The Anatomy of the Knee: Muscles and Tendons
Quadriceps 4 Muscles Rectus Femoris Vastus Intermedius (Underneath Rectus Femoris) Vastus Medialis Vastus Lateralis Location: Anterior thigh Action: Knee EXTENSION
Rectus Femoris
Vastus Intermedius Underneath Rectus Femoris
Vastus Medialis
Vastus Lateralis
Quadriceps vs. Patellar Tendon Quadriceps Muscle Quad Tendon Patella Patellar Tendon Tibial Tuberosity Quadriceps muscles all ultimately insert (end) at the tibial tuberosity Quadriceps Muscle Quadriceps Tendon Patella Patellar Tendon Tibial Tuberosity
Hamstrings 3 Muscles Semimembranosus Semitendinosus Biceps Femoris Location: Posterior Thigh Action: Knee FLEXION
Hamstrings
Pes Anserine Conjoined tendon of three muscles Sartorius (Hip Flexor) Gracilis (Adductor) Semitendinosus (Hamstring) Location: Anterior medial aspect of tibia
Pes Anserine Function: These three muscles all help with knee FLEXION Adds stability to medial knee
Iliotibial Band (IT) Band Long tendon of the TFL and part of gluteus maximus Function: Adds stability to the lateral knee
Iliotibial Band (IT) Band