Hip impingement (FAI): the pinch in the front of the hip on deep squats.

That sharp pinch or hard block in the front of your hip — right in the crease where your thigh meets your pelvis — when you drop into a deep squat, sink into a low chair, swing your legs out of the car, or pull your knee up toward your chest is one of the most recognizable hip complaints we see. Some people cup the side of the hip with a thumb-and-forefinger "C" to show where it hurts, a habit clinicians actually call the "c-sign." The clinical name for this front-of-hip pinch is femoroacetabular impingement, or FAI — hip impingement, in plainer words.

What's actually happening in the front of your hip

Your hip is a ball-and-socket joint: the round head of the thighbone sits in a cup in the pelvis, cushioned by cartilage and a rim of tissue called the labrum. Impingement means the ball and the rim are bumping into each other at the end of a movement instead of gliding smoothly. That collision happens most in deep hip flexion — squatting, sitting low, or bringing the knee to the chest — which is exactly when patients feel the pinch.

The pain is felt in the front or the groin crease, not the outer hip or the buttock, and it tends to be positional: it shows up at a specific depth and disappears when you back out of it. Over time, that repeated bumping can irritate or tear the labrum, which is why a front-of-hip pinch is worth taking seriously rather than squatting through.

Why does the front of my hip pinch when I squat?

In a lot of cases the joint anatomy is normal and the problem is mechanical: tight hip flexors and a stiff joint capsule pull the thighbone forward in the socket, so it runs out of clean room early and jams against the front rim. Weak, poorly-timed glutes make it worse, because they fail to center and control the ball as you descend. This is the version of hip impingement that responds well to hands-on care and better movement.

Squat mechanics matter too. Dropping straight down with the knees caved in and no hip hinge drives the thighbone into the front rim, while a stance and depth matched to your own hips often clears the pinch entirely. Before you assume the bone is the problem, it's worth ruling out the tissue and the pattern first.

Not every pinch in the front of the hip is a bone that needs a surgeon. A great many are a stiff joint, tight flexors, and lazy glutes running out of room — and that is exactly the kind of problem conservative care is built for.

Cam, pincer, and when it's the bone — not the tissue

Sometimes the shape of the joint itself is the driver, and honesty matters here. In cam impingement the ball of the thighbone isn't perfectly round and has an extra bump; in pincer impingement the socket rim covers too much of the ball. Either shape — and many people have a mix — physically reduces the room the joint has to move, and no amount of stretching changes the outline of a bone.

Structural, bone-shape FAI is diagnosed on imaging, usually X-ray or MRI, and it belongs in the hands of an orthopedic hip specialist to grade and, in the right cases, to correct. Cleveland Clinic's overview of femoroacetabular impingement lays out the cam and pincer types and the surgical options for the cases that need them. Dr. Andersen is a chiropractor (DC), not a surgeon — so when the exam points to a true bony block or a significant labral tear, our job is to say so and get you the right referral, not to stretch a bone shape that won't budge.

Why stretching into the pinch usually backfires

The instinct with a tight-feeling hip is to force more depth — sink lower, pull the knee harder into the chest, grind out the stretch. With impingement that's often the exact move that inflames the labrum, because you're driving the ball harder into the rim it's already colliding with. The hip feels "tight," but the limit is a mechanical block, not a short muscle.

Front-of-hip pain also gets blamed on the wrong structures. A tight, achy buttock can be piriformis-driven, deep pain that spans the hip and low back can be the SI joint, and an outer-hip ache that fatigues on one leg often traces to weak glute medius. Sorting the front-of-hip pinch from those neighbors is the first job of a proper exam — and if you're not sure what you're feeling, our pain locator is a good place to start.

Squat depth under load: lifters, CrossFit, and the barbell hip pinch

The pinch that only whispers under bodyweight can shout with a loaded barbell on your back. Among the recreational lifters and CrossFit athletes training around Cottleville, O'Fallon and St. Peters, a common story is a hip that feels fine on the walk to the rack and then jams at the bottom of a heavy back squat, a clean, or a wall ball. Load doesn't invent impingement out of nowhere, but it magnifies a joint that's already short on room — the ball meets the front rim sooner and harder when there's weight driving it down.

The answer is rarely a single "correct" depth everyone should hit. It's finding the depth, stance width, and toe angle your own hips actually allow, then owning that range with real strength. That's where sports chiropractic and exercise rehab overlap: free up the mechanical block first, then load the pattern back so the hip tolerates training volume instead of flaring at every attempt to go deeper.

Chasing the deepest possible squat you weren't built for is how a lot of this starts — a rounded, tucked pelvis at the very bottom trades a clean position for a few extra inches and drives the ball straight into the rim. A background in kinesiology is what lets Dr. Andersen read where a squat is fighting anatomy rather than effort, and adjust the lift instead of blaming the lifter.

How we evaluate and treat hip impingement at The Spine Studio

We start with an exam, not a protocol: how deep the pinch shows up, whether flexion-and-rotation reproduces it, how your glutes fire, and how your squat and gait load the joint. That's what tells us whether this looks like a mechanical, tissue-driven impingement we can help directly or a structural case that needs imaging and an orthopedic opinion first.

For the mechanical cases, conservative care works on three fronts at once. Precision Spinal Adjustments and joint work restore glide to a stiff hip and the segments above it; Pin & Stretch and Cupping & Scraping free up locked-down hip flexors and the front-of-joint tissue that pulls the ball forward; and Corrective Exercise Programming rebuilds glute strength and squat mechanics so the joint stops running out of room. Where a stubborn tendon or deep tissue is slow to settle, Shockwave Therapy is available as a $375 three-session package — the minimum recommended course for tissue repair. You can see how these fit together on our services page.

What to expect

Mechanical, tissue-driven impingement often turns a corner within a few weeks once the joint moves better, the flexors let go, and the glutes start doing their job. Structural cases move on a different, longer timeline and may involve a specialist — and knowing which one you have is the whole point of the exam. Either way, the honest first step is finding the source before you spend another month squatting into the pinch.