Purpose: The aim of this ESSKA consensus is to give recommendations based on evidence and expert opinion to improve diagnosis, preoperative planning, indication and surgical strategy in ACL revision. Methods: The European expert surgeons and scientists were divided into four groups to participate in this consensus. A “literature group” (four surgeons); “steering group” (14 surgeons and scientists); “rating group” (19 surgeons) and finally “peer review group” (51 representatives of the ESSKA-affiliated national societies from 27 countries). The steering group prepared eighteen question–answer sets. The quality of the answers received grades of recommendation ranging from A (high-level scientific support), to B (scientific presumption), C (low level scientific support) or D (expert opinion). These question–answer sets were then evaluated by the rating group. All answers were scored from 1 to 9. The comments of the rating group were incorporated by the steering group and the consensus was submitted to the rating group a second time. Once a general consensus was reached between the steering and rating groups, the question–answer sets were submitted to the peer review group. A final combined meeting of all the members of the consensus was held to ratify the document. Results: The literature review for the diagnosis and preoperative planning of ACL revision revealed a rather low scientific quality. None of the 18 questions was graded A and six received a grade B. The mean rating of all the questions by the rating group was 8.4 ± 0.3. The questions and recommendations are listed below. Conclusion: ACL revision surgery is a widely debated subject with many different opinions and techniques. The literature reveals a poor level of standardisation. Therefore, this international consensus project is of great importance. Level of Evidence: II.
- Anterior cruciate ligament