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Assessing Pelvic Tilt in Patients Undergoing Total Hip Arthroplasty Using Sensor Technology
Abhinav K Sharma1, Jonathan M Vigdorchik2, David A Kolin2
1Department of Orthopaedic Surgery, University of California, Irvine, School of Medicine, Orange, CA, USA.
Arthroplasty Today
|February 2, 2022
Summary
Wearable sensors accurately replicate pelvic tilt movement in patients before total hip arthroplasty. This study validates the use of wearable technology for measuring pelvic tilt, showing high correlation with radiographic measurements.
Area of Science:
- Orthopedics
- Biomedical Engineering
- Wearable Technology
Background:
- Pelvic tilt measurement is crucial in pre-operative assessments for total hip arthroplasty.
- Accurate and accessible methods for assessing pelvic tilt are needed.
Purpose of the Study:
- To evaluate the accuracy of a commercial wearable sensor in capturing pelvic tilt.
- To compare sensor-based pelvic tilt measurements with radiographic data in patients awaiting total hip arthroplasty.
Main Methods:
- Prospective study involving 61 patients undergoing total hip arthroplasty.
- Wearable sensors placed at S2 and T12, measuring pelvic tilt in sitting and standing positions.
- Comparison of sensor measurements (PT-SEN) with radiographic measurements (PT-RAD) using Pearson and intraclass correlation coefficients (ICCs).
Main Results:
- High correlation between sensor and radiographic pelvic tilt measurements (ICC > 0.97 for both standing and sitting).
- R-squared values consistently above 0.85, indicating strong agreement between methods.
- Accuracy was maintained regardless of patient BMI or sex.
Conclusions:
- Commercial wearable sensors demonstrate high accuracy in replicating pelvic tilt movement.
- Wearable technology offers a reliable alternative for measuring pelvic tilt in the context of total hip arthroplasty.
- Despite potential limitations, wearable sensors are validated for clinical use in this application.
