ROM (Range of Motion)
Definition
The measurable angular distance a joint can move through in a specific plane. Expressed in degrees. Active ROM (AROM) is the range achieved by the person's own muscular effort. Passive ROM (PROM) is the range achieved with external assistance. The difference between PROM and AROM indicates motor control capacity within the available range.
Clinical Significance
ROM is the foundational measurement in biomechanical assessment. Deficits in ROM at one joint force compensatory movement at adjacent joints. Asymmetric ROM (left vs. right) indicates structural patterns that influence loading, pain, and performance. Tracking ROM over time provides objective evidence of structural change.
How AKMI Assesses This
AKMI measures ROM at every relevant joint using standardized positions and landmark-based measurement. The 18-test protocol captures bilateral data for hip, ankle, shoulder, thoracic spine, and cervical spine. Data is tracked longitudinally to quantify structural change across assessment cycles.
Get your general assessed
A biomechanical assessment measures rom (range of motion) and its relationship to the rest of your structural chain. 18 tests, objective data, personalized programming.