Iliosacral Pain: which trigger points cause it and how to treat them

Pain over the sacroiliac joint often refers from gluteus medius, gluteus maximus, multifidus and soleus. Identifying which muscle reproduces the patient's familiar pain on palpation guides treatment and often produces meaningful change alongside standard care.

Levator Ani — Deep aching pain in the pelvis, rectum, perineum and tailbone; sometimes referred to the low back or sacrum and provoked by prolonged sitting or bowel movements.

Coccygeus — Pain over the coccyx and lower sacrum, sometimes into the buttock, typically aggravated by sitting on hard surfaces and by moving from sitting to standing.

Gluteus Medius — Along the iliac crest, into the buttock, sacrum and posterior thigh — a common 'low back' pain pattern of muscular origin.

Quadratus Lumborum — Iliac crest, sacroiliac joint area, greater trochanter, sometimes lower abdominal pain. Often described as a deep, dull lumbar ache.

Gluteus Maximus — Buttock and sacroiliac region; tail-bone-like pain when sitting.

Multifidi — Local segmental pain, often felt as a 'spot' the patient can point to.

Iliopsoas — Anterior hip and groin, with vertical 'low back' pain along the lumbar spine.

Longissimus Thoracis — Buttock and lateral lower back pain, mimicking 'sciatica' but staying above the knee.

Iliocostalis Thoracis — Upward referral toward the upper back and shoulder blade, downward referral toward the lumbar region, and wrap-around pain over the lateral chest wall.

Iliocostalis Lumborum — Lower back pain along the iliac crest, sometimes wrapping to the lower abdomen.

Rectus Abdominis — Mid-back and lower-back pain, urinary urgency-like sensations, abdominal cramps.

Work the muscles in the order above. Treat one muscle fully — locate the taut band, hold sustained pressure until the ache eases, then take the muscle through its full range once — before moving to the next. Re-test the painful movement after each muscle so you can tell which one is actually driving the pattern: the muscles most often responsible here are Levator Ani, Coccygeus and Gluteus Medius.

If two or three muscles each give partial relief, that is the normal picture in a long-standing pattern; expect to revisit them over several sessions rather than resolving everything in one.

Myofascial referral is a pattern of muscular origin, and it behaves like one: pressure on a specific spot reproduces the familiar pain, the pain moves with load and position, and it eases after release and movement. Findings that do not behave that way belong to a different problem.

Seek assessment rather than self-treating when pain is constant and unchanged by position, wakes you at night without a mechanical trigger, follows a clear dermatome with numbness or weakness, or comes with fever, unexplained weight loss, or a recent significant injury. The same applies when four to six weeks of consistent self-care produces no change at all.