• The Journal of Korean Orthopaedic Ultrasound Society
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• v.6 no.2
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• pp.70-75
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• 2013

We experienced three cases with chronic shoulder pain due to a knot impingement after arthroscopic rotator cuff tear repair and treated with arthroscopic revision surgery. Ultrasonography is commonly used for an imaging scan and an useful diagnostic tool to follow up after rotator cuff repair recently. We also could diagnose three cases with the knot impingement using ultrasonography obviously. And we report these cases with a review of current literature.