Rectus femoris: A quadriceps (thigh) muscle that crosses both the hip and knee and serves as a primary hip flexor. • Sartorius: As the longest muscle in the body, it runs from the hip to the ...
What are hip flexors? Your hip flexors are a group of muscles primarily responsible for lifting your knees and bending at the waist. These include: • Iliopsoas: The powerhouse of hip flexion ...