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Daily Mobility Exercises by Dr. Kelly Starrett › Forums › Lifting › High groin tightness in squat causing a butt wink? › Re: High groin tightness in squat causing a butt wink?
Not necessarily. Could be a motor control is lacking.
How are your knee tracking within the movement?
If you are addressing the medial hamstring and adductor without seeing improvements this is not where the problem originates. The symptom remains because the cause is still there.