DIERS formetric measuring technology
The most widespread system worldwide for the light-optical 3D Spine & Posture Analysis

The DIERS formetric was developed in close collaboration with leading universities and through research projects with the European Union.
The original clinical objective was the development of a radiation-free spine analysis system to reduce the high X-ray exposure of scoliosis patients during follow-ups.

The DIERS formetric allows a radiation-free and markerless surface topography scanning method including a 3D reconstruction of the spine. Varied clinical parameters of the objective and quantitative analysis of the body statics and posture, scoliosis, and all forms of spinal deformities can be shown.

Based on the formetric form analysis of the back, there is generally no need for reflecting markers. The anatomical landmarks (VP, SP, DL, DR) as well as the spinal center line and spinal rotation are automatically detected by the system.

A compact system:
space requirement is approx 3.0 x 1.5m (9 x 4 ft.)

Automatic Detection of Anatomical Landmarks
replaces the manual positioning of reflecting markers

Correlation Model by Turner-Smith & Drerup

How it works:
The formetric measurement technology is based on the physical principle of Triangulation. Accordingly, the system consists of a light projector which projects a line grid on the back of the patient which is recorded by a camera unit. A computer software analyzes the line curvature and generates from it  - by means of the method of the Photogrammetrie - a three-dimensional model of the surface, comparable to a plaster cast.

Unlike any other system, the DIERS formetric also delivers a 3D reconstruction of the spine without using reflecting marker dots. By the Automatic Detection of Anatomical Landmarks and a scientifically based Correlation Model, which describes the relation between the surface curvature and the orientation of the vertebra, it is possible to reconstruct the curve of the spine and the pelvic position.

In opposition to x-ray, the DIERS formetric provides comprehensive information about the whole body statics and posture in only one measuring process, e.g. spine curvature (lateral and frontal), vertebral rotation, and pelvic position. Even muscular dysbalances can be detected based on the curvature image of the back surface.

Measuring parameters:

▪  Sagittal imbalance (VP-DM)
▪  Pelvic obliquity (DL-DR)
▪  Pelvic torsion (DL-DR)
▪  Pelvic inclination
▪  Kyphotic angle
▪  Lordotic angle
▪  Scoliotic angle
▪  Vertebral rotation
▪  Apical deviation (VPDM)

Clinical Applications:


▪  Scoliosis & scoliotic malpositions
▪  Leg length discrepancies
▪  Pelvic tilt
▪  Pelvic rotation / torsion
▪  Posture-related pain symptoms
▪  Posture variances
▪  Hyperlordosis / -kyphosis
▪  Craniomandibular dysfunctions

THERAPY / Follow-ups

▪  Muscle deficits (Matthiaß-Test, Flamingo Test)
▪  Neurologic symptoms (e.g. Romberg-Test)
▪  Brace treatment
▪  Arthrosis
▪  Osteoporosis
▪  Scheuermann's disease
▪  Ankylosing spondylitis

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