Forensic Gait Analysis in Criminal Investigations

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During the murder investigation at **Lohagad Fort**, a **Pune** court extended the custody of the accused person to allow police investigators to perform a forensic **gait analysis** on the suspect.

**Gait analysis** refers to the scientific and systematic study of human locomotion, specifically how an individual walks, hops, or runs.
This technique analyzes how the nervous system coordinates continuously with bones, muscles, and joints to produce a unique **biomechanical signature** for every individual.

The core unit of measurement is the **gait cycle**, which tracks body movements from the moment one foot strikes the ground until that same foot touches the floor again.
**The Stance Phase** accounts for about **60%** of the full cycle, beginning with a heel strike and ending when the toe pushes off while supporting full body weight.
**The Swing Phase** covers the remaining **40%** of the cycle, starting when the foot leaves the surface and swings forward without dragging toes on the floor.

**Spatial Parameters** evaluate step length, stride length, walking base width, and toe angle to measure balance, posture, and symmetry.
**Temporal Parameters** record cadence in steps per minute, walking speed, and double-support time to test movement rhythm and efficiency.
Full-body systemic tracking through the **Sheffield Tool** examines a **15-point** movement pattern, covering head, shoulders, arms, torso, hips, knees, and feet.
Modern instrumentation uses high-speed cameras, pressure mats, force plates, and wearable sensors to capture walking mechanics with high precision.

In forensic criminology, gait analysis helps identify suspects from CCTV footage by evaluating walking styles, limps, and posture when face recognition is unavailable.
In healthcare, medical experts use gait patterns to diagnose **Parkinson's disease**, stroke, cerebral palsy, dementia, and orthopedic disorders.
In sports biomechanics, athletes analyze gait cycles to improve running efficiency, avoid injuries, optimize body movement, and design custom footwear.