Evaluation of the External Validity of the Knee SFA Score

Injury to the anterior cruciate ligament is a serious and not uncommon event, which can affect the functional future of the knee. The result is instability, leading to meniscal and osteo-cartilaginous damage in the medium and long term. Early diagnosis would limit the occurrence of these complications. The average annual incidence of ACL rupture in the French population is estimated at around population can be estimated at around 0.03%, or approximately 20,000 cases per year. Diagnosis is currently based on clinical examination and dynamic ligament testing. However, these may be difficult to perform in the immediate post-trauma period, leading to a delay in diagnosis. Magnetic resonance imaging (MRI) is a good diagnostic tool, with a sensitivity of 83-95% and a specificity of 95-100%. However, access to MRI is still limited in emergencies, with an average appointment time (all indications combined) of 32.3 days. It is therefore to better target the indications for this examination. The Société Francophone d'Arthroscopie has developed a screening score for ACL lesions, based on questioning, to help guide post-trauma patients.