Vastus lateralis muscle
| Vastus lateralis muscle |
|---|
|
| anterior thigh muscles |
| origin |
| Lateral surface of the thigh bone (Facia ant. and lat. trochanter major, labium lat. of Linea aspera) |
| approach |
| Kneecap (base patellae, lig. Patellae, Latin fascia of the retinaculum patellae), tibial tuberosity of the shinbone |
| function |
| Extensor of the knee joint |
| Innervation |
| Femoral nerve |
| Spinal segments |
| L2-L4 |
The vastus lateralis muscle ( Latin for "outer broad muscle", "outer broad thigh muscle" or "outer thigh muscle "; old name: Musculus vastus fibularis , German: "lateral thigh muscle " ) is one of the anterior muscles of the thigh . It is one of the four heads of the quadriceps femoris muscle (four-headed thigh muscle). The kneecap is embedded in the common tendon of the quadriceps as a sesamoid . The tendon is finally attached to the tibial tuberosity of the tibia via the patellar ligamentattaches and forms the insertion of the muscle. The vastus lateralis muscle is also the strongest muscle head of the quadriceps femoris muscle.
function
The vastus lateralis muscle, together with the other muscles of the quadriceps femoris muscle, stretch the knee joint . Imbalances in these muscles, for example due to paralysis, exert transverse forces on the kneecap ( patella ), which can lead to habitual dislocation of the kneecap ( patellar dislocation ).
Individual evidence
- ↑ Willibald Pschyrembel: Clinical Dictionary . 61st to 84th edition. de Gruyter Verlag, Berlin 1944, p. 487.
- ↑ Michael Schünke: Functional Anatomy - Topography and Function of the Movement System . Georg Thieme, Stuttgart 2000, ISBN 978-3-13-118571-6 , p. 344.