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Formetric 3D / 4D

The Formetric 3D / 4D measurement system is specially developed for fast, non-contact and non-radiation static and dynamic measurement of the surface of the back and spine. It offers 3D and 4D analysis of posture, spine shape and functional parameters, and visualizes a unique 3D reconstruction of the back and spine surface.

Objective clinical parameters of scoliosis, kyphosis, lordosis, spinal rotation, and other clinically relevant parameters have been calculated with a very high degree of accuracy, and can be used in diagnosis, studies, physiotherapy, rehabilitation, and other clinical applications. The all-new 4D technology allows the user to analyze and document the movements and condition of the back and spine. The Formetric system analyzes the surface of the back, in a sophisticated, automatic way without the need for manual fixation of markers on the vertebrae. The anatomical positions of the vertebrae, and rotations are automatically detected using a reconstructed high-resolution surface and anatomical and pathological models of knowledge.

Physical therapy Zagreb

The results model shows the complete form and measurement data of the examined spine and pelvis. With 4D applications, each series of movements will be used and displayed on the screen. The range of applications can be extended through electronic platform lifting, which diagnoses differences in leg lengths and their correct correction, eg orthopedic shoes, etc. The platform is adjustable in all 3 dimensions to simulate pronation, supination or adjustment of heel or toe only.


  • objective and quantitative measurements of statics and posture
  • computerized 3D-reconstruction of the spine including rotations of all segments of the spine
  • high sensitivity and reproduction reviews
  • objective definition of clinical differences in leg length, pelvic tilt, etc.
  • measuring and monitoring scoliosis
  • measurements and monitoring of kyphosis and lordosis
  • an opportunity to recognize whole body statics and a preoperative plan
  • postoperative measurements to improve rehabilitation
  • planning and monitoring physiotherapy procedures
  • internal regulation management

Examples of results - measurement data:

  • hull length VP-DM: 460 mm
  • recess distance DL-DR: 91 mm
  • hull imbalance VP-DM: Tilt -8 mm
  • pelvis DL-DR: Torsion -3 mm
  • pelvis DL-DR: Surface -1.4 °
  • rotation (rms): Surface 9 °
  • rotation (max): -20 °
  • lateral deviation (rms) 15 mm
  • lateral deviation (max) 32 mm
  • apex kyphosis KA Point: -69 mm
  • inflections ITL Apex lordosis: -246 mm
  • LA Kifoze angle ICT-ITL: -398 mm
  • (max) Kyphosis angle: VP-ITL 43 °
  • kyphosis angle VP-T12: angle 39 °
  • lordosis ITL-ILS (max): angle 35 °
  • lordosis ITL-DM Lordosis angle: 42 °
  • T12-DM 40 °

Optical stato-dynamic analysis of the spine and posture

3D / 4D formetic measurement system is the world's leading system for optical 3D measurements of the back and spine. In very close cooperation with the world's leading universities and in projects with the European Community, the technique is in the ongoing development process. In the future, new clinical applications will be created. The integration of other measurement systems, e.g., pedobarography, are important improvements in providing complete measurement solutions to the user. A fully computerized system of internal regulations in just one example of current development. The development team from DIERS is focused on expanding the leading position in this area, whose central position is the static and dynamic function of the spine.

Formetric 3D measurements

The patient stands in a natural standing position, at a distance of 2 m in front of the 3D scanning equipment. The scanner can be raised to the patient's height. The scan time for a single image is very short (40 ms), to eliminate artificial movements. The results and analysis protocols are available immediately after the scan.

Performance of 4D technology

Dynamic measurement of large areas such as back and volume in 3D application techniques. For the new 4D technology, variations between different static x-ray views and also optical 3D measurement have been realized. With the new 4D technology, scan sequences are possible. In the following average processes the posture discrepancy will be reduced and the quality of clinical results will be improved.

Matthiass test

4D technology is ideal for registering human posture over a defined period of time. One example is the realization of the Matthias test. At intervals of, for example, every 3 seconds, the computer realizes 3D images that can be analyzed immediately after the scan.

Movement analysis

Continuous body movements (volume measurements) can be recorded and analyzed using 4D technology. Typical applications are lateral distortion tests, examination on a stepper system. Other clinical applications will be possible in the near future.

About us

Our vision is happy people with no problems in the spine and locomotor system.
That is why we strive to become one of the leading centers for non-operative spinal decompression therapy (DTK) and scoliosis treatment in the world.