| A | B |
|---|
| Origin of biceps femoris (long head) | ischial tuberosity |
| Origin of biceps femoris (short head) | posterior femoral shaft |
| Origin of semimembranosus and semitendinosis | ischial tuberosity |
| Hamstring group | biceps femoris, semitendinosus, semimembranosus |
| Insertion of biceps femoris | head of the fibula |
| Insertion of semimembranosus and semitendinosus | medial tibial condyle |
| Quadriceps group | rectus femoris, vastus lateralis, vastus medialis, vastus intermedius |
| Origin of rectus femoris | Anterior inferior iliac spine (AIIS) |
| Origin of vastus medialis, vastus intermedius, vastus lateralis | shaft of the femur |
| Insertion of the quadriceps group | tibial tuberosity |
| Action of the hamstring group | flexion at the knee and extension of the hip |
| Action of the rectus femoris | extension of the knee and flexion of the hip |
| Action of the vastus (3) muscles | extension at the knee |
| Adductor group | Pectineus, adductor magnus, adductor longus, adductor brevis, gracilis |
| Action of the adductor group | adduction of the femur at the iliofemoral joint (hip) |
| Origin of the adductors (all) | Pubis |
| Insertion of the adductors | medial shaft of the femur |
| Insertion of the Gracilis | medial shaft of the femur (pes anserine area) |
| Origin of the gastrocnemius | lateral and medial condyles of the femur |
| Insertion of the gastrocnemius and soleus | Achilles tendon (calcneal tendon) |
| Origin of the soleus | posterior shaft of tibia and fibula |
| Action of the gastrocnemius | plantarflexion of the ankle and assist flexion of the knee |
| Action of the soleus | plantarflexion of the ankle |
| Origin of the tibialis anterior | lateral shaft of the tibia and lateral condyle of femur |
| Insertion of the tibialis anterior | base of the 1st metatarsal |
| Action of the tibialis anterior | dorsiflex the ankle |
| Origin of Peroneus longus and brevis | lateral shaft of the fibula |
| Insertion of the peroneus longus | base of the 1st metatarsal (posterior or plantar surface) |
| Insertion of the peroneus brevis | base of the 5th metatarsal |
| Action of the peroneus muscles | eversion of the ankle |
| Origin of the tibialis posterior | posterior tibial shaft |
| Insertion of the tibialis posterior | navicular and base of the 1st metatarsal (plantar) |
| Action of the tibialis posterior | inversion of the ankle |
