Which finding MOST supports clinical lumbar instability as a contributor to a patient's back pain?

• 1 Constant night pain that is completely unrelated to activity
• 2 A painful catch during return from forward bending with poor segmental control ✓ 정답
• 3 A consistent capsular pattern of restriction found in all lumbar movement directions
• 4 Symptoms that are unchanged by any position or movement tested

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