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Finite element method for nerve root decompression in minimally invasive endoscopic spinal surgery
Yoshihiro Kitahama1,2, Hiroyuki Ohashi3, Hiroki Namba4
1Medical Photonics, Hamamatsu University School of Medicine, Hamamatsu, Japan.
Asian Journal of Endoscopic Surgery
|October 14, 2020
Summary
Finite Element Method (FEM) imaging improved diagnosis for radiculopathy, enabling successful full-endoscopic spine surgery. This novel approach visualized lesions missed by conventional imaging, enhancing patient outcomes and daily function.
Area of Science:
- Spine surgery
- Diagnostic imaging
- Biomechanical simulation
Background:
- Accurate diagnosis is crucial for effective spinal surgery outcomes.
- Advancements in radiculopathy diagnosis support full-endoscopic spine surgery indications.
- Finite Element Method (FEM) was assessed for visualizing lesions missed by conventional imaging.
Observation:
- FEM was applied to two patients with radiculopathy (lumbar and cervical).
- Preoperative and postoperative CT data were used for 3-D imaging and FEM kinetic simulation.
- Both patients underwent successful full endoscopic foraminotomy.
Findings:
- Postoperative radiculopathy resolved in both patients, improving daily activities.
- FEM analysis showed significant reductions in nerve tissue contact area (30-80%) and maximum contact pressure (33-67%).
Implications:
- FEM offers a novel method for perioperative evaluation and simulation of radiculopathy-causing lesions.
- This technique can visualize and digitize complex spinal conditions.
- Further development is needed to integrate FEM into routine clinical practice, overcoming time and cost constraints.
