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  2. Lordosis - Wikipedia

    en.wikipedia.org/wiki/Lordosis

    Imbalances in muscle strength and length are one cause of this excessive stress to the lower back, such as weak hamstrings and tight hip flexors (psoai). [citation needed] A major feature of lumbar hyperlordosis is a forward pelvic tilt, resulting in the pelvis resting on top of the thighs. Other health conditions and disorders can cause ...

  3. Low back pain - Wikipedia

    en.wikipedia.org/wiki/Low_back_pain

    Low back pain or lumbago is a common disorder involving the muscles, nerves, and bones of the back, in between the lower edge of the ribs and the lower fold of the buttocks. Pain can vary from a dull constant ache to a sudden sharp feeling. [ 4 ]

  4. Quadratus lumborum muscle - Wikipedia

    en.wikipedia.org/wiki/Quadratus_lumborum_muscle

    Contraction of one of the pair of muscles causes lateral flexion of the lumbar spine, elevation of the pelvis, or both. Contraction of both causes extension of the lumbar spine. A disorder of the quadratus lumborum muscles is pain due to muscle fatigue from constant contraction due to prolonged sitting, such as at a computer or in a car. [1]

  5. Sacroiliac joint dysfunction - Wikipedia

    en.wikipedia.org/wiki/Sacroiliac_joint_dysfunction

    In the early 1900s, dysfunction of the sacroiliac joint was a common diagnosis associated with low back and sciatic nerve pain. [18] However, research by Danforth and Wilson in 1925 concluded that the sacroiliac joint could not cause sciatic nerve pain because the joint does not have a canal in which the nerves can be entrapped against the ...

  6. Iliocostal friction syndrome - Wikipedia

    en.wikipedia.org/wiki/Iliocostal_friction_syndrome

    Iliocostal friction syndrome, also known as costoiliac impingement syndrome, is a condition in which the costal margin comes in contact with the iliac crest.The condition presents as low back pain which may radiate to other surrounding areas as a result of irritated nerve, tendon, and muscle structures.

  7. Aching back? These are the 15 best lower-back stretches for ...

    www.aol.com/news/aching-back-11-best-lower...

    Lower back stretches can relieve pain and soothe tight muscles. Try these 15 low back stretches at home for back pain relief and to reduce stress and tension.