Hip External Rotation Restriction
Hip - Mobility
Limited hip external rotation reduces squat depth and can cause compensations in the lumbar spine and knees.
Biomechanical Mechanism
Posterior capsule tightness and deep rotator stiffness limit ER range.
Clinical Rationale
Restricted hip ER shifts stress to the lumbar spine and knee. Improving hip mobility restores lower-limb mechanics.
Practical Solution
Restore ER range and control before heavy squatting and rotational tasks.
Common Compensations
- Lumbar flexion
- Knee valgus
- Foot pronation
Progression
- Level 1: Mobility drills
- Level 2: End-range control
- Level 3: Integrated patterns
- Level 4: Loaded rotation
Regression
- Reduce range
- Use supported positions
- Decrease load
Red Flags
- Groin pain
- Mechanical catching
- Trauma
Differential Diagnosis
- Femoroacetabular impingement
- Hip joint pathology
- Labral involvement
Related Patterns
- anterior pelvic tilt
- squat compensation
Related Exercises
- piriformis stretch
- hip cars
- goblet squat
- clamshell
- 90 90 hip stretch
- glute piriformis smr
Related Assessments
- hip er 90 assessment
- goblet squat assessment
- overhead squat assessment
Evidence
Level: limited
Evidence for improving hip external rotation restriction with exercise and stretching is limited; clinical practice is guided by biomechanics and case reports.