Does the Access Angle Change the Risk of Approach-Related Complications in Minimally Invasive Lateral Lumbar Interbody Fusion? An MRI Study
Journal of Korean Neurosurgical Society
; : 707-715, 2018.
Article
in En
| WPRIM
| ID: wpr-788735
Responsible library:
WPRO
ABSTRACT
OBJECTIVE: To investigate the potential risk of approach-related complications at different access angles in minimally invasive lateral lumbar interbody fusion.METHODS: Eighty-six axial magnetic resonance images were obtained to analyze the risk of approach-related complications. The access corridor were simulated at different access angles and the potential risk of neurovascular structure injury was evaluated when the access corridor touching or overlapping the corresponding structures at each angle. Furthermore, the safe corridor length was measured when the corridor width was 18 and 22 mm.RESULTS: When access angle was 0°, the potential risk of ipsilateral nerve roots injury was 54.7% at L4–L5. When access angle was 45°, the potential risk of abdominal aorta, contralateral nerve roots or central canal injury at L4–L5 was 79.1%, 74.4%, and 30.2%, respectively. The length of the 18 mm-wide access corridor was largest at 0° and it could reach 44.5 mm at L3–L4 and 46.4 mm at L4–L5. While the length of the 22 mm-wide access corridor was 42.3 mm at L3–L4 and 44.1 mm at L4–L5 at 0°.CONCLUSION: Changes in the access angle would not only affect the ipsilateral neurovascular structures, but also might adversely influence the contralateral neural elements. It should be also noted to surgeons that alteration of the access angle changed the corridor length.
Key words
Full text:
1
Database:
WPRIM
Main subject:
Aorta, Abdominal
/
Magnetic Resonance Imaging
/
Surgeons
Type of study:
Etiology_studies
Language:
En
Journal:
Journal of Korean Neurosurgical Society
Year:
2018
Document type:
Article