A New High-Tech, Low-Calorie Adventure in Joint Arthroplasty

Commentary The benefits of perioperative dietitian interventions in orthopaedic surgery are well documented1. While technical advancements have reduced reoperation risks for patients with obesity2, the prevalence of obesity continues to rise in the general population3. The randomized controlled trial by Seward et al. introduces an innovative approach to preoperative weight management for patients undergoing total joint arthroplasty (TJA). Their findings carry important clinical implications and pave the way for broader discussions on optimizing surgical outcomes through targeted interventions. Lose It Before Surgery: There’s an App for That! Obesity and osteoarthritis may be treated simultaneously, as there is no evidence regarding which one should be treated first4. This study highlighted the feasibility and importance of technology-driven preoperative weight management solutions, such as remote dietitian consultations and mobile applications (apps), in addressing obesity among patients undergoing TJA. With its high recruitment rate (76%) and active patient engagement, the findings emphasized the potential of these scalable interventions to bridge access gaps in care in populations with limited availability of in-person dietetic support, whatever the reason (e.g., cost, no time, etc.). Remote dietitian services may reduce barriers to accessing nutritional support, especially in regions with limited health-care infrastructure. It’s Progress, Not Perfection, Right? The result? Participants lost weight—the article reports satisfaction with the app but does not give information on satisfaction with the few pounds lost (and I suspect most patients would have hoped for more). While the intervention group achieved greater weight and body mass index (BMI) reductions compared with the control group that received standard care, the lack of significant differences highlights the challenges inherent in driving clinically meaningful weight loss through remote interventions alone. One of the key strengths of this study was its potential to offer a weight loss tool that could benefit patients aiming to shed weight before surgery. The preoperative phase provides an excellent opportunity to engage patients in conversations about weight loss. During this time, many patients become more aware of their excess weight and recognize the importance of addressing it. Therefore, any cost-effective method to support their weight loss efforts should be encouraged and utilized. Is It Science or a Sociocultural Answer? A Risk of the “Meh” Factor? It turns out that people are more likely to stick to a diet when there’s someone on the other end of a video call nodding in approval. Is it science or the guilt of knowing your dietitian might see your pizza boxes? Either way, scientifically speaking, it’s a win for remote dietitian services. This study set a precedent for incorporating mobile health tools into orthopaedic care pathways to decrease weight before surgery. Given the increasing prevalence of obesity in patients who undergo TJA, this work is a foundational step toward integrating technology-based solutions into preoperative weight management strategies, paving the way for future innovations in patient-centered care. Tech Solutions in Weight Management: Progress, Pitfalls, and the Reality Check The study’s small sample size and short intervention duration limited its generalizability and the potential to detect significant differences. Future research should explore extended intervention periods and larger cohorts to better understand the long-term efficacy and economic impact of these approaches. A limitation of the study was its open design, as masking the intervention from the patients was not feasible. The health-care professionals and the patients in the intervention and control groups were aware of their participation in a weight loss program, which could have influenced the outcomes of the intervention and introduced potential bias. The study also revealed that while some participants made real progress, others gained weight. Remote dietitian services and mobile apps are good for patients and, in theory, cheaper than in-person sessions at a clinic, but they are not always satisfying in practice. They are a promising step forward, but if patients hope for dramatic results, they might still need to sprinkle in some intense workouts and compare “apps versus abs” or motivate themselves by imagining taking a time machine back to when their hip or knee did not ache.