Attachments of Vastus Lateralis Muscle: Origin & Insertion
Greater trochanter. It also attaches to the lateral lip of linea aspera of femur. Insertion: (distal attachments): Quadriceps tendon to base of patella and onto tibial tuberosity via the patellar ligament.
What is the origin and insertion of vastus medialis?
Description. Vastus medialis is one of the four muscles that make up the quadriceps group of muscles. It originates from the upper part of the femoral shaft and inserts as a flattened tendon into the quadriceps femoris tendon, which inserts into the upper border of the patella.
Where is the vastus lateralis injection site?
The injection site is halfway down the vastus lateralis, which is the muscle on the outside of the thigh. Markers include the greater trochanter, and the lateral femoral condyle – the injections site is about halfway between these two levels.
What is vastus lateralis?
The vastus lateralis (VL) is a unipennate muscle and a member of the anterior compartment of the thigh along with the sartorius, quadriceps femoris, rectus femoris (RF), vastus medialis (VM), and vastus intermedius (VI) muscles.
What nerve innervates the vastus lateralis?
The vastus lateralis is the largest of the quadriceps muscles. It receives motor innervation through a branch of the fem- oral nerve, namely the MNVL.
What is the origin and insertion of the quadriceps?
They originate at the ilium (upper part of the pelvis, or hipbone) and femur (thighbone), come together in a tendon surrounding the patella (kneecap), and insert at (are attached to) the tibia (shinbone).
What is the action of the vastus lateralis?
The vastus laterails works with the other quad muscles to help extend your knee joint. It also is active in maintaining thigh and kneecap position while walking and running.
Where is the insertion of the sartorius?
The insertion for the sartorius muscle is the superior medial aspect of the tibial shaft, near the tibial tubercle. Two other tendons join it at its insertion: the gracilis and semitendinosus, to create the conjoined tendons known as the pes anserinus. At the knee, it acts to flex as well as internally rotate.
What type of muscle is vastus lateralis?
Anatomy: The vastus lateralis muscle is the largest muscle of the quadriceps group. It originates from the upper part of the intertrochanteric line, the anterior and inferior borders of the greater trochanter, the lateral lip of the gluteal tuberosity, and the proximal half of the upper lip of the linea aspera.
What is the antagonist to vastus lateralis?
The agonist-antagonist muscle pairs were vastus lateralis-biceps femoris, vastus medialis-semimembranosus/semitendinosus, vastus medialis-medial gastrocnemius, and semimembranosus/semitendinosus-medial gastrocnemius.
