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Updated: Mar 29, 2026

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
Published on: September 7, 2022
Upright Time and Sit-To-Stand Transition Progression After Total Hip Arthroplasty: An Inhospital Longitudinal Study
Artaban Johnson Jeldi1, Margaret Grant1, David J Allen2
1Institute for Applied Health Research, Glasgow Caledonian University, Glasgow, UK.
Background:
Although early mobilization in hospital is a key element of post-total hip arthroplasty rehabilitation, it is poorly documented.
Methods:
To gain quantitative insight into inhospital mobilization, upright times and sit-to-stand transitions (STS) were measured using a thigh-mounted movement sensor in 44 participants (13 males and 31 females), age 50 to 82 years, in an observational, postsurgery, inhospital, longitudinal study.
Results:
Some participants performed no activity in the first 24 hours after surgery. However, in the last 24 hours before discharge, participants performed a median of 40 (interquartile range [IQR], 15) STS and spent 134 minutes (IQR, 74 minutes) upright. Activity in rehabilitation constituted 19.4% (IQR, 15.8%) of STS and 13.3% (IQR, 5.5%) of upright time. Females spent longer in hospital (80 hours; IQR, 24) compared to males (54 hours; IQR, 26).
Conclusion:
Although there was considerable activity within rehabilitation periods, a large majority of STS and upright time occurred outside rehabilitation. Within the last 24 hours in hospital, all participants were upright for prolonged periods and completed numerous STS.

