Which of the following are considered return-to-sport criteria based on the IKDC 2000?

• A. All of the above
• B. Score of 93% or greater on the IKDC 2000
• C. No knee instability
• D. No knee effusion

Answer: (A)

IKDC 2000 return-to-sport readiness hinges on three interrelated signals of knee health: a high IKDC subjective score (93% or greater) showing the patient perceives near-normal function, absence of knee instability indicating the knee won’t give way under activity, and no knee effusion indicating no ongoing swelling or inflammation. Each aspect covers a different dimension—how the knee feels and functions, how stable it is, and whether there is ongoing joint inflammation. When all three are met, it suggests the knee can handle the demands of sport, which is why “All of the above” is the best choice.