Purpose There is a lack of consensus regarding need for Venous Thrombo Embolism (VTE) prophylaxis following arthroscopic knee surgery and open soft tissue knee reconstruction. Clear cut guidelines like ones for trauma surgery and arthroplasty do not exist and the published literature is limited to case reports with a few society guidelines. Given this lack of consensus, we conducted a modifed Delphi questionnaire of international experts to provide recommendations on this topic.

Methods The consensus statements were generated using an anonymised 3 round modifed Delphi questionnaire, sent to an international panel of 38 knee surgeons, with an 80% agreement being set as the limit for consensus. The responses were analysed using descriptive statistics with measures like mode, median and box plots. Feedback was provided to all panelists based on responses from the previous rounds to help generate the consensus.

Results Six consensus statements were generated after the three rounds of Delphi. Patient factors, prolonged surgery duration and family history of thrombogenic events emerged as the main points to be taken into consideration for prophylaxis.

Conclusion It was established through this study, that there exists a select group of patients undergoing arthroscopic surgery that justify the usage of VTE prophylaxis. The expert responses to most of the questions in diferent scenarios favoured usage of VTE prophylaxis based on patient factors like advanced age, past history of VTE, smoking, oral contraceptive use etc.

Level of evidence Level V.

目的关于膝关节镜手术和开放性软组织膝关节重建术后静脉血栓栓塞 (VTE) 预防的需求缺乏共识。不存在像创伤外科和关节置换术那样的明确切割指南，已发表的文献仅限于具有少数社会指南的病例报告。鉴于缺乏共识，我们对国际专家进行了改良 Delphi 问卷，以提供关于该主题的建议。

方法使用匿名3轮改良 Delphi 问卷生成共识声明，发送给38名膝关节外科医生的国际小组，将80%的一致性设定为共识限度。使用描述性统计量分析反应，测量指标如模式、中位数和箱形图。根据前几轮的答复向所有小组成员提供了反馈，以帮助达成共识。

结果在三轮 Delphi 之后产生了六项共识声明。患者因素、手术时间延长和血栓形成事件家族史是预防治疗需要考虑的要点。

结论通过本研究确定，接受关节镜手术的特定患者组中 VTE 预防治疗是合理的。专家对不同情况下的大多数问题的回答支持根据患者因素（如高龄、VTE既往史、吸烟、使用口服避孕药等）使用 VTE 预防治疗。

证据等级 V 级。