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  2. Rigid spine syndrome - Wikipedia

    en.wikipedia.org/wiki/Rigid_spine_syndrome

    Rigid spine syndrome, also known as congenital muscular dystrophy with rigidity of the spine (CMARS), is a rare and often debilitating neuromuscular disorder. It is characterized by progressive muscle stiffness and rigidity, particularly in the spine, which can severely limit mobility and impact quality of life. This condition is typically ...

  3. Sacroiliac joint dysfunction - Wikipedia

    en.wikipedia.org/wiki/Sacroiliac_joint_dysfunction

    Muscles and ligaments surround and attach to the SI joint in the front and back, primarily on the ilial or sacral surfaces. These can all be a source of pain and inflammation if the SI joint is dysfunctional. [9] [2] The sacroiliac joint is highly dependent on its strong ligamentous structure for support and stability. [9]

  4. Sciatica - Wikipedia

    en.wikipedia.org/wiki/Sciatica

    Severe back pain extending to the hips and feet, loss of bladder or bowel control, or muscle weakness may result from spinal tumors or cauda equina syndrome. [15] Trauma to the spine, such as from a car accident or hard fall onto the heel or buttocks, may also lead to sciatica. [ 15 ]

  5. Sciatic nerve - Wikipedia

    en.wikipedia.org/wiki/Sciatic_nerve

    The sciatic nerve has no cutaneous branches for the thigh. This nerve provides the connection to the nervous system for the skin of the lateral leg and the whole foot, the muscles of the back of the thigh, and those of the leg and foot. It is derived from spinal nerves L4 to S3.

  6. Stiff-person syndrome - Wikipedia

    en.wikipedia.org/wiki/Stiff-person_syndrome

    Eventually, rigidified muscles reduce the affected person's range of motion, slow their voluntary movements, and may cause them to have abnormal posture, particularly lumbar hyperlordosis (a distinctive curve in the lower back). [6] Rigid trunk muscles can also prevent the chest and abdomen from expanding, causing shortness of breath and early ...

  7. Posterior compartment of thigh - Wikipedia

    en.wikipedia.org/wiki/Posterior_compartment_of_thigh

    biceps femoris muscle, which consists of a short head and a long head. semitendinosus muscle; semimembranosus muscle; These muscles (or their tendons) apart from the short head of the biceps femoris, are commonly known as the hamstrings. The depression at the back of the knee, or kneepit is the popliteal fossa, colloquially called the ham. The ...

  8. ‘My Low Back Pain Turned Out To Be A Rare Inflammatory ...

    www.aol.com/low-back-pain-turned-rare-120000344.html

    Around the time that I was diagnosed with ankylosing spondylitis, my doctor thought that I also had fibromyalgia, which involves widespread musculoskeletal pain accompanied by fatigue, sleep ...

  9. Hypertonia - Wikipedia

    en.wikipedia.org/wiki/Hypertonia

    Spastic hypertonia involves uncontrollable muscle spasms, stiffening or straightening out of muscles, shock-like contractions of all or part of a group of muscles, and abnormal muscle tone. It is seen in disorders such as cerebral palsy, stroke, and spinal cord injury. Rigidity is a severe state of hypertonia where muscle resistance occurs ...