Principal Investigator: Antonia Chen
Upcoming total joint arthroplasty (TJA) offers motivation for patients with severe obesity to lose weight to optimize clinical outcomes. This study assessed the efficacy of a preoperative weight loss intervention using a remote dietitian and mobile app.
Participants with a body mass index (BMI)>40–47kg/m2 scheduled for TJA were recruited. Participants randomized to the control group received standard care (nutritionist and/or physical therapy) and those randomized to the intervention group were connected with a remote dietician.
Outcomes were weight change from baseline to 12 weeks, along with behavioral and functional parameters. Outcome and demographic data were collected using medical chart review, along with pre- and post-intervention surveys and phone interviews. Laboratory tests were used to assess nutritional status.
Patients receiving standard care had a mean baseline BMI of 43.7kg/m2±2.3 and 43.4kg/m2±5.2 after 12 weeks. Patients in the intervention group had a mean baseline BMI of 43.5kg/m2±1.7 and BMI of 44.3kg/m2±5.5 after 12 weeks. Both groups lost weight, although the difference was not significantly different.
Visits with a remote dietician and tracking one’s diet offer opportunities for preoperative weight loss that may otherwise be unavailable.