CONCURRENT VALIDITY ANALYSIS OF A CONCENTRIC CIRCLE TARGET FOR FUNCTIONAL GONIOMETRIC MEASUREMENTS

Abstract

The objective of this research was to design and validate an optical viewer of concentric circles for goniometric measurements in functional positions, useful in measuring the range of motion of gross motor skills, for use in posture and movement assessments related to the ergonomic design of objects and spaces. To conduct the validity analysis, a goniometric survey was performed according to clinical practice procedures, considering the three anatomical planes: frontal, sagittal, and superior, in the shoulder, elbow, hip, and knee joints, in the movements of flexion, extension, internal and external rotation, abduction, and adduction. A total of 11 movements were evaluated in a mexican population sample of 48 individuals, (24 male and 24 female), university students between 19 and 24 years of age. The data obtained were analyzed by calculating maximum, minimum, and mean values ??and compared with the Range of Motion (ROM) established by the American Academy of Orthopaedic Surgeons (AAOS), as the normal range of motion for each joint in clinical practice. The results showed similar ranges of motion in the movements evaluated in the same clinical goniometry positions. Discrepancies were identified in some records when postural changes were introduced, particularly when the supine and prone positions were replaced by the standing position for flexion and extension movements of the shoulder and hip joints.