Alan Salgado Espino - Knee Rehabilitation Specialist on Instagram: "🧠 “Leg extensions are dangerous after ACL surgery.” You’ve probably heard this… but it’s not that simple. 💥 The truth? Leg extensions (aka open-chain knee extensions) can be safely used in ACL rehab — with the right timing, range, and load. 📚 Research shows that using leg extensions within a limited range (e.g., 90–45° of knee flexion) early in rehab does NOT increase graft strain, especially in hamstring grafts. Even with pa