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Are There Differences in Patient-Reported Outcomes Measurement Information System Scores After Total Knee and Total
Justin Leal1, Christopher T Holland2, Christine J Wu3
1Department of Orthopaedic Surgery, Duke University, Durham, North Carolina. Electronic address: https://twitter.com/justin_lea66126.
Background:
The purpose of this study was to evaluate Patient-Reported Outcomes Measurement Information System (PROMIS) scores, a generic patient-reported outcome measure (PROM), as a tool to compare outcomes between total knee (TKA) and total ankle arthroplasty (TAA).
Methods:
Patients who underwent TKA or TAA from January 1, 2019, to December 31, 2023, with at least 1 year of follow-up, were reviewed retrospectively. Upon application of the criteria, 2,418 TKAs and 500 TAAs were utilized for analysis. Demographics, PROMs, emergency department visits, readmissions, and revision surgeries were collected. Propensity score matching at a 3:1 ratio of TKA to TAA patients was then done, balancing age, sex, race, body mass index, and American Society of Anesthesiologists classification, which resulted in a final cohort of 1,256 TKAs and 470 TAAs.
Results:
Preoperative PROMIS pain interference (PI) scores were similar between TKA and TAA, and both showed improvements by 6 weeks. Patients undergoing TAA, however, had a greater decrease in PI scores at 1 year (TKA: -10.0 [-15.0 to -5.0]) versus TAA: -11.0 [-17.0 to -6.0]; P = 0.044). Regarding PROMIS physical function (PF), preoperative scores were also similar for TKA and TAA patients. Additionally, patients in both groups had similar improvement in PF at 1 year; however, TKA patients had better PF at 6 weeks (TKA: 41.0 [36.0 to 46.0] versus TAA: 37.0 [33.0 to 41.0]; P < 0.001). Preoperative PROMIS depression scores were similar between groups and showed similar improvement after surgery. Joint-specific PROMs improved in each cohort, respectively.
Conclusions:
Both TKA and TAA showed improvement postoperatively in joint-specific PROMs, which concurrently resulted in PROMIS score improvement across all domains in both joints. This suggests that arthroplasties across different anatomic sites can be compared using generic PROMs. For TKA and TAA, similar improvements in PROMIS PI, PF, and depression were noted 1 year after surgery.
Level Of Evidence:
III.
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