The goal of this clinical trial is to learn if continuous passive motion (CPM) helps prevent ankle joint contracture and muscle loss in critically ill, mechanically ventilated ICU patients. It will also evaluate the feasibility and safety of implementing CPM in this population. The main questions it aims to answer are: Does CPM help preserve ankle dorsiflexion range of motion during immobilization in the ICU? Can ultrasound measurements detect changes in tibialis anterior muscle condition in response to CPM? Researchers will compare one ankle receiving CPM to the other ankle without intervention in the same patient to assess differences in joint mobility and muscle morphology. Participants will: Receive CPM therapy on one ankle for 30 minutes, twice daily, over a 7-day period or until ICU discharge Undergo goniometric and ultrasound assessments at baseline and at the end of the intervention Remain under usual ICU care and monitoring while enrolled in the study
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Change in Passive Ankle Dorsiflexion Range of Motion (ROM)
Timeframe: Baseline and Day 7