05/21/2026
Hip Pain and Limited Hip Extension? Your Sacrum May Be the Problem
A ‘locked” or poorly moving sacrum can contribute to hip pain and reduced hip extension- especially during walking, running, lunges, deadlifts, hills or explosive movements.
The sacrum, Si joint, pelvis, hip capsule, glutes, psoas, and lumbar spine all work together. If one area stiffens, another area usually compensates.
Common Patterns: When hip extension is limited, people often compensate by:
• Extending through the low back
• Rotating the pelvis
• Overusing hamstrings
• Gripping with the hip flexors
• Compressing the SI joint
This can create:
• Deep buttock pain
• Front-of-hip pinching
• SI joint ache
• Groin tightness
• Low back stiffness
• Pain during the stride or push-off
Common causes:
• SI joint dysfunction: symptoms:
o One-sided low back or buttock pain
o Pain rolling in bed
o Pain standing on one leg
o Feeling “stuck” or asymmetrical
Hip Flexor/ Psoas Tightness
• A tight psoas can pull the pelvis forward and restrict extension
Glute Inhibition
• Weak or delayed glute max activation reduces hip extension power
Hip Capsule Restriction
• Especially anterior capsule tightness
Femoroacetabular Impingement (FAI)
• Can cause pinching at end-range extension or flexion
Lumbar Spine Compensation
If the hip lacks extension, the low back often extends excessively instead
Key Movement Relationship:
Hip extension comes from:
• Glute Max
• Posterior pelvic mobility
• Sacral nutation, counternutation mechanics
• Hip capsule mobility
• Thoracic rotation
If the pelvis and sacrum cannot move well, the hip often “runs out” of extension early.
https://youtu.be/LSprUYhsYD4?si=59xmJeOPdTvxb3lL
https://youtu.be/N0SItAVNIkQ?si=UD37AShKcIgSXD4H
https://youtu.be/o1C6fAGRDME?si=-dv02ubQ6EdsSKGp