Knee Flex/Ext/Rotation Flashcards
Rectus femoris origin
Anterior inferior iliac spine (AIIS)
Rectus femoris insertion
Patella and through the patella tendon to tibial tuberosity
Rectus femoris action
Knee extension, hip flexion
Rectus femoris innervation
Femoral nerve
Rectus femoris blood supply
Superficial femoral artery
Vastus lateralis origin
Greater trochanter & lateral lip of linea aspera of femur
Vastus lateralis insertion
Patella and through patella tendon to tibial tuberosity
Vastus lateralis action
Knee extension
Vastus lateralis innervation
Femoral nerve
Vastus lateralis blood supply
Superficial femoral artery
Vastus medialis origin
Medial lip of linea aspera of femur
Vastus medialis insertion
Patella and through patella tendon to tibial tuberosity
Vastus medialis action
Extend knee
Vastus medialis innervation
Femoral nerve
Vastus medialis blood supply
Superficial femoral artery and deep femoral artery
Vastus intermedius origin
Anterior and lateral surfaces of the femur
Vastus intermedius insertion
Patella and through patella tendon to tibial tuberosity
Vastus intermedius action
Extend knee
Vastus intermedius innervation
Femoral nerve
Vastus intermedius blood supply
Deep femoral artery
Gracilis origin
Body and inferior ramus of pubis
Gracilis insertion
Pes anserine (medial surface of proximal tibia), distal to medial condyle
Gracilis action
Hip adduction, knee flexion, medial rotation of hip when knee flexed
Gracilis innervation
Obturator nerve
Gracilis blood supply
Medial circumflex femoral artery
Biceps femoris (long head) origin
Ischial tuberosity
Biceps femoris (long head) insertion
Head of fibula
Biceps femoris (long head) action
Extend hip, flex knee, lateral rotation of knee
Biceps femoris (long head) innervation
Tibial nerve
Biceps femoris (long head) blood supply
Deep femoral artery
Biceps femoris (short head) origin
Linea aspera of femur
Biceps femoris (short head) insertion
Head of fibula
Biceps femoris (short head) action
Knee flexion, lateral rotation of knee
Biceps femoris (short head) innervation
Common (peroneal) fibular nerve — after sciatic split
Biceps femoris (short head) blood supply
Popliteal artery
Semimembranosus origin
Ischial tuberosity
Semimembranosus insertion
Medial condyle of tibia
Semimembranosus action
Extend hip, flex knee, medially rotate knee
Semimembranosus innervation
Tibial nerve
Semimembranosus blood supply
Deep femoral artery and popliteal artery
Semitendinosus origin
Ischial tuberosity
Semitendinosus insertion
Pes anserine (medial surface of proximal tibia), distal to medial condyle
Semitendinosus action
Hip extension, knee flexion, medially rotate knee
Semitendinosus innervation
Tibial nerve
Semitendinosus blood supply
Deep femoral artery and popliteal artery
Popliteus origin
Lateral femoral condyle
Popliteus insertion
Proximal 1/3 posterior tibia (proximal to soleal line)
Popliteus action
“Lock/unlock” knee — medial rotation of tibia on femur aka lateral rotation of femur on tibia
Popliteus innervation
Tibial nerve
Popliteus blood supply
Popliteal artery
Articularis genu origin
Anterior distal shaft of femur
Articularis genu insertion
Knee joint capsule
Articularis genu action
Tenses & pulls joint capsule proximally during knee extension
Articularis genu innervation
Femoral nerve
Articularis genu blood supply
Deep femoral artery