In daily life, an inadvertent movement (such as moving flowers, bending over, etc.) can cause a kind of low back pain. At this time, the patient may show pain in the lower back and have a strong sense of tightness, or the patient may be in a position. The pain is exacerbated by the conversion, sudden sneezing and other reasons. Many patients are always in pain when they come to the hospital. The doctors have increased pain after giving massage or physiotherapy to the back muscles. Many doctors explain that it will take a while to recover after a sprained psoas muscle.
In fact, if you think about it, if the waist sprain is just a simple lumbar muscle injury, then we will alleviate the symptoms after treating the psoas. But since the pain has not improved after treatment, we should change the way to consider where the waist sprain is twisted.
Muscle damage generally means that the muscle is strained and why the muscle is pulled.
The name of the injury is that the muscles are excessively stretched and injured. Muscle contraction is divided into eccentric contraction, centripetal contraction, and isometric contraction. Muscle strain is most related to the eccentric contraction of the muscle, because the process of eccentric contraction is the process of muscle elongation. If the muscle is suddenly subjected to a large force and its centrifugal contraction ability is poor, the muscle will be strain.
Why is the psoas muscle not easily pulled?
The lumbar muscles are located behind the spine. The position and attachment point determine the main role of the lumbar muscles: the bilateral lumbar muscles contract simultaneously to extend the trunk, while the unilateral lumbar muscle contraction is the lateral flexion of the trunk.
People often do a variety of actions:
1, the trunk extension action: such as stretched, playing badminton swing swing smash.
The lumbar muscles are in a state of centripetal contraction; at this time, the lumbar muscles are relatively stable and not easily injured. (At this time, if the psoas muscle contraction force is too large, or the morphological function of the lumbar intervertebral disc and the deep intervertebral soft tissue is abnormal, the lumbar pain may be caused by compression of the spinal nerve root due to excessive narrowing of the intervertebral foramen;)
2, the trunk is fixed vertically:
The waist muscles are in an isometric contraction state; at this time, the trunk itself is relatively stable, and the lumbar muscles are not easily injured; but long-term weight bearing (equal length contraction) may also cause muscle soreness and discomfort.
3, torso flexion (bend):
The waist muscles are in a state of eccentric contraction; at this time, if there is no obvious weight or the movement is not rapid, the lumbar muscles are not loaded, and the lumbar muscles are not easily injured; the normal person only has a considerable weight for a long time or the trunk is rapidly flexed, the lumbar muscles Excessive load in the eccentric contraction will produce a true "lumbar muscle strain".
However, such movements are not common in everyday life. Long-term back-ups, sudden bends and squats, or back-to-back objects that bend over and pick up something and some special actions may compound this requirement, but the rest are rare.
4, torso rotation (biased)
Torso rotation usually unilateral psoas muscle will be in a state of eccentric contraction, this rotation is likely to cause lumbar muscle strain, especially in the elderly in the swimming pool, the temperature difference makes the muscle more vulnerable to strain.
5, posture conversion
In the movements of the squatting, the sitting movement to the standing movement, the upper limb lifting movement, etc., the waist muscles are in the state of isometric contraction or centripetal contraction; as previously known, centripetal contraction or isometric The muscles in contraction are not easily damaged.
So, if it is not "lumbar muscle injury", what causes the patient to have symptoms of waist pain and limited mobility?
In these injuries, sometimes the eccentric contraction of the lumbar muscles, and most of the "centrifugal contraction" muscle groups are the abdominal muscle groups.
Abdominal muscles that grow in front of and around the torso: including the rectus abdominis, the external oblique muscles, the internal oblique muscles, and the transverse abdominis muscles. The "culprit" that causes the patient to have lumbar pain and limited mobility is the acute abdominal muscle pull and sprain.
The abdominal muscles are the pulls and sprains of the abdominal muscles during the eccentric contraction, which directly or indirectly cause the above symptoms.
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