The vastus intermedius muscle is thus brought into view; divide it in the line of its fibers down to the femur.

Then expose the femur by subperiosteal reflection of the incised vastus intermedius muscle.

Decline running produces more sarcomeres in rat vastus intermedius muscle fibres than incline running.

The tendon of the quadriceps femoris muscle attaches to the base of the patella., with the vastus intermedius muscle attaching to the base itself, and the vastus lateralis and vastus medialis are attached to outer lateral and medial borders of patella respectively.