - 1st MTP J
planovalgus
adult onset flat foot
which joints plantar/dorsiflexion and inversiom/eversion
plantar/dorsiflexion- ankle
inversiom/eversion- subtalar
plantar flexion and inversion lower leg
tibial nerve, gastrocnemius, tibialis posterior, flexor digitorum longus, flexor hallucis longus
dorsifleion lower leg
deep fibular nerve, tibialis anterior, EDL, EHL
lateral rotation and plantarflexion lower leg
superficial fibular
fibularis longus and brevis
order of stuff in tarsal tunnel
Tom, Dick And Very Nervous Harry T: tibialis posterior D: flexor digitorum longus A: artery (posterior tibial) V: vein (posterior tibial) N: nerve (tibial) H: flexor hallucis longus
popliteal fossa
Superomedial border – semimembranosus.
Superolateral border – biceps femoris.
Inferomedial border – medial head of the gastrocnemius.
Inferolateral border – lateral head of the gastrocnemius and plantaris.
contents popliteal fossa
Its contents are (medial to lateral):
Popliteal artery
Popliteal vein
Tibial nerve
Common fibular nerve (common peroneal nerve)