Also called: Hip flexor strain; iliopsoas tendinopathy
Exercise strongly helps
Strength
Stretch
Massage
A pull or ache at the front of the hip, often after sprinting, kicking or a sudden increase in training. The iliopsoas is overloaded - usually a muscle already held short by sitting and never loaded through its full range.
How common: Common in runners, cyclists, dancers and anyone who sits for long hours then sprints
What it is
The iliopsoas is the main hip flexor, running from the lumbar spine and the inside of the pelvis to the top of the thigh bone. It is powerful, it crosses several joints, and in most adults it spends the day shortened by sitting and is never deliberately trained.
That combination is the setup. A muscle habitually short and never loaded at length is then asked for a sprint, a kick or a sudden change of direction, and it fails. The same mechanism produces a chronic tendinopathy where the load is repetitive rather than sudden.
What it feels like
- Pain or a pulling sensation deep at the front of the hip or in the groin
- Worse lifting the knee against resistance, sprinting or kicking
- Worse getting out of a car and rolling over in bed
- Tightness at the front of the hip after prolonged sitting
- Sometimes a snapping sensation alongside the pain
What causes it
Most people have more than one of these at once, and they feed each other. Read the
list looking for the two or three that sound like your week rather than for the one
true answer — the ones that describe you are the ones worth acting on.
- Iliopsoas overload
- The muscle is asked for high force in a lengthened position - the end of a sprint stride, a kick, a sudden deceleration - beyond what its current capacity allows.
- Shortening from prolonged sitting
- Hours a day at ninety degrees of hip flexion adapts the muscle to a short length. It then has less usable range and less tolerance at length, which is where the injuries happen.
- Never being trained through range
- The hip flexors are among the least deliberately trained muscles in the body. Almost nothing in a normal training programme loads them at long lengths.
- A sudden increase in sprinting or kicking
- The classic precipitant. Preseason, a return to running, or a new sport asks for a demand the muscle has not seen.
- Weak glutes
- When the glutes under-contribute, the hip flexors work harder to control the pelvis and the hip through each stride, arriving at high-demand moments already loaded.
- An anteriorly tilted pelvis
- A forward-tipped pelvis holds the hip flexors short and changes the angle at which they work, reducing their effective range.
- Hip joint pathology underneath
- The iliopsoas sits directly in front of the hip joint. Impingement and labral problems commonly produce secondary iliopsoas overactivity and tenderness, so front-of-hip pain that will not settle deserves a look at the joint.
- Lumbar spine involvement
- The psoas attaches to the lumbar vertebrae, so back problems and hip flexor symptoms travel together in both directions.
- Returning to sport too early after a strain
- As with any muscle strain, returning before strength at length is restored is the main route to a recurrence.
Who tends to get it
- Sprinters, footballers and anyone in a kicking sport
- Desk workers who then train hard, which is a very common combination
- Dancers and gymnasts, who load the hip flexors at extremes of range
- Anyone with weak glutes or an anteriorly tilted pelvis
- People increasing running or sprinting volume quickly
What makes it worse, and what settles it
Makes it worse
- Sprinting and kicking before the muscle has capacity at length
- Long periods sitting, which shorten it further
- Aggressive stretching of an acutely strained muscle
- Doing only stretching and never loading, which is the usual response
- Continuing training volume unchanged through a low-grade ache
Settles it
- Loading the hip flexors through range - not just stretching them - which is the treatment most people never try
- Hip flexor stretching done properly, with the pelvis tucked rather than the back arched
- Gluteal strengthening so the hip flexors are not compensating
- Reducing sprinting and kicking volume temporarily while capacity is rebuilt
- Massage of the psoas and rectus femoris for symptomatic relief
What actually helps
The short version: Iliopsoas overload, often in a muscle already held short by sitting and never loaded through range
Strength work: Hips: Flexors; Hips: Flexors: Psoas; Hips: Flexors: Iliacus; Glutes: Max - loaded hip flexion through range, not just stretching
Stretching: Hips: Flexors; Legs: Quads
Massage: Hips: Psoas; Hips: Iliacus; Hips: TFL
Also worth doing: Reduce sprinting and high-knee volume while irritable
What the evidence says: Stretching alone usually fails here. A short hip flexor that hurts needs loading through range, not more stretching.
The names above are the Targets qFIT tracks —
the Muscle Guide explains what each one does, and
Quick Add switches on the Exercises you
already have.
The qFIT routine for this
Ready-made routineHip Relief & Rotation
qFIT already has this one built. It runs massage first, then stretching, then
strength — the order that works on a body that is already sore — and every
activity in it carries the reason it is there.
The button below opens your Checklist with this routine already selected, so instead
of your whole list you land on just its Categories, Targets
and Exercises, each with its checkbox, ready to tick as you work through
them.
Have more than one problem? Tick yours under My Problems on
My Profile and your Checklist's Routine list gains
Recommended for my problems — every routine for the problems you picked, merged
into one. Your picks stay private; that filter is the only thing they feed.
Get it checked if…
Groin pain with a limp in an adolescent, or after a fall in an older adult, needs imaging
And whatever the body part: chest pain or unusual breathlessness on
exertion; a fever alongside the pain; unexplained weight loss; pain that is constant and
unrelated to how you move; new numbness, weakness or loss of bladder or bowel control; or
one calf that is swollen, warm and painful. Any of those, stop and get assessed.
How it usually goes
Acute strains settle in two to six weeks and tendinopathy takes longer - three to six months of progressive loading is realistic. The key change for most people is training the muscle rather than only stretching it, which is unusual advice for a hip flexor and is what makes the difference. Front-of-hip pain that does not respond, or that comes with deep groin pain and catching, is worth assessing for a hip joint cause underneath it.
Prevalence basis: Sports medicine series
Others the same routine covers
These share the Hip Relief & Rotation routine, so the work is the same. If one of them also
sounds like you, that is a reason to expect more from it, not less.
This is general information, not a diagnosis, and it cannot examine you.
If it matches you, use it to ask better questions of a clinician rather than to replace one.