Body Of Fire - Body Of Fire
Plays a minor role in limiting movements, hip.
In normal alignment position, is in moderate tension and femoral insertion occupies in the background, the middle position.
Depending on the type of motion (flexion, extension, etc.) Acquire a different position, but within the acetabulum transfused.
Coaptation and FACTORS JOINT STABILIZATION
Because the acetabulum is hemispherical, the junction with the femoral head is not consistent enough so that the link is perfect, since there is what is called in mechanics a mating pair. This is solved by the acetabulum rim, which provides greater depth to the acetabulum and the capsule orbicular zone, which encircles the neck. These two formations are going to create the mating pair.
The role of ligaments in the joint coaptation depends on the position of the subject:
Subject bullet in normal alignment or extension. Being the tight ligaments will be a good coaptation.
Subject bullet in flexion. Being relaxed ligaments, are a joint position unstable.
bullet If we add to the adduction flexion (sitting position with legs crossed) will be unstable, so a low current shock on the axis of the femur, provoked a posterior dislocation of the hip.
The role of muscles in joint stability depends on the direction of them:
Transverse Direction vignette, reinforcing stability.
* Pelvi-trochanteric muscles
* Buttocks, especially the smaller and medium fasteners are called the hip muscles.
bullet Machine Direction
* Adductor muscles tend to dislocate the femoral head above the cup.
Orientation of the femoral neck
Greatly involved in the stability of the hip, whether this approach is seen in the frontal plane and in the horizontal plane.
bullet Frontal plane
* The coxa valga promotes pathological dislocation of the hip due to the opening angle.
* The position of abduction, action will be favorable to the stabilization of a malformed hip.
bullet horizontal plane
* The anteversion of the neck (the neck is more forward facing due to increased declination angle) promotes pathological dislocation.
* The retroversion of the femoral neck is a stabilizing factor.
* The internal rotation is a stabilizing factor of the joint.
MUSCLES OF THE HIP
Before seeing the players muscles of each movement, we must take into account that in the front of the joint, the muscles are few, but the ligaments are very strong, however in the back there is a remarkable muscle predominance.
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