What are the prevalence and risk factors for repeat ipsilateral knee arthroscopy?
- 20 Downloads
The number of arthroscopic knee surgeries performed annually has increased over the last decade. It remains unclear what proportion of individuals undergoing knee arthroscopy is at risk for subsequent ipsilateral procedures. Better knowledge of risk factors and the incidence of reoperative ipsilateral arthroscopy are important in setting expectations and counselling patients on treatment options. The aim of this study is to determine the incidence of repeat ipsilateral knee arthroscopy, and the risk factors associated with subsequent surgery over long-term follow-up.
The New York Statewide Planning and Research Cooperative Systems outpatient database was reviewed from 2003 to 2016 to identify patients who underwent elective, primary knee arthroscopy for one of the following diagnosis-related categories of procedures: Group 1: cartilage repair and transfer; Group 2: osteochondritis dissecans (OCD) lesions; Group 3: meniscal repair, debridement, chondroplasty, and synovectomy; Group 4: multiple different procedures. Subjects were followed for 10 years to determine the odds of subsequent ipsilateral knee arthroscopy. Risk factors including the group of arthroscopic surgery, age group, gender, race, insurance type, surgeon volume, and comorbidities were analysed to identify factors predicting subsequent surgery.
A total of 765,144 patients who underwent knee arthroscopy between 2003 and 2016, were identified. The majority (751,873) underwent meniscus-related arthroscopy. The proportion of patients undergoing subsequent ipsilateral knee arthroscopy was 2.1% at 1-year, 5.5% at 5 years, and 6.7% at 10 years of follow-up. Among patients who underwent subsequent arthroscopic surgery at 1-, 5-, and 10-year follow-up, there was a greater proportion of patients with worker’s compensation insurance (p < 0.001), index operations performed by very high volume surgeons (p < 0.001), and cartilage restoration index procedures (p < 0.001), compared with those who never underwent repeat ipsilateral surgery.
Understanding the incidence of subsequent knee arthroscopy after index procedure in different age groups and the patterns over 10 years of follow-up is important in counselling patients and setting future expectations. The majority of subsequent surgeries occur within the first 5 years after index surgery, and subjects tend to have higher odds of ipsilateral reoperation for up to 10 years if they have worker’s compensation insurance, or if their index surgery was performed by a very high volume surgeon, or was a cartilage restoration procedure.
Level of evidence
KeywordsKnee arthroscopy Cartilage repair Osteochondritis dissecans Meniscal repair Subsequent knee arthroscopy
OB reviewed the analysed data, all the relevant literature, statistical results, drafted the manuscript and made any necessary edits as part of the review process. KS assisted with gathering the literature review for the paper and formatting the references. AP was involved with SPARCS dataset management and statistical analysis for hypothesis testing. TL contributed to manuscript writing as well as editing process. KC reviewed the manuscript drafts and contributed to the editing and review process. JB senior author for this study, who developed the research question, hypotheses and guided the editing/review process.
No internal or external funding sources were used to conduct this study.
Compliance with ethical standards
Conflict of interest
There are no relevant disclosures, relationships, conditions or circumstances to report that may represent potential conflict of interest in this study.
This research represents an analysis of the large and public Statewide Planning and Research Cooperative System (SPARCS) database, which contains no patient identifiers and is exempt from the institutional review board (IRB) process.
- 3.Cullen KA, Hall MJ, Golosinskiy A (2009) Ambulatory surgery in the United States, 2006. Natl Health Stat Rep (11):1–25Google Scholar
- 6.Frank RM, McCormick F, Rosas S, Amoo-Achampong K, Erickson B, Bach BR Jr et al (2018) Reoperation rates after cartilage restoration procedures in the knee: analysis of a large US commercial database. Am J Orthop (Belle Mead NJ) 47:1–15Google Scholar