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Hip Flexor Pain

A male runner in his 30s stands on a track, grimacing. He clutches his left hip flexor area with his left hand, just below his hip bone, where a sharp pain has stopped him mid-stride. His right hand is on his right hip. Dressed in standard running gear—a breathable tech t-shirt and short running shorts—he leans over, trying to stretch the tight muscle. The pain is intense enough that it has completely halted his workout. The setting is an outdoor running track.
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Causes

Sitting for extended periods of time: When you sit for hours on end, your hip flexor muscles are stuck in a shortened position. Over time, this can lead to them becoming tight and stiff, often causing that familiar ache in the front of your hip when you finally stand up or try to extend your leg.

Leaning forward for an extended period: Whether you’re hunching over a desk, driving for a long stretch, or working in a forward-bent position, leaning forward keeps your hip flexors in a constantly engaged and shortened state. Muscles in a shortened position can cause fatigue and tension, leading to pain and discomfort in the hip flexor region.

Hip Flexor Pain 4-1 Adductor Brevis Adductor Longus
4-1 Adductor Brevis Adductor Longus

I Feel

Pain in the Groin Area During Activity

When you feel sharp pain deep in the groin area during activity, it’s often caused by stubborn muscle knots in your inner thigh muscles, the adductor brevis and longus. The discomfort usually focuses right where the thigh meets the pelvis, presenting as a deep, sharp, pulling pain that can sometimes run down the inner thigh. You’ll find the pain gets worse when you’re doing forceful activities like changing direction quickly (running cuts), kicking hard, or even just getting in and out of a car. Because these muscles are critical for hip stabilization, their knots can easily mimic other problems, such as adductor strains (groin pull) or even hip joint issues.

Hip Flexor Pain 4-2 Vastus Intermedius
4-2 Vastus Intermedius

I Feel

Pain in the Upper Thigh Area

That persistent deep ache in the upper thigh area is often referred pain coming from muscle knots in the deepest quad muscle, the vastus intermedius. The discomfort usually focuses deep beneath the other quad muscles, presenting as a deep, constant internal ache that runs straight down the middle of your thigh bone. You’ll find the pain gets worse when you’re doing activities like walking long distances, standing for hours, or pushing off forcefully when running. Because this muscle is so foundational, its chronic tightness can easily mimic deeper problems like bone stress or hip joint strain, making you feel profoundly unstable. The deep tissue in the center of your quad is often susceptible to pressure, and the muscle leaves your entire thigh feeling restricted and heavy, as if it’s constantly fatigued.

Hip Flexor Pain 4-3 Iliopsoas
4-3 Iliopsoas

I Feel

Pain in the Upper Thigh Area

When that bothersome pain hits the upper thigh area, the source is frequently deep-seated muscle knots in your primary hip flexor, the iliopsoas. The discomfort usually focuses deep in the front of the hip crease, presenting as a deep, pulsing ache that sometimes runs along the inner, upper part of your thigh. You’ll find the pain gets worse when you’re doing activities that heavily engage the hip flexor, like walking up inclines, doing sit-ups, or even just sitting for extended periods at a desk. Because the iliopsoas is so central to hip movement, its muscle knots can easily mimic deeper problems, such as hip joint arthritis or a labral tear.

Hip Flexor Pain 4-4 Abdominus Obliqui
4-4 Abdominus Obliqui

I Feel

Pain in the Upper Thigh Area

When that nagging ache hits the upper thigh area, the cause can sometimes be muscle knots in your side abdominal muscles, the abdominis obliqui (obliques). The discomfort usually focuses along the side of the hip bone and presents as a sharp, taut ache that can run along the top of the hip bone and down the upper thigh. You’ll find the pain gets worse when you’re doing rotational movements, like twisting to one side, getting out of bed, or carrying something heavy unevenly. Because the obliques help stabilize your torso, their knots can easily mimic deeper problems, such as hip flexor strains or sacroiliac (SI) joint issues. The side of your torso just above the hip is often extremely sensitive to pressure, and it leaves your core feeling tight and restricted, limiting your comfortable side-bending motion.