04/14/2026
The Iliopsoas (often called “psoas”) — your deep hip flexor
The iliopsoas is actually two muscles working as one:
• Psoas major – runs from your lower spine (lumbar vertebrae)
• Iliacus – sits inside your pelvis
👉 They join together and attach to the top of your thigh bone (femur)
⸻
🔑 What it does (and why it matters)
This muscle is your primary hip flexor, meaning it:
• Lifts your leg up (walking, climbing stairs)
• Helps you get into a car
• Lets you raise your leg to put on pants
• Stabilizes your spine and pelvis when you stand or move
👉 Every step you take depends on it firing correctly.
⸻
⚠️ How it causes lower back pain
Because the psoas connects directly to your lumbar spine, it has a huge influence on your back.
When it becomes:
• Tight
• Shortened (from sitting a lot)
• Overworked or inflamed
…it can:
1. Pull your spine forward
This creates an excess arch (lordosis) in your lower back → compression → pain
2. Create constant tension on the lumbar discs
👉 Can contribute to disc irritation, sciatic symptoms, or chronic low back pain
3. Shut down glutes and core
When psoas is overactive, your body stops using:
• Glutes (hip stability)
• Deep core (spinal support)
👉 This imbalance leads to compensation and pain patterns
⸻
🚗 Why it’s hard to lift your leg
If your iliopsoas is tight, weak, or inhibited:
You may notice:
• Struggling to lift your leg into your car
• Difficulty putting on pants standing up
• Feeling like your leg is “heavy” or won’t come up smoothly
• Pain in the front of the hip or deep in the low back
👉 That’s because the iliopsoas is the muscle responsible for initiating that lift
If it’s not working right:
• Other muscles try to compensate (hip flexor group, low back)
• Movement becomes painful, stiff, or weak
⸻
🔥 Common signs your psoas is the problem
• Tightness deep in the front of the hip
• Lower back pain that doesn’t improve with basic massage
• Pain when standing up straight after sitting
• One side feels weaker when lifting your leg
• You feel better when slightly bent forward
⸻
🧠 Why most treatments miss it
Most massage therapists:
• Don’t go deep enough
• Avoid the anterior hip/abdominal area
• Only treat the back (where the pain shows up)
👉 But the cause is often in the front (iliopsoas)
⸻
💡 How it should be treated (what actually works)
Effective work usually includes:
• Targeted iliopsoas release (skilled, specific work)
• Active isolated stretching
• Muscle activation (to restore balance)
• Addressing hip + lumbar relationship
⸻
Bottom line
The iliopsoas is one of the most important—and most overlooked—muscles in the body.
👉 If it’s tight or dysfunctional:
• Your lower back will suffer
• Your movement will feel restricted
• Simple things like getting dressed or in a car become difficult
