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Aim: This study aimed to evaluate the effect of previous arthroscopic surgery on total knee arthroplasty outcomes and complication rates. Material and Methods: This retrospective study included patients who underwent total knee arthroplasty due to grade 4 osteoarthritis, according to the Kellgren-Lawrance classification system in a tertiary hospital, between January 2012 and December 2016. The patients were divided into two groups according to whether or not they had undergone previous knee arthroscopy. The arthroscopic procedure included degenerative meniscus tear subtotal excision and synovectomy. The data of the two groups were compared. Outcome measures were the visual analog scale, McMaster Universities Osteoarthritis Index, Knee Society scoring system and knee range of motion. Results: The previous arthroscopy-free group comprised 94 patients (35 males, 59 females), and the previous undergoing arthroscopy group included 73 patients (23 males, 50 females). The mean age of previous arthroscopy-free group was 63.12 ± 2.8 years (range, 57 to 68), and the mean age of previous undergoing arthroscopy group was 62.42 ± 3.9 years (range, 55 to 73). The groups were similar in terms of age, gender, body mass index, follow-up periods, sides, and complications (p > 0.05 for all). In assessments at the end of 4 years, the groups were similar in respect of visual analog scale, McMaster Universities Osteoarthritis Index, Knee Society scoring system and knee range of motion. Conclusions: The results of this study showed that clinical outcomes and complications were similar in patients with primary total knee arthroplasty and no previous procedure and those who had previously undergone knee arthroscopy. In the light of these preliminary results, previous knee arthroscopy has no negative effect on the outcomes of total knee arthroplasty and complication rates. [ABSTRACT FROM AUTHOR]

Aim: This study aimed to evaluate the clinical and demographic data of patients requiring revision surgery after lumbar spinal stenosis (LSS) surgery and to provide a guide us in choosing primary surgical options. Material and Methods: This study was conducted as a single-center, descriptive, and retrospective study. LSS patients, who were operated upon using the same implant technique between 2012 and 2017, and subsequently underwent revision surgery due to implant failure and operated by the same surgeon were included. Medical records, preoperative and postoperative two-plan radiographs, and computed tomography (CT) scans of the primary and revision surgeries of the patients were evaluated. Results: A total of 19 patients (5 males, 14 females) with a mean age of 64.16 ± 7.9 years (range: 47 to 77 years) were included in the study. Most of the patients who underwent revision surgery were over 65 years of age and had a normal body mass index (BMI). In addition, 16 patients (84.2%) who underwent revision surgery were operated without transforaminal lumbar inter-body fusion (non-TLIF). L5-S1 was the most commonly seen level for spinal stenosis revision. The mean revision time was 245.26 ± 65.1 days (range: 135 to 342). Conclusion: Debates are ongoing between transforaminal lumbar inter-body fusion (TLIF) and non-TLIF surgery. In light of the data obtained through this study, we think that TLIF cage surgery should be included in the primary surgical procedure, especially at the lumbosacral junction, where it is difficult to obtain fusion to avoid revision in patients undergoing LSS surgery. [ABSTRACT FROM AUTHOR]