Knee Muscles Flashcards
Origin of rectus femoris
Anterior inferior iliac spine (AIIS)
Insertion of rectus femoris
Patella -> Patella tendon –> tibial tuberosity
Action rectus femoris
Flex the hip, extend the knee
Blood supply rectus femoris
Superficial femoral artery
Innervation rectus femoris
Femoral nerve
Origin of vastus medialis
Medial lip of linea aspera
Insertion of vastus medialis
Patella -> patella tendon -> tibial tuberosity
Action vastus medialis
Extend the knee
Blood supply vastus medialis
Superficial and deep femoral artery
Innervation of vastus medialis
Femoral nerve
Origin vastus intermedius
Anterior lateral femur
Insertion vastus intermedius
Patella -> patella tendon -> tibial tuberosity
Action vastus intermedius
Extend the knee
Blood supply vastus intermedius
Deep femoral artery
Innervation vastus intermedius
Femoral nerve
Origin vastus lateralis
Lateral lip linea aspera and greater trochanter
Insertion vastus lateralis
Patella -> patellar tendon -> tibial tuberosity
Action vastus lateralis
Extend the knee
Blood supply vastus lateralis
Superficial femoral artery
Innervation vastus lateralis
Femoral nerve
Articularis genu origin
Anterior distal femoral shaft
Articularis genu insertion
Knee joint capsule
Articularis genu action
Pull knee joint capsule proximally during knee extension
Articularis genu Innervation
Femoral nerve
Articularis genu blood supply
Deep femoral artery
Gracilis origin
Body and inferior ramus of pubis
Gracilis insertion
Pes anserine (medial surface of proximal tibia
Gracilis action
Flex the knee, Hip adduction, medial rotation of hip when knee flexed
Gracilis blood supply
Medial circumflex femoral artery
Gracilis innervation
Obturator nerve
Biceps femoris (long) origin
Ischial tuberosity
Biceps femoris (long) insertion
Head of fibula
Biceps femoris (long) blood supply
Deep femoral artery
Biceps femoris (long) innervation
Tibial nerve
Biceps femoris (short) origin
Linea aspera
Biceps femoris (short) insertion
Head of fibula
Biceps femoris (long) action
Extend the hip, flex the knee, laterally rotate the knee
Biceps femoris (short) action
Flex the knee, laterally rotate the knee
Biceps femoris (short) innervation
Common fibular nerve
Biceps femoris (short) blood supply
Popliteal artery
Semimembranosus origin
Ischial tuberosity
Semimembranosus insertion
Medial condyle of tibia
Semimembranosus action
Extend the hip, flex the knee, medially rotate knee
Semimembranosus blood supply
Deep femoral artery, popliteal artery
Semimembranosus innervation
Tibial nerve
Semitendinosus origin
Ischial tuberosity
Semitendinosus insertion
Pes anserine (medial surface of proximal tibia)
Semitendinosus action
Extend hip, flex the knee, medially rotate knee
Semitendinosus blood supply
Deep femoral artery, popliteal artery
Semitendinosus innervation
Tibial nerve
Popliteus origin
Lateral femoral condyle
Popliteus insertion
Proximal 1/3 posterior tibia
Popliteus action
Medial rotation of tibia on femur, lateral rotation of femur on tibia
Popliteus blood
Popliteal artery
Popliteus innervation
Tibial nerve