The psoas and iliacus don't need more range. They need to learn to relax. That's a different mechanism, and it's the missing piece behind stretches that never quite hold.
Stretching lengthens the muscle. Prolonged pressure releases the tension.
Most people don’t know they have an iliacus. Over 90% are tight there. It sits on the inside of the pelvic bone, and releasing it takes angular pressure through rotation. Static tools can’t produce that angle. The Hip Hook™ was designed to.
And if you want your psoas to relax, it won't unless the iliacus is released too.
The Hip Hook
- Reaches both hip flexors, the psoas and the iliacus
- Holds prolonged pressure for 90 seconds, the way a physical therapist would by hand
- The free app helps you set the pressure that is right for you
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What a tight psoas & iliacus needs to relax
The muscles most stretches don't reach the way you think
The iliacus sits on the inside of the pelvic bone. Reaching it means coming in at an angle and rotating, which a foam roller, a static tool, or a massage gun can’t do by shape. The Hip Hook’s tip reproduces what a physical therapist’s thumb does, and you control the pressure the whole way. A stretch lengthens both muscles. What it doesn't do is teach them to release the resting tension they hold every step, every hour of sitting, every night of sleep.
25 years to get the angle right
The tip shape, the height, the angle, the way pressure builds. Every dimension came out of 25 years of clinical practice and thousands of patients. Christine built the Hip Hook to reproduce what her thumb was already doing. Trying to copy the shape isn’t the same.
Tension doesn't stretch out. Flexibility isn't the same as release.
A muscle can be perfectly flexible and still hold tension at rest. That resting tension is what makes the hip feel tight even when you've stretched. Only sustained pressure, held long enough for the nervous system to hear it, teaches the muscle to let go.
Why your hip flexor stretch doesn't fully release it
The couch stretch, the lunge, the runner's stretch. They all work the same muscles the same way. They put the psoas and iliacus into a lengthened position and hold. That is real, useful work. It builds flexibility.
What a stretch doesn't do is teach the muscle to release. A muscle can be perfectly flexible and still hold tension at rest, which is why the tightness feels good in the stretch and then comes back an hour later.
Stretching also asks something of the muscle you already have. Prolonged pressure sends a different signal. Hold it in one place long enough, and the muscle actually lets go. That is the mechanism most stretch routines are missing.
Keep stretching. It has its place. But if your hip flexors have felt tight for months, the missing piece is probably the release, not another rep.
Head-to-head: stretching vs release
In a randomized controlled trial with 25 participants who had chronic lower back pain, one group did hip flexor stretches. The other group used the Hip Hook. Both groups practiced three times a week for four weeks.
After four weeks, the Hip Hook group reported 19% more pain relief than the group doing stretches alone. And the stretching group's physical activity declined significantly over the four weeks, while the Hip Hook group maintained their baseline.
That's the honest comparison. Stretching is worth doing. It just isn't doing what release does, and the study shows the difference.
*In a randomized controlled trial of 25 participants with chronic lower back pain. Hip Hook users were compared to participants performing hip flexor stretches. Results may vary.
Measured hip flexor release
*External studies and self-reported outcomes show that the Hip Hook (Mark) reduces pain, eases tension, improves sleep, and provides long-lasting results. Results may vary.
How this compares
- Foam rollers — increase circulation, provide temporary relief. Rolling motion doesn't allow sustained pressure long enough for the muscle to relax.
- Massage / percussion guns — introduce vibration, which prevents the sustained pressure needed for muscle release.
- Lacrosse / therapy balls — round shape can't hook into the iliac fossa to access the iliacus.
- Stretching — lengthens the muscle; builds flexibility. Doesn't teach the muscle to release the resting tension it holds every step.
- Hip Hook — sustained pressure on the psoas and iliacus. Signals the deep hip flexors to release. Ninety seconds per position.
Hip flexor tension can lead to pain
Tight Hip Flexors Can Affect Your Entire Body
When the iliacus, psoas, and hip rotators like the piriformis are tight, it tips and twists the pelvis and creates a ripple effect of pain and alignment issues through the hips, spine, and lower body.
- Pulls your pelvis forward
- Strains the SI joint
- Compresses the hip joint
- Twists the lower back
- Rotates your leg inward
- Strains the inside and compresses the outside of the knee
- Moves the patella laterally
- Overpronates the foot
- Strains the big toe
Signs that you have a tight hip flexor
Iliacus and psoas tension affects how the muscles and joints around the hip work.
- Hip joint pinching and grinding
- Hamstring flexibilty limitations
- Opposing glute weakness
- Glute and piriformis tension
- Leg rotates outward when you are lying on your back
- Decreased stride length
- Tenderness to touch on the front of hip
- Clicking and popping in the hip with motion
- Positive supine to sit test
Could this be your pattern?
The muscle tension explained
Everything You've Tried Works Better After This.
Physical Therapy. Chiropractic. Massage. Stretching. Strengthening. They all have value, but none of them release the chronic muscle tension that may be driving your pain. When tension in deep, overlooked hip flexor muscles is resolved first, everything else finally works the way it should. That's the piece that's been missing.
CLICK ON A DOT TO LEARN ABOUT HOW HIP TIGHTNESS SHOWS UP AS PAIN
Take the Tension AssessmentThe Hip Hook vs. Everything Else
| Feature | Hip Hook | Foam Roller | Massage Gun | Stretching |
|---|---|---|---|---|
| Reaches the Psoas Muscle | ✓Yes | ✗Too bulky | ✗Can't reach deep hip flexors | ✓Yes |
| Reaches the Iliacus Muscle | ✓Yes | ✗Too bulky | ✗Can't reach deep hip flexors | ✗No |
| Applies Sustained Pressure | ✓Yes | ✓Yes | ✗Percussion is not the same | ✗Different than pressure |
| Uses Angled Rotation | ✓Yes | ✗No | ✗No | ✗No |
Their Pain Was Real. So Are Their Results.
Your Personal PT, in Your Pocket
Included: Free companion app
The free Aletha app was designed by a physical therapist to guide you through every release session. It shows you exactly where to place the Hip Hook, how much pressure to apply, and times your 90-second release automatically. You’ll never wonder if you’re doing it right.
*iOS (iphone Compatible Only)
Your Complete System, Orbit included
Start Gentle
More isn’t better. Start with the Orbit at the height that lets you breathe. Move to the Hip Hook against a wall, which is more precise than most hands-on work. Then work down to the floor. The app times each hold and tells you when you’re ready for more.
$29 value included free
Stretching, strengthening, and mobility all work better on a muscle that has already released. That's the sequence most routines get backwards.
Focus on what matters.
The Right Muscles
The iliopsoas complex (psoas & iliacus, commonly known as the hip flexors) contribute to tension in the back of the hip (piriformis & glutes) and drive the biggest ripple effects on alignment and pain up and down the body.
The Right Tools
Sustained prolonged pressure signals the nervous system to release. The Hip Hook is engineered by a physical therapist to mimic the precision of her hands, bringing professional-grade care into your home.
In the Right Sequence
Release comes first. Then alignment returns and pain fades. Only after that can stretching, strengthening, and recovery truly work. The method is simple and repeatable.
Meet the Founder
The clinician behind every Aletha tool
Christine Annie (Koth), MPT
Licensed Physical Therapist, author of Tight Hip, Twisted Core, biomechanist, and inventor
Christine didn't set out to build a wellness brand. She set out to solve a problem she kept seeing in her clinic.
Over 25 years of physical therapy practice, one pattern repeated itself. Patients arrived after they'd tried everything; PT, chiropractors, massage, stretching, strengthening, injections. They were diligent. They were exhausted. And they still weren't getting better.
What most practitioners were missing was chronic tension in certain key muscles, like the iliacus, that no foam roller or massage gun could reach. Christine could release it with her fingers. It worked. But there was a limit to how many hands she had, how many hours in a day, and how consistently a patient could access that kind of hands-on care.
So she designed the Hip Hook to replace her fingers.
Every tool in the Aletha line followed the same logic: take a hands-on clinical technique most people will never get enough of, and build a device that lets them do it themselves, at home, as often as their body needs it.
That's the through-line of this company. Not a trend. A clinician who got tired of watching people suffer inside a system that kept missing the same thing and decided to build the tools the system wasn't going to build on its own.