RSM-DPA-004
Written by Hironori Ikeda, MSc Sports Medicine
RSM International Academy · Chiang Mai, Thailand
What Should You Assess When a Knee Moves Inward Under Load?
The knee may stay comfortable in a slow squat yet move inward during landing, or hurt only while stepping down. Those differences matter more than whether one photograph looks aligned.
At RSM, I compare the painful phase with hip support, forward ankle travel and foot contact. I also watch the trunk, because a change above the hip can alter the way the leg accepts weight.
This article explains what gluteus medius contributes, how to interpret an ankle finding and how to test one useful cue. It also separates an immediate movement change from lasting improvement and identifies symptoms that need further assessment.
In This Article
- What Should You Assess When a Knee Moves Inward Under Load?
- In This Article
- 1. Knee Falls In: Squat, Step-Down or Landing?
- 2. Gluteus Medius: Pelvic Support Is More Than a Strength Label
- 3. Ankle and Foot: Can the Tibia Advance Without Losing the Heel?
- 4. One Useful Cue: Test the Response Without Forcing the Knee Out
- 5. Re-Test the Original Task and Recognise When to Refer
- Related RSM Clinical Blogs
- Study Dynamic Posture Assessment at RSM
1. Knee Falls In: Squat, Step-Down or Landing?
Choose the task that reproduces the client's concern: lowering into a squat, accepting weight during a step-down, or the first weight-acceptance phase of a landing. Record foot position, depth or step height and the familiar symptom. A painless squat should not replace a painful landing as the outcome.
Inward motion can combine hip adduction and rotation with tibial, foot and trunk movement. Front-view video helps describe the pattern, but it cannot isolate each three-dimensional contribution. Observe the pelvis and torso as well as the knee.
Dix and colleagues found that the relationship between hip strength and valgus differed across tasks in asymptomatic females. I therefore do not diagnose weak gluteals from one inward-moving knee. An acute injury or unstable knee changes the assessment before a landing trial is considered.
2. Gluteus Medius: Pelvic Support Is More Than a Strength Label
Gluteus medius connects the outer ilium to the greater trochanter. It lies over gluteus minimus, with its posterior portion covered by gluteus maximus. It abducts the hip and contributes to controlling pelvic drop when the other foot leaves the ground.
Anatomy note: In cadaver measurements, posterior gluteus medius fibres changed from external- to internal-rotation leverage as hip flexion increased; “hip abductor” alone misses this position-dependent role.
Compare comfortable hip abduction with the pelvis supported before asking for a controlled single-leg knee bend, if appropriate. Note pain, effort and whether the pelvis or trunk changes first. The first comparison concerns muscle performance; the second adds balance and weight-bearing demands.
For local palpation, orient between the iliac crest and greater trochanter and begin with tolerable contact in the accessible muscle layer. Tenderness directly over the trochanter differs from a muscle-belly finding and may need a tendon-focused assessment. Neither tenderness nor a brief change after contact proves that the muscle caused the knee path.
3. Ankle and Foot: Can the Tibia Advance Without Losing the Heel?
When the heel lifts or the foot turns as the knee bends, compare ankle dorsiflexion with the heel down and a consistent foot angle. Record the limiting sensation and knee travel. Avoid gaining extra distance by changing foot direction between sides.
During weight acceptance, the knee flexes while the tibia advances over the foot. Soleus supplies plantar-flexor force that helps control this advance; the foot also adapts to the supporting surface. Limited dorsiflexion can coexist with changes elsewhere, but normal pronation is not automatically a fault.
The ankle review found an association between reduced dorsiflexion and dynamic valgus. If the range finding agrees with the troublesome phase, I examine the ankle and calf more closely. If it does not, I reconsider hip, trunk and task demands rather than insisting the calf must be the cause.
4. One Useful Cue: Test the Response Without Forcing the Knee Out
For a stable, tolerable presentation, try one cue such as allowing the knee to follow the foot's direction during lowering. Keep the heel and forefoot in contact. If the client pushes the knee outward by rolling onto the outside edge, the instruction has changed more than the intended variable.
Compare the same depth and pace first. Reducing step height or squat depth may also be useful when symptoms limit practice, but label that as reduced demand. Avoid combining a foot cue, trunk correction and resistance band at once, because the useful part becomes unclear.
Exercise studies report mixed changes in valgus after programs lasting weeks. They do not validate one immediate cue as a lasting correction. I retain a cue when it is understandable, comfortable and repeatable, then assess whether appropriate practice and loading are needed beyond any local manual work.
5. Re-Test the Original Task and Recognise When to Refer
Repeat the original squat, step-down or appropriate landing with the same support, depth or height, pace and load. Compare familiar pain, confidence and the knee path across several repetitions. Record whether a cue is still needed; removing it is a separate comparison.
A visually straighter knee is not a successful outcome if pain or instability increases. New marked swelling, locking, inability to bear weight or recurrent giving way needs prompt clinical assessment. A hot red knee with fever or systemic illness requires urgent care.
When the knee is stable but pain persists, arrange further assessment rather than adding forceful correction. Improvement in a slow squat does not establish tolerance for repeated landings or cutting. My next decision follows the original complaint and the client's response, not a single alignment score.
Related RSM Clinical Blogs
Browse all Dynamic Posture Assessment clinical guides
▷ Foot Collapses Inward: Pronation, Tibial Rotation & Hip — Dynamic Posture Assessment · Examine pronation and tibial motion when the foot changes alongside the inward knee path.
▷ Hip Drops on One Leg: Gluteal Capacity & Trunk Strategy — Dynamic Posture Assessment · Separate pelvic drop and trunk strategy from a simple hip-abductor weakness label.
▷ Knee Valgus: Hip, Adductor & Foot Contributions — Deep Tissue Massage · Connect knee-valgus findings with selective hip, adductor or calf contact and a matched re-test.
Study Dynamic Posture Assessment at RSM
In Dynamic Posture Assessment & Kinetic Chain Training, practise separating an observed knee path from the hip, foot and trunk comparisons that guide care. Completion of Trigger Point Therapy provides a palpation foundation.
Deep Tissue Massage adds precise muscle-layer and contact decisions. Sports Massage extends those decisions to training demands and conditioning, also building on TPT. These are complementary skills rather than a promise to correct every valgus pattern.
View the course schedule and entry requirements · Ask about course suitability and registration
About the Author
Hironori Ikeda, MSc Sports Medicine
Hironori leads RSM International Academy in Chiang Mai, Thailand. His teaching connects functional anatomy, clinical palpation and kinetic-chain assessment with practical massage decisions.
Read Hironori’s professional background and teaching approach