Pilates Self-Care Saturday: Is Psoas Pain Always Tightness?

Kneeling lunge stretch demonstrating hip extension while highlighting iliopsoas and quadriceps muscle group.

Scrolling through social media recently I came across a statement that caught my attention. It suggested that psoas pain is not always caused by tightness and that the real issue might be pelvic lymphatic congestion. It also claimed that if fascia is dehydrated then stretching or releasing it simply pulls on the tissue rather than helping it. Statements like this often circulate widely online, so it seemed worth taking a closer look at what current science actually says.

The first part of the claim contains some truth. Pain in the front of the hip or deep in the abdominal region is often labelled as “tight psoas”, but the reality is more complicated. The iliopsoas muscle group connects the lumbar spine to the femur and sits close to several important structures including nerves, blood vessels and abdominal organs. Discomfort in this region may be linked to tendon irritation, hip joint issues, lumbar spine referral, or even nerve irritation from the lumbar plexus that runs through the psoas. In other words, assuming that every ache in this area comes from simple muscle tightness can be misleading.

Research in sports medicine describes several recognised causes of pain in the psoas region including iliopsoas tendinopathy and bursitis, particularly in people who perform repeated hip flexion movements such as runners, dancers or athletes.

The second idea in the social media post relates to lymphatic congestion in the pelvis. The lymphatic system is responsible for transporting fluid, immune cells and waste products through the body. It runs throughout connective tissues, including the fascial system. While lymph flow is influenced by movement, breathing and muscular contraction, there is currently limited clinical evidence that pelvic lymphatic congestion is a common cause of psoas pain. Most medical and orthopaedic literature does not list lymphatic congestion as a primary explanation for hip flexor pain.

Fascia itself has attracted growing research interest. It is not simply a passive wrapping around muscles but a dynamic connective tissue network involved in movement, force transmission and fluid balance. Some research suggests that fascia contains a hydrated matrix that allows layers of tissue to glide against one another. Hydration, movement and circulation all influence this behaviour.

However, the idea that fascia becomes “dehydrated” and that manual therapy rehydrates it is often overstated. Many researchers believe that the benefits of stretching or manual techniques come primarily from changes in the nervous system and muscle tone rather than from mechanically altering the structure of the fascia itself.

For Pilates teachers and movement professionals the practical lesson is fairly simple. Pain in the psoas region should not automatically be labelled as tightness. Equally, dramatic explanations found online should be approached with curiosity but also caution. The body is an integrated system where muscles, joints, nerves and connective tissues interact. Good assessment, thoughtful programming and gradual progression remain more reliable approaches than chasing fashionable explanations.

Sometimes social media posts are helpful prompts. They encourage us to pause, question and revisit what we think we know. Self-care, after all, is not only about stretching or exercise. It also includes learning how to filter information, understanding the body more clearly, and making decisions based on evidence rather than trends.

References: Physio-pedia. Iliopsoas Tendinopathy. 2023.https://www.physio-pedia.com/Iliopsoas_Tendinopathy

Slater A.M. et al. Fascia as a regulatory system in health and disease. Frontiers in Neurology. 2024.https://www.frontiersin.org/articles/10.3389/fneur.2024.1458385