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

Pain behind the knee commonly refers from gastrocnemius, popliteus and the hamstrings. Identifying which muscle reproduces the patient's familiar pain on palpation guides treatment and often produces meaningful change alongside standard care.

Gastrocnemius — Posterior knee crease and instep arch — common cause of nocturnal calf cramps.

Biceps Femoris — Posterior knee crease and lateral hamstring pain.

Popliteus — Posterior knee pain that worsens with stairs or squatting.

Plantaris — Pain behind the knee spreading into the upper half of the calf.

Semitendinosus — Buttock and posteromedial thigh pain.

Semimembranosus — Posterior knee and ischial pain.

Soleus — Heel, Achilles area and sacroiliac region — a classic 'low back' referral.

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 Gastrocnemius, Biceps Femoris and Popliteus.

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.