Improved Walking Steadiness Following total Hip Arthroplasty Compared to Total Knee Arthroplasty.
BACKGROUND: Total knee (TKA) and hip arthroplasty (THA) effectively treat end-stage osteoarthritis by restoring mobility and reducing pain; however, it is unclear how balance and steadiness compare between TKA and THA patients. This study utilized wearable technology to objectively compare functional recovery between TKA and THA patients. METHODS: Two Hundred Nine patients underwent TKA (n = 152) or THA (n = 57) and were followed for 1 year. Participants wore Apple Watches with HealthKit to track daily step count, steadiness, standing duration, gait speed, and estimated 6-minute walk test distance. Data were analyzed at baseline, 6 weeks, 6 months, and 12 months postsurgery. Propensity score matching (1:1 ratio) yielded a final cohort of 110 patients (55 TKA, 55 THA). A multivariate regression analysis was conducted to evaluate the effect of THA vs TKA on steadiness, adjusting for contralateral Kellgren-Lawrence classification, age, sex, and body mass index. RESULTS: Both groups improved mobility and endurance, with similar increases in step count, standing duration, and 6-minute walk test distance over 12 months. THA patients showed significantly greater steadiness at 6 (0.63 vs 0.49, P = .031) and 12 months (0.84 vs 0.66, P = .044). Multivariate analysis confirmed that TKA was associated with lower steadiness scores. CONCLUSIONS: This study, the first to utilize Apple HealthKit data to compare TKA and THA recovery, found that THA patients exhibit better steadiness and balance recovery at 6 and 12 months. These findings suggest that balance-focused rehabilitation may benefit TKA patients. Wearable technology provides valuable, objective insights, enabling personalized guidance and enhancing patient outcomes.
Duke Scholars
Published In
DOI
ISSN
Publication Date
Volume
Start / End Page
Location
Citation