If the front of your hip pulls, grabs or aches when you sprint, kick or change direction, you may be dealing with a hip flexor strain. It is a common problem through the football and running season, and knowing what it is helps you make sensible choices about how to settle it.
A common instinct is to stretch it harder, but for many strains that is not the fix and can make a higher-grade strain feel worse. Here is what a hip flexor strain is, why it happens, what tends to help, and when it is worth seeing a physio.
In this article
What is a hip flexor strain?
A hip flexor strain is an injury to the muscles at the front of the hip that lift your thigh towards your body. The two most commonly involved are the rectus femoris, which runs down the front of the thigh, and the iliopsoas, which sits deeper and connects your spine and pelvis to the top of the thigh bone.
When one of these muscles is overloaded or stretched too quickly, some of its fibres can be strained. This is why the pain is usually felt at the front of the hip or the top of the thigh, and why it tends to flare with the very movements these muscles power, such as sprinting and kicking.
The rectus femoris
The rectus femoris is the most commonly injured of the quadriceps muscles, and hip flexor strains are typically linked to kicking, sprinting and sudden changes of direction.
What causes a hip flexor strain?
Hip flexor strains are typically linked to fast, forceful movements of the hip. Common contributors include:
- Kicking, which loads the rectus femoris rapidly
- Sprinting and accelerating, especially early in a session or when fatigued
- Sudden changes of direction and stopping quickly
- A jump in training load, common at the start of the winter football and running season
Because these are the movements the hip flexors drive, football codes and running are common settings for this injury, particularly when the workload ramps up quickly.
What does a hip flexor strain feel like?
The typical picture is pain at the front of the hip or the top of the thigh that comes on with hip flexor activity. People often describe:
- A sharp pull or grab at the front of the hip when sprinting or kicking
- Aching at the front of the hip after activity
- Discomfort when lifting the knee towards the chest, especially against resistance
- Tenderness at the front of the hip
Symptoms are often worse with the exact movements that provoked them and ease with relative rest. It is worth remembering that front-of-hip pain is distinct from groin or adductor pain on the inside of the thigh, and telling them apart helps guide the right plan.
Should I just stretch it out?
It is a common instinct to stretch a strained muscle harder, but for a hip flexor strain that is often not the fix. Passive stretching alone does not rebuild the strength and load tolerance a strained muscle needs, and pushing into an aggressive stretch can aggravate a higher-grade strain.
Gentle movement within comfort has its place, but the muscle usually needs to be reloaded gradually rather than simply pulled on. This is where a structured plan makes the difference.
What actually helps a hip flexor strain?
Recovery is usually guided by progressive loading rather than passive stretching alone. A criteria-based approach, where you progress as the muscle tolerates each stage, is well supported for rectus femoris strains. A typical plan includes:
- Settling the early irritation and modifying the movements that flare it
- Reintroducing gentle hip flexor loading within comfort
- Progressively building strength and load tolerance in the muscle
- Rebuilding speed, kicking and change-of-direction work in stages before a full return to sport
Progressing by how the muscle responds, rather than rushing back, gives the strain the best chance to settle and lowers the risk of it returning.
When should you see a physio?
Consider getting assessed if
You have front-of-hip or upper-thigh pain that flares with sprinting or kicking, pain that is limiting your training or return to sport, or a strain that is not settling with rest. A physiotherapist can confirm what is involved, rule out other causes, and build a progressive loading plan matched to your stage and your sport.
The Quick Guide
A one-page summary you can save or print. Tap the image or the button to download the free PDF.
Helping You Perform at Your Best
At ACE Sports Medicine in Upper Mount Gravatt, our physiotherapists provide personalised care for hip flexor strains and front-of-hip pain for people across Brisbane's southside. Your first appointment includes an assessment and a progressive loading plan matched to your starting point and your sport.