The word ‘crumble’ is used here instead of ‘pain in lower back’ because when the lower back pains, back is actually crumbled as your muscles do.
Generally, these muscles crumble more commonly as you get older. Nowadays, with poor lifestyle and luxurious decors which we feel comfortable does not help the real cause. The age criterion has shifted from 30-40 years to 15-30 years period for the lower back pains. Poor physical fitness, uncomfortable seater and wrong ergonomics usually lead to initial crumbling. As it goes, there are 1000 reasons for having low back pain and few culprits who initiates back issues checks in regularly with same crumbling patterns.
One of the main culprits is the Quadratus Lumborum (QL) muscle, as it develops same pain patterns, it is named as Quadratus Lumborum Syndrome.
The Quadratus lumborum is a muscle of the posterior abdominal wall. It is the deepest abdominal muscle and commonly grouped in lower back musculature. It is irregular and quadrilateral in shape and broader below than above.
The Quadratus Lumborum generally known as the ‘hip hiker’ muscle. It helps in rising and holding the hip which will let the legs do movement. It also acts as a supportive muscle in doing spinal extension. Forced breathing out takes place with the help of QL muscle.
The QL connects the pelvis to the spine and is therefore helps to curve lower back with the main spinal muscles. When the primary low back spinal muscles run in to weakness/ tiredness/partly inhibited (as they often are in the case of habitual seated computer use and/or the use of a lower back support in a chair). This mechanical disadvantage will lead to constant contraction while seated can overuse the QLs, resulting in muscle fatigue.