Low activity prior to TKA may lead to increased activity, function postoperatively
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Key takeaways:
- Patients in the low and medium activity groups exceeded their preoperative steps vs. high physical activity patients.
- Patients in all activity levels reported similar numeric pain scores and pain reduction.
GRAPEVINE, Texas — Patients with low activity prior to total knee arthroplasty had greater improvements in activity and patient-reported function postoperatively compared with patients with high activity, according to results.
“This study suggests that preoperative activity may be a predictor for which patients show the greatest improvements in physical activity and functional measures, such as symptoms, pain, activities of daily living and quality of life,” Nitin Goyal, MD, chief science, technology and innovation officer at Zimmer Biomet, told Healio about results presented at the American Association of Hip and Knee Surgeons Annual Meeting.
Researchers categorized 536 patients undergoing primary TKA with at least 90 days of follow-up into groups based on preoperative step counts according to quartiles. Researchers compared step counts, pain scores and Knee Injury and Osteoarthritis Outcome Score for Joint Replacement scores between groups preoperatively and at 3 months postoperatively.
Results showed preoperative pain scores did not vary by physical activity level, while preoperative KOOS JR scores varied between high and low physical activity groups.
At 3 months postoperatively, researchers found patients in the low and medium physical activity groups exceeded preoperative daily steps by 186% and 114%, respectively. In comparison, patients in the high activity group reached 96% of preoperative daily steps, according to results. Patients across physical activity levels reported similar numeric pain scores and pain reduction at 3 months postoperatively. Although the low, medium and high physical activity groups had similar KOOS JR scores at 3 months postoperatively, researchers found patients in the low physical activity group had greater change compared with patients in the high physical activity group.
“Passively collected, objective, mobility data is quickly becoming ubiquitously available to the orthopedic community,” Goyal said. “Studies like these demonstrate how this data can be utilized to predict the quality and pace of patients’ surgical recovery. This data may usher in new ways to measure and predict outcomes.”
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Crawford DA, et al. Poster 307. Presented at: American Association of Hip and Knee Surgeons Annual Meeting; Nov. 2-5, 2023; Grapevine, Texas.
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