Silbernagel Progressive Loading Protocol for Achilles Tendinopathy: A Step-by-Step Clinical Guide (youtube.com)

• Isometric holds to reduce pain and improve tendon capacity
• Eccentric-concentric heel raises (straight and bent knee)
• Pain monitoring using VAS (0-3/10 permissible)
• Return-to-sport: strength symmetry, hop tests, pain-free motion

"The Silbernagel protocol outlines a structured, progressive loading program for Achilles tendinopathy, emphasizing isometric holds for pain relief, concentric-eccentric loading, and sport-specific progressions. Pain is monitored using the Visual Analog Scale (0-3/10 allowed). Return-to-sport criteria include pain-free motion, strength symmetry (<10% deficit), and functional hop tests. This resource is a cornerstone of foot and ankle rehabilitation, directly informing clinical protocols."