Hip imbalance is more common than most people realise and more consequential than most people appreciate. It refers to a meaningful difference between the two sides of the hip in terms of strength, mobility, or alignment. Almost everyone has some degree of asymmetry between their left and right hip, but when that asymmetry exceeds a certain threshold, it begins to affect movement quality, performance, and injury risk.
The reason hip imbalance is frequently missed is that it rarely presents as obvious hip pain. Instead it shows up as recurring lower back pain on one side, a knee that keeps causing problems, a persistent ankle that will not heal properly, or a squat that consistently leans to one side. These are downstream effects of an upstream hip problem.
This guide covers the different types of hip imbalance, how to assess which type you have, and the most effective corrective approach for each.
The Three Types of Hip Imbalance
Understanding which type of imbalance you have determines which corrective approach will work.
Type 1: Strength imbalance One hip is significantly stronger than the other in one or more movement directions. The most common pattern is a dominant side that takes more load during bilateral exercises and a weaker side that compensates by reducing its contribution. Strength imbalances develop from habitual movement patterns, previous injury on one side, or sport-specific loading that favours one leg.
Type 2: Mobility imbalance One hip has significantly more or less range of motion than the other in one or more directions. Mobility imbalances are often the result of previous ankle or knee injuries that altered gait mechanics, previous hip injuries, prolonged habitual positions such as always crossing the same leg, or structural differences in hip socket depth and orientation.
Type 3: Alignment imbalance (lateral pelvic tilt) The pelvis sits higher on one side than the other in a resting standing position. This is known as a lateral pelvic tilt and can be caused by a leg length discrepancy, strength imbalance in the hip abductors and quadratus lumborum, or habitual postures such as always shifting weight onto the same hip when standing.
Most people with hip imbalance have elements of more than one type, as strength and mobility imbalances tend to develop together and both can contribute to alignment changes.
The Consequences of Hip Imbalance
Lower back pain: The most common consequence. When one hip is weaker or less mobile, the lumbar spine compensates during movement, experiencing asymmetric loading that creates chronic irritation on the overloaded side.
Knee pain: Hip strength imbalance causes the femur of the weaker side to rotate inward during movement, increasing medial knee stress and the risk of patellofemoral pain syndrome and IT band-related lateral knee pain.
Recurring ankle sprains: The hip abductor weakness on one side that causes the hip to drop during single-leg stance also reduces ankle stability on that side, increasing the risk of lateral ankle sprains.
Asymmetric squat and deadlift mechanics: A consistently lopsided squat or deadlift where the bar tilts or one side rises first is almost always caused by a hip strength or mobility imbalance.
Gait asymmetry: Hip imbalance produces observable asymmetry in walking and running, where stride length, hip extension, or hip drop differs between sides. Over long distances, this asymmetric loading accumulates significant stress on the overloaded structures.
Reduced athletic performance: Explosive movements, change of direction, and single-leg power all require balanced hip function. A significant strength imbalance between sides reduces the power available from the weaker side and creates a predictable weak point in athletic movement.
How to Assess Your Hip Imbalance
Assessment 1: Single Leg Squat Test
Tests for: Gluteus medius strength and hip stability asymmetry.
How to do it:
- Stand in front of a mirror facing forward
- Stand on your right leg with the left foot slightly raised
- Slowly lower into a single-leg squat to approximately 45 degrees
- Observe the following: does the right knee cave inward, does the left hip drop lower than the right, does the torso lean significantly to one side
- Repeat on the left leg
- Compare the quality and stability of both sides
What to look for: If one side shows significantly more knee cave, hip drop, or trunk lean than the other, gluteus medius and hip external rotator weakness is more pronounced on that side.
Assessment 2: Hip Mobility Comparison
Tests for: Dorsiflexion, hip flexion, and hip rotation mobility asymmetry.
Knee to wall test for dorsiflexion:
- Stand facing a wall with one foot flat on the floor
- Drive the knee forward toward the wall, keeping the heel flat
- Find the maximum distance from the wall at which the knee can just touch
- Compare both sides
Hip flexion test:
- Lie on your back and pull one knee toward the chest as far as possible while keeping the other leg flat
- Measure how far the knee travels and compare both sides
- If one knee significantly outpaces the other, hip flexion mobility is asymmetric
Hip rotation test:
- Sit on a chair with feet flat on the floor and knees at 90 degrees
- Without moving the knee, rotate the lower leg outward (internal hip rotation) and inward (external hip rotation)
- Compare the range available on each side
Assessment 3: Standing Pelvic Level Check
Tests for: Lateral pelvic tilt.
How to do it:
- Stand naturally in front of a mirror in shorts or clothing that allows you to see the hip bones
- Place one finger on each hip bone (the bony prominence at the front of each side of the pelvis)
- Observe whether both fingers are at the same height
- Have someone photograph you from behind and observe whether the waistline creases are level
What to look for: A visible difference in height between the two hip bones indicates a lateral pelvic tilt. The higher side may indicate tightness in the quadratus lumborum and hip abductors on that side. The lower side may indicate weakness in the hip abductors on that side.
Assessment 4: Bridge and Deadlift Observation
Tests for: Gluteus maximus strength asymmetry.
How to do it:
- Perform a single leg glute bridge on each side and compare the effort required and the height achieved
- If available, video yourself performing a Romanian deadlift from the front and observe whether the bar stays level throughout or tilts to one side
- A bar that consistently rises higher on one side indicates that side is producing more force
Corrective Exercises for Strength Imbalance
The principle for correcting strength imbalance is to prioritise unilateral exercises that load each leg independently, and to add extra volume to the weaker side.
Single leg glute bridge with focus on weaker side:
- Perform 3 sets of 12 reps on the weaker side for every 2 sets on the stronger side
- This additional volume on the weaker side gradually closes the strength gap over 6 to 8 weeks
Step ups:
- Perform all sets on the weaker side first, before fatigue has accumulated
- Complete equal reps on both sides but begin every session with the weaker leg
- Use a step height that challenges the weaker side without significant compensation
Bulgarian split squat:
- Perform the weaker side first in every session
- Begin with bodyweight and add load only when both sides perform with equal quality
Lateral band walk with emphasis on weak side:
- Perform 50 percent more steps in the direction that loads the weaker hip abductor
- If the right gluteus medius is weaker, perform more steps moving to the left, which requires the right gluteus medius to work against the band
Single leg Romanian deadlift:
- Perform on the weaker side first
- Add one extra set on the weaker side per session until strength equalises
Monitoring progress: Reassess the single-leg squat test every 3 to 4 weeks. The goal is for both sides to show similar quality in terms of knee tracking, hip stability, and trunk control.
Corrective Exercises for Mobility Imbalance
The principle for correcting mobility imbalance is to spend additional time on the restricted side while maintaining mobility work on both sides.
Hip flexor stretch for restricted side:
- Perform 3 sets of 60 seconds on the restricted side for every 2 sets on the mobile side
- Use the kneeling hip flexor stretch and the couch stretch as primary tools
90/90 hip stretch:
- Identify which side feels more restricted in the 90/90 position
- Spend an additional 60 seconds on the restricted side at the end of every session
Hip CARs for rotation restriction:
- Perform controlled articular rotations on both sides
- Pause at the end range in the most restricted direction on the restricted side and hold for 3 to 5 seconds
- This end-range loading drives adaptation at the specific point of restriction
Banded ankle distraction for dorsiflexion asymmetry:
- If the knee to wall test reveals a significant difference between sides, perform the banded ankle distraction and calf stretching programme on the restricted side daily
Soft tissue release on restricted side:
- Use a foam roller and massage ball to address tightness in the hip flexors, piriformis, and TFL on the more restricted side before mobility work
- Release work before stretching consistently produces better results than stretching alone
Corrective Exercises for Lateral Pelvic Tilt
Lateral pelvic tilt correction requires a combination of strengthening the hip abductors on the lower side and releasing the quadratus lumborum on the higher side.
Hip hike exercise:
- Stand sideways on a step with one foot hanging off the side
- Lower the hanging hip as far as possible, then hike it upward as high as possible
- This isolates the hip abductor and quadratus lumborum on the standing side
- Perform 3 sets of 15 reps on the side where the hip is habitually lower
Side-lying hip abduction on lower side:
- Lie on your side with the lower hip facing up
- Lift the top leg, which corresponds to the side where the hip sits lower in standing
- Complete 3 sets of 15 reps
- This strengthens the gluteus medius that is allowing the hip to drop
Quadratus lumborum stretch on higher side:
- Stand with feet shoulder-width apart
- Reach the arm on the higher hip side overhead and lean away from it
- Hold for 45 to 60 seconds per side
- Perform additional sets on the side where the hip sits higher
Standing wall check:
- Stand with your back against a wall and feet 10 centimetres from the base
- Consciously level the pelvis so both hip bones are at the same height
- Practice maintaining this level pelvis while breathing normally for 60 seconds
- This proprioceptive awareness drill helps the nervous system learn the correct pelvic position
How to Programme Correction Work Alongside Regular Training
Hip imbalance correction does not require a separate training programme. It integrates into existing training with a few targeted modifications.
Always start unilateral exercises on the weaker or more restricted side. Starting fresh on the limiting side means you apply more quality attention and effort before fatigue develops.
Add one to two extra sets on the weaker or restricted side. This additional volume is the primary driver of closing the gap between sides. More than two extra sets can create excessive fatigue without proportional benefit.
Perform mobility work for the restricted side daily. Mobility responds to frequency. Daily targeted stretching on the restricted side produces meaningfully faster improvement than the same stretching done two or three times per week.
Reassess every 4 weeks. Hip imbalances take 8 to 12 weeks to meaningfully correct. Regular reassessment confirms the programme is working and allows adjustment if progress is slower than expected.
Reduce the asymmetric correction work once imbalance resolves. Continue performing equal bilateral and unilateral work once both sides perform similarly. Excessive continued focus on the previously weaker side can create a reversal of the original imbalance.
When to Seek Professional Assessment
Self-assessment and correction is appropriate for functional imbalances caused by movement habits and training patterns. Seek assessment from a physiotherapist or sports medicine doctor if:
- The lateral pelvic tilt is accompanied by significant lower back pain, leg pain, or neurological symptoms
- A true leg length discrepancy is suspected, which requires imaging to confirm and may require an orthotic correction
- Hip imbalance developed suddenly rather than gradually
- Correction exercises do not produce improvement after 8 to 12 weeks of consistent work
- The imbalance is accompanied by clicking, catching, or sharp pain in the hip joint
Frequently Asked Questions
Is some hip imbalance normal? Yes. Perfect bilateral symmetry does not exist. Most people have a slightly dominant side and minor differences in hip mobility between sides. The threshold at which imbalance becomes clinically significant is generally considered to be a 10 to 15 percent difference in strength between sides, or a visible and consistent difference in mobility or alignment that affects movement quality.
Can hip imbalance cause scoliosis? A lateral pelvic tilt can create the appearance of scoliosis on a standing X-ray by tilting the base of the spine. True structural scoliosis is a curvature of the spine itself rather than a consequence of pelvic tilt. If you have been told you have scoliosis, a physiotherapist can assess whether a functional pelvic tilt is contributing and whether correcting the hip imbalance reduces the apparent curve.
How long does it take to correct hip imbalance? Mild functional imbalances typically improve meaningfully within 6 to 8 weeks of consistent targeted work. Significant imbalances with associated pain and movement dysfunction generally take 10 to 16 weeks to substantially correct. The strength gap between sides typically closes faster than mobility asymmetry.
Will correcting hip imbalance improve my athletic performance? Yes, often significantly. A strength imbalance between sides means one leg is producing less power than it could during bilateral exercises, sprinting, and jumping. Closing this gap increases total power output and reduces the compensatory loading patterns that limit performance and increase injury risk.
Should I stop training the stronger side while correcting the weaker side? No. Continuing to train the stronger side maintains its fitness and strength while the weaker side catches up. Simply add extra volume to the weaker side rather than reducing the stronger side’s training.