Cervical Pedicle Screw Placement Using Medial Funnel Technique
Korean Journal of Spine
;
: 84-88, 2017.
Article
in English
| WPRIM
| ID: wpr-187211
ABSTRACT
OBJECTIVE:
Cervical pedicle screw (CPS) placement is very challenging due to high risk of neurovascular complications. We devised a new technique (medial funnel technique) to improve the accuracy and feasibility of CPS placement.METHODS:
We reviewed 28 consecutive patients undergoing CPS instrumentation using the medial funnel technique. Their mean age was 51.4 years (range, 30–81 years). Preoperative diagnosis included degenerative disease (n=5), trauma (n=22), and infection (n=1). Screw perforations were graded with the following criteria grade 0 having no perforation, grade 1 having 50% of screw diameter. Grades 0 and 1 were considered as correct position. The degree of perforation was determined by 2 junior neurosurgeons and 1 senior neurosurgeon.RESULTS:
A total of 88 CPSs were inserted. The rate of correct placement was 94.3%; grade 0, 54 screws; grade 1, 29 screws; grade 2, 4 screws; and grade 3, 1 screw. No neurovascular complications or failure of instrumentation occurred. In perforated screws (34 screws), lateral perforations were 4 and medial perforations were 30.CONCLUSION:
We performed CPS insertion using medial funnel technique and achieved 94.3% (83 of 88) of correct placement. And it can decrease lateral perforation.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Bone Screws
/
Cervical Vertebrae
/
Diagnosis
/
Pedicle Screws
/
Neurosurgeons
Type of study:
Diagnostic study
Limits:
Female
/
Humans
Language:
English
Journal:
Korean Journal of Spine
Year:
2017
Type:
Article
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