Trust German spine specialists to get your life back.
ONZ is a world leading institute for motion preserving spine solutions and cutting edge minimally invasive surgery techniques.
Welcome to ONZ
Your Orthopedic-Neurosurgical Practice network in Germany.
ONZ is a globally recognized center for state-of-the-art spine solutions.
Since 2000, we have seen a continuous rise in patients from all over the world who seek our expertise in restoring mobility and quality of life.
At ONZ, we combine cutting-edge medical technology with decades of experience to offer individualized treatment – from conservative therapy to highly specialized surgical procedures.
Our commitment to clear communication and patient-centered care is what sets us apart. Together, we develop the solution that’s right for your spine – and your life.
Your team at ONZ
Testimonial.
I was considering for the top medical help possible. Canada, i guess has not approved of this surgery yet. They are a few years behind, what german technology is. They would have probably end up fusing my vertebra together - and with my activities like sports and construction i just wouldn’t be able to have that loss of movement in my lower back. So I definitely did try whatever I could in Canada first bevor seeking this.
I’ve never been a patient in a hospital before. But i have heard from my support team, many of them have been in hospitals, and they said they never have seen care like they have here, in Germany. I was well tended to, i was just in shock and they kept me laughing and i guess laughter is the best medicine, so it really was a good experience there in the hospital.
The spine specialists.
Dr. Guido Ostermann
Specialist in neurosurgery and expert in the conservative, minimally invasive and surgical treatment of chronic pain in the cervical and lumbar spine.
Dr. Bernd Illerhaus
Specialist in neurosurgery, spinal surgery, manual medicine/chirotherapy and expert in conservative and minimally invasive endoscopic and surgical treatment of degenerative and traumatic spinal diseases.
Dr. Thomas Bierstedt
Dr. Thomas Bierstedt is a specialist in neurosurgery and an expert in the conservative and operative treatment of degenerative and traumatic spinal diseases.
References.
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More InformationFirefighter Mike Manchulenko from Canada about his experience and life after ONZ.
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More InformationPatrick McMullen flew to Germany for spinal surgery, ESP L5/1
Contact Person
Your first point of contact and consulting instance!
Malte Petersen
Managing Director
Since the 1990s, Malte has guided international patients with empathy, clarity, and deep expertise in spinal and orthopedic care. As the architect of our all-inclusive fixed-price treatment concept, he ensures full transparency – from diagnosis to aftercare. He also leads a global liaison team of former patients who now support others on their journey with ONZ.
Malte is the heart and backbone of ONZ’s international program – personally committed, highly experienced, and always approachable.
He takes time to understand each patient’s situation and offers clear, honest guidance throughout the entire treatment journey. With a background in spinal care, medical coordination, and thousands of international cases, Malte ensures that every step at ONZ is transparent, structured, and handled with genuine care.
Put your trust in the center of ONZ’s international expertise – and take your chance to work with the best.
Partners
Hospitals.
Rehab Center.
