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(A) Baseline ultrasound (US) showing marked common extensor origin tendinopathy with an intrasubstance tear with hypoechoic tissue pattern (arrow and outlined in blue). (B) Formal US at 18 months showing successful regeneration of tendon-like tissue at the past area of tendinopathy. (C) Formal US at 30 months indicating sustained structural improvement at long-term follow-up.
