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The "quadriceps" are made up of four muscles; Rectus Femoris, Vastus Medialis, Vastus Lateralis, and Vastus Intermedius. They all insert into the Tibial tuberosity (small bump on the upper tibia) but their origins differ. Rectus Femoris originates from the anterior inferior iliac spine (bump on the ilium). Vastus medialis, lateralis, and intermedius originate from the upper shaft of the femur.

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9y ago
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11y ago

The rectus femoris originates at the AIIS of the pelvis, and is the only muscle of the group to cross the hip joint. The other three muscles (vastus medialis, intermedialis, and lateralis) all originate at the femur, around the intertrochanteric line. The quadriceps then insert into the tibial tuberosity, via the patellar tendon.

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13y ago

patella and tibial tiberosity

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11y ago

anterior superior iliac

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Q: What are the origins and insertions of the quadriceps group?
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