General Info

The hip flexors play a crucial role in posture, and with all movement. They are responsible for hip flexion, which involves raising the leg forwards.

The primary hip flexor muscles are the Psoas Major, extending from the lower vertebrae of the spine to the anterior top of the femur, and the Iliacus, connecting the pelvis to the femur.

Additionally, the Tensor Fasciae Latae (TFL), Rectus Femoris and Sartorius muscles also play roles in hip flexion.

Prolonged sitting, such as during desk work or driving, can cause the hip flexors to shorten and weaken, leading to tightness.

Moreover, poor core abdominal muscle control requires the hip flexors to work harder to stabilize the upright posture, potentially resulting in overactivity, tightness, and pain in the hip and lower back.

It’s important to note that hip flexors do not directly cause lower back pain however they are involved in cases where poor overall Lumbo-pelvic control contributes to lower back symptoms.

So...being part of the problem, it stands to reason that they need to be considered as part of a lower back pain solution.

Our Expert Physio

Cameron Lillicrap has spent over 40 years on both sides of elite sport, as an international rugby player and as Australian Rugby's Team Physiotherapist, trusted to keep some of Australia's most successful athletes on the field. His practical, focus-on-what-you-can-do approach is why people seek his advice when their rehab isn't working. He knows what's needed to get you back 'in the game'.

We asked Cam about Hips Flexors.

Here's what he said...

Q&A with Cam

What type of patients present with  Hip Flexor problems?

A much wider group than most people expect. Anyone coming in with an upper thigh complaint, quad strain, hamstring tear, adductor or abductor problem, gets their hip flexor function assessed as a matter of course. Strength, length, tightness, weakness - all of it. The hip flexors sit at the centre of so many movement patterns that they're almost always part of the picture.

Beyond that, I see hip flexor tightness and weakness constantly in people with lower back pain, particularly those with an anterior pelvic tilt, which usually means weak abdominals, tight back extensors, and weak glutes all feeding into each other.

The most common group walking through the door? Bike riders, long-distance drivers, people with desk jobs, and anyone whose gym program is heavy on some muscles and neglecting others. If you sit a lot, your hip flexors are almost certainly shortened and underperforming. It's just a matter of whether it's causing symptoms yet.

Release the tightness first, then rebuild the strength underneath it. In that order. Trying to strengthen a tight, overloaded hip flexor before you've freed it up doesn't work.

  • Roll the ITB and upper thigh fascial tightness with a Footeez
  • Trigger the TFL directly with a Pocket Physio Rocket to reduce muscle tightness at the source
  • Stretch the hip flexors and quads properly using a Stretchband Technique matters here, so take the time to isolate the right muscle rather than just going through the motions
  • Strengthen weak hip flexors with Mini Bands to build the capacity the muscle needs to stop getting overloaded in the first place

Done consistently, this combination addresses both the symptom and the cause.

It's not uncommon in athletes, though it's less frequent in the general population. The mechanism is almost always explosive - kicking a ball hard, sudden acceleration or deceleration, or a sharp change of direction that loads the hip flexor beyond what it can handle in that moment.

When it happens, you know about it. Sharp pain in the hip or upper thigh, immediate weakness, sometimes a burning sensation, swelling, and real difficulty walking normally. It's the kind of injury that has a clear moment of onset rather than building gradually.

First steps: ice and compression with an Ice Mate Pro to manage pain and swelling, and get a proper diagnosis from a health professional as soon as possible. Grade and location of the tear will determine everything about how it's managed from there.

Depends entirely on what you've got:

  • Minor (Grade 1) tear - 2-4 weeks with good management
  • Grade 2 tear - around 4-6 weeks
  • Tendon or musculotendinous junction involvement - 12 weeks or more out of competition

And as always, an accurate diagnosis isn't optional, it's what determines whether your management plan actually matches the injury. Treating a Grade 2 like a Grade 1 is one of the most common reasons people end up with recurring hip flexor problems.