Tensor fasciae latae muscle
| Tensor fasciae latae muscle |
|---|
|
| Upper thigh muscles |
| origin |
| Anterior superior iliac spine of the iliac bone ( os ilium ) and aponeurosis of the gluteus medius muscle |
| approach |
| Via the iliotibial band on the lateral condyle of the tibiae of the tibia ( tibia ) |
| function |
| Thigh ligament tensioner (stabilization of the extended knee), flexion of the hip joint , inward rotation ( internal rotation ) and splaying ( abduction ) of the thigh, flexion of the knee joint |
| Innervation |
| Superior gluteus nerve |
| Spinal segments |
| L4-L5 |
The flat, rectangular tensor fasciae latae muscle ( Latin for thigh ligament tensioner or thigh ligament tensioner ) is a skeletal muscle of the lower extremity , more precisely the rear ( dorsal ) layer of the posterior hip muscles. Historically, it represents a splitting off of the central gluteus muscle ( gluteus medius muscle ).
course
The thigh ligament tensioner arises on the iliac bone ( os ilium ), more precisely from the anterior upper iliac spine ( spina iliaca anterior superior ) and radiates into a stripe-shaped reinforcement ( tractus iliotibialis or Maisiatscher stripe) of the muscle ligament ( fascia ) of the thigh ( fascia lata ).
With this reinforcement strip, the muscle attaches between the patella ligament ( ligamentum patellae ) and the head of the fibula ( caput fibulae ) to the lateral knot ( condyle ) of the shinbone ( tibia ) ( condyle lateralis tibiae ).
function
The ligament tensioner is not a very strong muscle . Mainly it tensions the fascia lata and its reinforcing strips (support of the tension belt).
The muscle also plays a role in flexion in the knee joint . When the knee is extended, the pull of the muscle has a stabilizing effect.
Because of its location above the diffraction or stretching axis it is - in spite of its small physiological cross-section - a powerful flexors ( flexor ) in the hip joint and for example, sprinters pronounced strong. Furthermore, the muscle can support an inward rotation ( internal rotation ) and spreading movement ( abduction ) of the thigh bone .
See also
literature
- Dieter Sasse: Compact Textbook Anatomy , Volume 2, Schattauer Verlag, 2004, ISBN 978-3-7945-2062-6 , p. 137.
- Franz-Viktor Salomon: muscle tissue . In: Anatomy for veterinary medicine . Enke Stuttgart, 2nd ext. Ed. 2008, pp. 147-234. ISBN 978-3-8304-1075-1