Kinesiological Analysis Using Inertial Sensor Systems: Methodological Framework and Clinical Applications in Pathological Gait.
Level 3 - non-randomized controlled study
Non-randomized comparative observational cohort study.
PubMed 40732570 · doi:10.3390/s25144435
What was done
Pelvic oscillations in sagittal, frontal, and transverse planes were measured using a wearable inertial measurement unit (IMU) system during assisted and unassisted walking. The study evaluated 49 elderly patients (age > 65) recovering from hip surgery, divided into Group A (n = 15, treated with osteosynthesis metallica) and Group B (n = 34, treated with hip arthroplasty).
What was found
In the frontal plane, pelvic metrics improved significantly from assisted to unassisted walking in both Group A (46.4% to 75.2%, p = 0.001) and Group B (52.6% to 72.2%, p = 0.001). In the transverse plane, Group A improved significantly from 47.7% to 80.2% (p = 0.001), whereas Group B showed a non-significant change from 73.0% to 80.5% (p = 0.068). Changes in the sagittal plane were not statistically significant for either Group A (68.8% to 71.1%, p = 0.313) or Group B (76.4% to 69.1%, p = 0.065).
Why it matters
The findings demonstrate that wearable IMU sensors can objectively capture multidirectional pelvic stability and symmetry differences during post-surgical walking rehabilitation in older adults.
Limits
The sample size was modest (n = 49 total, with only 15 in the osteosynthesis group). The abstract does not define the exact derivation or meaning of the reported percentage metrics, nor does it include a healthy age-matched control group or longitudinal follow-up on functional recovery.
Cited by
- supports Human body movement occurs across three primary anatomical planes: the sagittal, frontal, and rotational (transverse) planes.