Lumbar spondylosis is a broad clinical term describing age-related degenerative changes in the lower lumbar spine, most frequently affecting the L4-L5 and L5-S1 vertebral segments.
It typically encompasses degenerative disc disease, facet joint osteoarthritis, and the formation of bone spurs (osteophytes).
When degeneration leads to instability, it may progress to degenerative lumbar spondylolisthesis (the slippage of one vertebra over another) or secondary lumbar spinal stenosis (narrowing of the spinal canal).
Treatment Options: From Conservative Care to Motion Preservation
Treatment selection is guided by clinical symptom severity, neurologic involvement, and dynamic motion evaluation rather than static MRI findings alone.
Patients Seek Artificial Disc Replacement in Germany
International patients frequently travel to specialized spine centers in Germany to access advanced motion-preserving spine surgery alternatives to conventional spinal fusion.
Key clinical differentiators include:
- Multi-Level Approaches: Routine performance of multi-level lumbar (L4-L5, L5-S1) and cervical disc arthroplasty.
- Prosthetic Technology: Access to next-generation viscoelastic and unconstrained disc prosthetics (e.g., M6-L, M6-C, ProDisc-L, LP-ESP, activL).
- Anterior Retroperitoneal Exposure: Muscle-sparing anterior lumbar approaches designed to preserve posterior musculature and reduce adjacent segment disease (ASD).
About Dr. Karsten Ritter-Lang: Motion Preservation & Spine Arthroplasty
Dr. Karsten Ritter-Lang is recognized internationally for his clinical focus on intervertebral disc prosthetics and complex spinal reconstruction.
- Surgical Experience: Over 30 years dedicated to motion-preserving spinal procedures, having performed thousands of cervical and lumbar artificial disc replacements.
- Academic Lineage: Trained directly under Prof. Dr. Kurt Schellnack and Dr. Karin Büttner-Janz at the Charité University Hospital in Berlin—the pioneering research team that developed the original Charité artificial disc prosthesis.
- Clinical Focus: Multi-level lumbar disc replacement, motion-preserving reconstruction for degenerative disc disease, and alternatives to spinal fusion.
Remote Consultations & International MRI Reviews
For patients seeking preliminary assessments or second opinions regarding total disc replacement and spinal stenosis treatments:
- Better Disc Replacement: Detailed comparative guides on motion preservation vs. spinal fusion, clinical indications for lumbar total disc replacement (TDR), and multi-level case analyses.
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- Stenum Hospital International Patient Portal: Preliminary remote MRI evaluations, international intake protocols, and surgical technology overviews for European and overseas patients
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Dr. med. Karsten Ritter-Lang M.D.
Diploma of medicine (Institut of Immunology Charité)
1988 – 1991
Doctorade of medicine (Institut of Immunology Charité)
Senior consultant of spinal surgery in two hospitals (DRK Berlin Westend and Stenum Hospital) and private practice in Potsdam,ENDOCERT Certified awarded the title and certification of Specialist for Trauma Surgery (Facharzt für Unfallchirurgie) in 2009
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Investigated multi-axis kinematics and coupled physiological motion of viscoelastic artificial cervical discs (M6-C) compared to intact segments.
Citation: Patwardhan AG, Tzermiadianos MN, Tsitsopoulos PP, Voronov LI, Renner SM, Reo ML, Carandang G, Ritter-Lang K, Havey RM. Primary and coupled motions after cervical total disc replacement using a compressible six-degree-of-freedom prosthesis. European Spine Journal, 2012; 21(4): 618–629.
Cervical and Lumbar Disc Arthroplasty: A Review of Current Implant Design and Outcomes – PMC
Compared safety profiles, range of motion (ROM), pain reduction (VAS), and disability scores (ODI) between single-level versus multi-level lumbar artificial disc replacements.
Citation: Schätz C, Ritter-Lang K, Gössel L, et al. Comparison of Single-Level and Multiple-Level Outcomes of Total Disc Arthroplasty: 24-Month Results. International Journal of Spine Surgery (IJSS), 2015; 9: 14
Long-term outcomes following lumbar total disc replacement with M6-L – PMC
Evaluated 24-month clinical outcomes, restoration of intervertebral disc height, and segment lordosis in lumbar degenerative disc disease treated with the M6-L prosthesis.
Medovex adds Dr. Karsten Ritter-Lang to medical advisory board.