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Late instrumentation failure after total en bloc spondylectomy
Morio Matsumoto1, Kota Watanabe, Takashi Tsuji
1Department of Orthopaedic Surgery, Keio University, Tokyo, Japan. morio@sc.itc.keio.ac.jp
Journal of Neurosurgery. Spine
|June 7, 2011
Summary
Late instrumentation failure is common after total en bloc spondylectomy (TES) for spinal tumors. Factors like cage subsidence and preoperative irradiation increase risks, but neurological outcomes are generally good.
Area of Science:
- Spine surgery
- Oncology
- Orthopedic surgery
Background:
- Total en bloc spondylectomy (TES) is a complex procedure for malignant spinal tumors.
- Spinal reconstruction is crucial for stability after tumor resection.
- Understanding instrumentation failure is vital for improving patient outcomes.
Observation:
- This study analyzed 15 patients undergoing TES for spinal tumors with over one year of follow-up.
- Instrumentation failure occurred in 6 patients (40%), including rod breakage and cage subsidence.
- Failure was associated with cage subsidence (≥ 5 mm), preoperative irradiation, and fewer instrumented vertebrae (≤ 4).
Findings:
- Late instrumentation failure is a frequent complication following TES.
- Patients experienced pain, but neurological sequelae were not severe.
- Risk factors identified include cage subsidence, preoperative irradiation, and limited posterior fixation.
Implications:
- Meticulous graft site preparation and extended posterior fixation may prevent instrumentation failure.
- Further research into optimizing spinal reconstruction techniques after TES is warranted.
- These findings can inform surgical planning and patient selection for TES procedures.
