Storz Magnetolith® (EMTT® Therapy)



Extracorporeal Magnetotransduction Therapy (EMTT®) for regeneration and rehabilitation of musculoskeletal disorders


Extracorporeal Magnetotransduction Therapy (EMTT®) with the Storz MAGNETOLITH® opens up new possibilities in regeneration and rehabilitation. The areas of application include diseases of the musculoskeletal system such as lower back pain and tendinopathies of the rotator cuff or achilles tendon.

EMTT® differs from general forms of magnetic field therapy or PEMF due to the high oscillation frequency of 100 – 300 kHz.  EMTT® is 40% stronger than PEMF and enables a higher penetration depth of 18 cm working at a cellular and nerve level rather than only addressing muscles. Sessions of EMTT® can, therefore, treat a far wider range of indications when compared to PEMF.

Typical indications

Magnetolith EMTT® is the only approved electromagnetic therapy for the treatment of  musculoskeletal diseases of the muscle, bone, joints, nerves, tendons and tissues. The effectiveness of electromagnetic transduction therapy in contributing to pain reduction for:

  • Degenerative joint diseases – Signs of wear and tear, e.g. arthrosis (knee, hip, hands, shoulder, elbow), herniated disc, spondylarthrosis
  • Pain therapy – (Chronic) pain, e.g. back pain, lumbalgia, tension, radiculopathies, heel pain
  • Sport injuries – (Chronic) inflammation of tendons and joints, tendon overload syndrome, osteitis pubis


Are there any side effects of EMTT®? 

EMTT® has no reported side effects. During the treatment the patient may experience mid discomfort and reddening of the skin. The short-lived discomfort the EMTT® treatment creates is just a minor in-convince and will be blinded when compared to the clinical relevant decrease of pain the patient receives.


MAGNETOLITH – Extracorporeal Magnetotransduction Therapy – EMTT

The MAGNETOLITH® in daily practice

Treatment with MAGNETOLITH® is comfortable and straightforward:

  • The patient does not have to undress
  • Effective fatigue-free work for the user
  • Applicator positioning by hand or with the flexible holding arm
  • A treatment session lasts between 5 – 20 minutes depending on the indication
  • Adjustable frequency up to 10 pulses/s


EMTT® Highlights

  • High-frequency magnetic field (100 – 300 kHz)
  • Continuous and reliable operation by water-cooled applicator
  • Click & Connect-Mechanism for a flexible applicator positioning
  • Simple plug in & plug out to change applicator
  • Integrated touch display to adjust energy level, frequency & pulse rate


MAGNETOLITH – Extracorporeal Magnetotransduction Therapy – EMTT

Intuitive operation thanks to clear touch display / Applicator for ease of use


How does EMTT ® support the effectiveness of Extracorporeal Shockwave Therapy ESWT? 

By combining high energy sound waves ESWT on the local treatment area with EMTT ® magnetic fields on a regional treatment area, EMTT® supports the effectiveness of sessions of ESWT by:

  • Activating the metabolism

  • Extends the therapeutic field

  • Further stimulated self-healing
  • Revitalising the area

  • Immediate therapeutic effect


EMTT ® Clinical Evidence 

References of systematic reviews of significant therapeutic effects with STORZ MEDICAL EMTT® devices:

  • Andre Krath. et al., Journal of Orthopaedics, 14(3):410-415, 2017.

  • Electromagnetic transduction therapy in non-specific low back pain: A randomized clinical trial

  • Klüter, T. et al., Electromagnetic Biology and Medicine, 37(4):175-183, 2018.

  • Electromagnetic transduction therapy and shockwave therapy in 86 patients with rotator cuff tendinopathy: A prospective randomized controlled trial.

  • Gerdesmeyer, L. et al., The Journal for Foot and Ankle Surgery, 56(5):964-967, 2017.

  • Electromagnetic Transduction Therapy for Achilles Tendinopathy: A Preliminary Report on a New Technology.

  • Klüter, T. et al., Journal of Orthopedic Research and Therapy: JORT-1113. DOI: 10.29011/2575-8241.001113, 2018.

  • Electromagnetic Transduction Therapy in Patients with Chronic Aseptic Osteitis Pubis

  • Ringeisen, M., Ludger Gerdesmeyer., Presentation at the annual congress of the umbrella association osteology (DVO), March 2018, Dresden.

  • Therapy of traumatic/mechanical bone marrow edema with electromagneto-transduction therapy [in German].

  • Teresa Paolucci1 et al, Electromagnetic Field Therapy: A Rehabilitative Perspective in the Management of Musculoskeletal Pain – A Systematic Review, Journal of Pain Research, July 2020


Patient Brochure & Research PDF’S


Physical Tissue Stimulation – L. Gerdesmeyer,MD

Electromagnetic transduction therapy in non-specific low back pain

Electromagnetic Transduction Therapy for Achilles Tendinopathy

Electromagnetic transduction therapy and shockwave therapy in 86 patients with rotator cuff tendinopathy


 Magnetolith Full Catalogue

Patient flyer EMTT




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