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Posterior instrumentation surgery for craniocervical junction instabilities: an update
Joji Inamasu1, Daniel H Kim, Arnett Klugh
1Department of Neurosurgery, Stanford University School of Medicine, Stanford, California, USA. jinamasu@hsc.usf.edu
Neurologia Medico-Chirurgica
|October 1, 2005
Summary
Surgical advancements in craniocervical junction (CCJ) instability offer improved stability and patient recovery. Newer posterior instrumentation techniques are evolving, but long-term safety and surgeon experience remain crucial considerations.
Area of Science:
- Neurosurgery
- Orthopedic Surgery
- Spinal Surgery
Background:
- Craniocervical junction (CCJ) instability treatment has evolved significantly.
- Posterior instrumentation surgery is a primary treatment modality for CCJ instability.
Purpose of the Study:
- To review recent developments in posterior instrumentation surgery for CCJ instability.
- To discuss the evolution of surgical techniques and fixation devices for CCJ instability.
Main Methods:
- Review of current literature on posterior instrumentation for CCJ instability.
- Analysis of surgical techniques including C1-2 transarticular screw fixation, C-1 lateral mass-C-2 pedicle screw fixation, and occipitocervical fixation.
- Discussion of biomechanical studies and material engineering innovations.
Main Results:
- C1-2 transarticular screw fixation is a stable "gold standard" for atlantoaxial instability.
- C-1 lateral mass-C-2 pedicle screw fixation is gaining popularity due to lower risks of vertebral artery injury.
- Occipitocervical fixation with screw constructs offers greater stability than sublaminar wiring for atlantooccipital instability.
- Innovations in instrumentation lead to earlier patient ambulation and recovery.
Conclusions:
- Modern instrumentation surgery for CCJ instability promotes faster recovery and reduced hospital stays.
- Long-term adverse events of new techniques require further evaluation.
- Surgeons must balance adopting new techniques with the safety and efficacy of established methods.