Impact of Pre-Operative PROMIS Depression Scores on Total Ankle Replacement Outcomes

Abstract

Category: Ankle Arthritis; Ankle; Other Introduction/Purpose: Total ankle replacement (TAR) is an effective procedure to help patients with end-stage osteoarthritis regain mobility and function. While previous studies have suggested that pre-operative factors such as stress or depression may influence the success of TAR, there is limited literature investigating this relationship. The goal of this study is to evaluate differences in functional and pain outcomes following TAR from patients with high and average PROMIS depression scores. Methods: Patients enrolled in the Orthopaedic Foot and Ankle Outcomes Research (OFAR) platform who underwent total ankle replacement were retrospectively analyzed. Patients were included if they had PROMIS outcomes collected both pre- and 12- months post-operatively. Patients were grouped as 'no/low depression' if they scored below 60 on the PROMIS depression scale, and 'high depression' if they scored greater than or equal to 60 (one standard deviation from the population mean). Statistical differences were evaluated non-parametrically using Wilcoxon rank tests and Mann-Whitney U tests. Results: 36 patients who underwent TAR met inclusion criteria for analysis. Based on pre-operative PROMIS depression scores, 28 patients were categorized 'no/low depression' (ND), and 8 were categorized as 'high depression' (HD). Both groups showed significant improvement in PROMIS physical function and PROMIS pain interference at 12-months. While the HD group had a significantly higher baseline PROMIS pain interference (65.8) compared to the ND group (58.4, p < 0.05), there was no significant difference between the two groups at 12-months (50.5 vs. 47.6, respectively). Similarly, while there was a significant difference in PROMIS depression score pre-operatively between HD and ND (62.5 vs. 48.3, p < 0.05), there was no significant difference 12- months post-operatively (52.5 vs. 45.8). Conclusion: Our data suggests that patients with high pre-operative PROMIS depression scores may have worse baseline physical function and pain interference compared to other patients but see greater overall improvement after total ankle arthroplasty. Patients in the 'high depression' group also showed a significant improvement in PROMIS depression score 12- months post-operatively. Additional investigation of large, non-commercial outcomes databases, such as OFAR, may also help determine which surgical interventions impact mental health outcomes.