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What is psoas syndrome?

Author

Emily Sparks

Published Jan 07, 2026

Psoas syndrome is an uncommon, and often misdiagnosed, condition that can appear as refractory lower back pain (pain that stays even after treatment) accompanied by other symptoms. The condition occurs when the psoas muscle—the long muscle (up to 16 inches) in your back—is injured.

What are the symptoms of psoas syndrome?

What Are the Symptoms of Psoas Syndrome?

  • Lower back pain.
  • Pain in your pelvis.
  • Pain radiating down to your knee.
  • Difficulty walking — including limping or shuffling.
  • Difficulty maintaining a fully upright position.

Does psoas syndrome go away?

Psoas syndrome is an uncommon condition that can be mistaken for iliopsoas bursitis because it causes similar symptoms. An injury to the psoas muscle can take several weeks to heal. Typical recovery times range between 6 to 8 weeks. Often, people will have physical therapy, take medications, and ice the injury.

What does a psoas injury feel like?

A 1985 paper in the British Medical Journal describes the classic symptoms of an iliopsoas injury: pain deep in the abdomen or upper groin area, tenderness when pushing on the muscle or tendon with your hands, and pain when you attempt to flex your hip against resistance.

What causes psoas syndrome?

The cause of psoas syndrome may be due to various diagnoses, including osteoarthritis, rheumatoid arthritis, idiopathic, injury, overuse, and postoperatively following hip replacement. The history and physical exam may reveal that the patient has psoas syndrome.

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How do you fix psoas syndrome?

Psoas syndrome is best treated with physical exercises. These are often demonstrated by a doctor or physical therapist in the outpatient office and done at home. These exercises will include active and passive spine, hip joints, and psoas muscles manipulation and stretching.

Where is psoas pain?

Psoas syndrome is a rare and often misdiagnosed condition that happens when the psoas muscle in your back is either tight or in spasm. The psoas muscle connects your lumbar spine (lower back) to your hip joint. It's a very long muscle that extends from your lower spine, down through your pelvis to your leg.

Does the psoas muscle affect the bladder?

Because of this, a tight psoas can cause seemingly unrelated symptoms including: back pain, leg pain, hip pain, bladder pain, pelvic pain, and digestive issues. It can also contribute to PMS symptoms.

How do you stretch the psoas while sleeping?

If you are able, sleep on your back with a pillow under your knees to place your body in optimum position. Stretching is straight forward enough, but foam rolling/mobilizing with a lacrosse ball can do wonders to release a tight psoas.

Can psoas cause rib pain?

A tight psoas muscle can cause rib thrusting, where you push your rib cage forward usually arching your back. This causes quick, shallow, chest breathing. It also limits the amount of oxygen taken in and may cause over usage of neck muscles.

How do you rehab iliopsoas?

Lunges (iliopsoas stretch): Stand straight with your feet hip-width distance apart. Step forward and anchor on the front foot and bend the back knee towards the floor. Keep your back straight and maintain both knees around 90 degrees. Do not let the front knee move forwards past your toes.

Can a tight psoas cause erectile dysfunction?

Psoas muscle volume is correlated with sexual activity and erectile dysfunction among patients with localised prostate cancer. Andrologia.

How do you test for psoas syndrome?

"Iliopsoas test": resisted hip flexion, with the hip in external rotation (performed with patient in a supine position). Any weakness and/or pain symptoms is a positive test.

What doctor treats the psoas muscle?

When the tendon becomes tight and inflamed leading to painful symptoms, it is commonly referred to as psoas tendinitis or impingement. Dr. Jervis Yau, orthopedic hip specialist, is highly experienced at treating psoas impingement, as well as an associated condition known as iliopsoas bursitis.

Is walking good for psoas muscle?

Walking is a more natural type of exercise to strengthen the psoas, because walking does both actions: hip flexion and trunk rotation. Jogging is even better.

Is walking good for tight hip flexors?

' Walking is good for the hip flexors, but to run far more efficiently (and, crucially, without pain), strategically opening and also strengthening your hip flexors needs to be part of your running routine.

Can a tight psoas cause incontinence?

Bettis points out that in conjunction with supporting the pelvic floor, the psoas muscle also plays a role in incontinence and can be strengthened to help with incontinence issues, balancing out overuse and underuse throughout the pelvic girdle. It also plays a role in pelvic pain during intimacy.

Can tight hip flexors cause frequent urination?

The Pudendal nerve crosses over the obturator internus. If your OI is tight and inflamed it will trap the pudendal nerve causing shooting pain into your groin along with increased urinary frequency.

Can tight psoas cause gas?

The literature also confirmed that a tight psoas muscle stretch's over the lower abdomen causing pressure on that area which can result in bloating and abdominal pain.

Can psoas cause flank pain?

Psoas syndrome is a pain condition caused by injury to the psoas musculature that may have associated spasms and specific somatic dysfunctions (SD). The syndrome is likely underdiagnosed and should be considered as a differential for low back or flank pain radiating to the groin.

What happens when the psoas is weak?

Signs of a weak psoas may include low back pain, pain in the front of the hip, tight/overworked hamstrings, knee pain, and/or sway back. Difficulty lifting and keeping your knee above hip height while standing upright may also signify a weak psoas.

Can psoas cause sciatica?

The psoas muscle may also contract if the back becomes misaligned. Usually, misalignment in the back leads to the patient leaning more toward one side of the body than the other. Naturally, this causes muscle contraction and may co-occur with other back problems, such as sciatica or bulging discs.

Do tight hips affect erections?

Erectile dysfunction is then usually caused by blood flow being disrupted, slowed or hindered throughout the body. Back issues can cause ED when veins and nerves are pinched, leading to less blood flow to the pelvic area. Several causes of back pain that can cause ED include: Tight Hip Flexors.

How do I get rid of iliopsoas pain?

Traditionally the initial treatment of iliopsoas bursitis includes rest, stretching of the hip flexor muscles, strengthening exercises of the hip rotators and physical therapy. Generally successful stretching exercises to alleviate or ease the symptoms are the ones involving a hip extension, done for 6 to 8 weeks.