Browsing by Author "Landea, Daniela"
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Publication High satisfaction and functional improvement following robotic‐assisted total knee arthroplasty: A Latin American cohort study(2025) Calvo, Rafael; Figueroa, David; Landea, Daniela; Gonzalez, Waldo; Isla, Jorge; Figueroa, LoretoPurpose: Total knee arthroplasty (TKA) is a widely performed surgical procedure for patients with severe knee osteoarthritis, aiming to reduce pain, improve function, and enhance quality of life. Patient satisfaction following TKA typically ranges from 85% to 90%, with factors such as malalignment and postoperative instability being common causes of dissatisfaction. Robotic-assisted TKA (RA-TKA) has demonstrated advantages in surgical precision and better functional recovery compared to conventional techniques. The objective of our study is to evaluate and quantify the level of patient satisfaction and functional outcomes after robotic-assisted TKA. Methods: Prospective cohort of patients who underwent TKA using robotic-assisted surgery at a single centre between 2018 and 2020. Demographic data were collected, and patient satisfaction was evaluated at the 1-year follow-up using the Knee Society Scoring (KSS) system. Functionality was assessed through patient-reported outcome measures (PROMs), specifically the Knee Injury and Osteoarthritis Outcome Score for Joint Replacement (KOOS-JR), both preoperatively and postoperatively, with a minimum follow-up period of 3 years. All statistical analyses were performed using STATA version 18.5. Results: A total of 270 patients with complete follow-up were evaluated. 92.6% (n = 250) of patients were satisfied or very satisfied with the surgery, while 7.4% (n = 20) reported dissatisfaction. No statistically significant difference was found in age, sex, BMI, or preoperative Knee Injury and Osteoarthritis Outcome Score for Joint Replacement (KOOS JR) between the satisfaction and dissatisfaction groups. However, satisfied patients had a significantly higher postoperative KOOS JR (p = 0.0001). Conclusion: A high level of satisfaction and significant functional improvements were achieved after robotic-assisted TKA in patients with severe osteoarthritis.Publication Impact of body mass index on robotic-assisted total knee arthroplasty outcomes: A retrospective cohort analysis(2025) Gonzalez, Waldo; Calvo, Rafael; Figueroa, David; Isla, Jorge; Landea, Daniela; Tapia, CamilaIntroduction: Obesity is a growing global health concern and a known risk factor in total knee arthroplasty (TKA). With an increasing number of obese patients requiring TKA, it is essential to understand how obesity influences clinical outcomes and complication rates. The objective of this study is to investigate the impact of obesity on clinical outcomes and complications in patients undergoing robotic-assisted TKA (RA-TKA). Methods: A retrospective cohort study was conducted on 216 patients aged ≥18 years who underwent RA-TKA between 2019 and 2023, with a minimum postoperative follow-up of one year. Patients were stratified into three body mass index (BMI) categories: <25, 25-29, and ≥30 kg/m2. Demographic, intraoperative, and postoperative variables-including tourniquet use and time, implant type, hospital stay, and complications-were compared. Statistical analysis was performed (p < 0.05). Results: Two hundred sixteen patients (91.5% follow-up rate) were evaluated at a mean of 34 months, postoperatively. No statistically significantly difference was found among the BMI groups in terms of age, sex, use of tourniquet, hospital stay, or use of stem implants. A statistically significant difference was observed only in the group of BMI <25 kg/m2 regarding arthrofibrosis. When patients were grouped as a BMI <35 vs a BMI ≥ 35 kg/m2, a higher complication rate was noted in the ≥35 kg/m2 group (18.2% versus 7.2%), though the difference was not statistically significant (p = 0.09). Conclusions: This study found that the difference was not statistically significant in the overall rate of postoperative complications among patients with obesity undergoing RA-TKA. However, a nonsignificant trend toward a higher complication rate was observed in patients with severe obesity (BMI ≥35 kg/m2). Interestingly, a statistically significant increase in arthrofibrosis was found in patients with BMI <25 kg/m2, a finding that contrasts with the current literature. Level of evidence: Level III.Publication Return-to-sport tests: Do they reduce risk of re-rupture after anterior cruciate ligament reconstruction?(2026) Figueroa, David; Gonzalez, Waldo; Landea, Daniela; Tapia, Camila; Erskine, DanielaIntroduction: Anterior cruciate ligament (ACL) rupture is one of the most common knee injuries. Despite the effectiveness of reconstruction, re-rupture rates of up to 15 % have been reported. Static and dynamic test of strength and movement control have been used to determine when return to sports (RTS) is appropriate. Objective: To determine whether successfully passing return to sport (RTS) tests reduces the re-rupture rate. Methods: Retrospective cohort study. Patients who underwent ACL reconstruction (ACLR) from June 2018 to May 2023, and who performed RTS tests after rehabilitation, were analyzed. Patients who, in addition to ACLR, underwent extra-articular tenodesis, osteotomy, or multiligament injuries were excluded. RTS tests included the following: repeat sprint ability, dynamic valgus, proagility, unilateral counter movement jump (CMJ), isokinetic, triple hop test, and functional movement screen (FMS). All statistical analyses were performed with STATA version 18.0. Results: Ninety five patients underwent RTS tests after ACLR, with a follow-up time of 27.8 months. 71.6 % of patients were men with a mean age of 25.15 ± 10.7 years. The overall re-rupture rate was 13.68 % (13 patients). When comparing patients who passed and did not pass the RTS tests, there were no differences by sex (p = 0.06) or age (p = 0.11). The only statistically significant difference between the groups was the mean risk score (passed: 11.5 ± 0.7 vs. not passed: 15.5 ± 2.1; p < 0.001). Patients with re-rupture were more likely to be from the non-passed group (passed: 0 % v/s not passed: 18.1 %; p = 0.03), with a statistical power of 0.70. Conclusion: Our records show that passing RTS test after an ACLR could guarantee the absence of re-rupture in the medium term