|Year : 2018 | Volume
| Issue : 4 | Page : 277-279
Performing the screw fixation from C3 to odontoid process in a patient with Klippel-Feil syndrome and type II odontoid fracture
Mustafa Ogden, Ulas Yuksel, Ibrahim Akkurt, Bulent Bakar
Department of Neurosurgery, Faculty of Medicine, Kirikkale University, Kirikkale, Turkey
|Date of Web Publication||21-Jan-2019|
Dr. Ulas Yuksel
Department of Neurosurgery, Faculty of Medicine, Kirikkale University, Yahsihan, 71450 Kirikkale
Source of Support: None, Conflict of Interest: None
| Abstract|| |
A 56-year-old female patient was admitted with a history of pain during neck movements after cervical injury. Computerized tomography scan revealed type II odontoid fracture and fusion anomaly between C2 and C3 vertebrae. At surgery, the anteroinferior part of C2 vertebra corpus could not be reached; therefore, transodontoid screw was advanced from C3 vertebra toward odontoid process. At follow-up examination, the complaints of the patient had recovered, and fracture line was completely fused. Advancing screw from C3 to odontoid process via anterior cervical approach could be thought an alternative treatment option in the patient with short neck caused from vertebra fusion anomaly and/or obesity.
Keywords: From C3 to odontoid, Klippel–Feil syndrome, odontoid fracture, transodontoid screw
|How to cite this article:|
Ogden M, Yuksel U, Akkurt I, Bakar B. Performing the screw fixation from C3 to odontoid process in a patient with Klippel-Feil syndrome and type II odontoid fracture. J Craniovert Jun Spine 2018;9:277-9
|How to cite this URL:|
Ogden M, Yuksel U, Akkurt I, Bakar B. Performing the screw fixation from C3 to odontoid process in a patient with Klippel-Feil syndrome and type II odontoid fracture. J Craniovert Jun Spine [serial online] 2018 [cited 2020 Apr 2];9:277-9. Available from: http://www.jcvjs.com/text.asp?2018/9/4/277/250480
| Introduction|| |
Odontoid fractures constitute 9%–15% of all cervical fractures. The prevalence of developing of the neurological damage has been reported as 2%–27%, and in patients who develop neurological damage, the risk of morbidity and mortality is predicted to increase. Type II odontoid fractures cause most commonly to vertebral column instability, and open reduction using transodontoid screw is usually recommended through the anterior cervical approach.
Klippel–Feil syndrome (KFS) is defined as a congenital fusion anomaly of two or more cervical vertebrae, and at least half of the patients with this syndrome are determined to have a short neck, low hairline, and restricted neck movements., In the majority of KFS patients, it has been reported that the possibility of odontoid fracture after cervical injury is greater in these patients than in normal individuals.
The case is here presented of a KFS patient who developed type II odontoid fracture after cervical injury and was treated with fixation with a C3 transodontoid screw.
| Case Report|| |
A 56-year-old female patient was evaluated following a traffic accident while in the vehicle. She was conscious without motor deficit and complained increasing pain on movement with advanced degree of restriction in neck movements. She had a short neck with low-set hairline. Cervical computerized tomography (CT) scan revealed type II odontoid fracture on the C2 vertebra and congenital fusion anomaly (KFS) between C2 and C3 vertebrae [Figure 1]. In the patient history, there had been previous restriction in the neck movements and a feeling of tingling and numbness in all extremities with flexion movement of the head.
|Figure 1: Cervical computerized tomography scan revealed type II odontoid fracture on the C2 vertebra and congenital fusion anomaly (Klippel–Feil syndrome) between C2 and C3 vertebrae|
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C2 transodontoid screw application via anterior cervical approach was planned to provide cervical stabilization. Right paramedian vertical incision was made in the supine position; the platysma and deep muscles were retracted with blunt dissection, and the C2 vertebra was visualized under fluoroscopy. However, it was seen that it would not be possible to reach the anteroinferior part of the C2 vertebra through this surgical entry, and it was considered that the C3 vertebra was not too distant from the fracture region because of the C2–C3 vertebra fusion anomaly. Therefore, under fluoroscopy guidance, an odontoid pulling screw was advanced from the anteroinferior section of the C3 vertebra toward the odontoid process successfully [Figure 2].
|Figure 2: Fluoroscopy images show the advancing the transodontoid pulling screw from the anteroinferior section of the C3 vertebra corpus toward the odontoid process|
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In the early postoperative period, her pain decreased significantly. On cervical CT imaging, the fracture lines had not come together at the desired level, but the screw was observed to be completely in the desired location [Figure 3]. The patient was discharged with the recommendation to wear a neck collar for 1 month.
|Figure 3: Postoperative cervical computerized tomography images demonstrate the fracture lines which had not come together at the desired level. However, the screw was observed to be completely in the desired location|
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At the 3-month follow-up examination, the complaints of the patient had almost completely recovered, and it was observed in the radiographic examination that fracture line was completely closed, and fusion had formed [Figure 4].
|Figure 4: At the 3-month follow-up, radiographic images show fully fused fracture line|
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| Discussion|| |
In the literature, fixation with transodontoid screw has been the first option in the surgical treatment of type II odontoid fracture. Subach et al. treated 26 patients with the anterior screw technique for acute type II odontoid fracture and reported a success rate of 96%, with a very low rate of complications and a high rate of fusion obtained. They concluded that as the anterior single screw technique applied to the odontoid process would be more simple and could lead to fewer complications, the approach using this method should be the first preference. Despite some advantages of the anterior approach in the cervical region, the approach to the upper cervical region is not always possible in some patients. Especially in patients with a congenital vertebral development anomaly such as KFS and/or who are obese, it may not be possible to reach this space. Therefore, alternative treatment options and approaches have been developed.
In the current patient, the management was planned with the application of a transodontoid screw through the anterior cervical approach, but with the finding of a short neck in the patient, the C2 vertebra corpus could not be exposed with this approach. However, C2–C3 vertebra fusion anomaly which shortened the vertebral column space was evaluated as an advantage, and it was concluded that it could be possible to advance the screw to the odontoid process over the C3 vertebra corpus, and although the fracture lines could not come together at the optimum level, the technique was applied successfully. To the best of our knowledge, there is no previous report in the literature of a similar application. In the long-term follow-up, the fracture line in the odontoid process was determined to have fully healed, and fusion was completed. Thus, it was concluded that this surgical approach and technique can be applied safely in these types of patients.
Mac Millan and Stauffer stated that the odontoid projection is more sensitive to trauma in vertebra fusion anomaly in this region, because of the increased pressure and excessive loading during hyperflexion and hyperextension of the head. The controversial findings in literature are supportive in nature of the current patient, where type II odontoid fracture was determined following trauma with an existing C2–C3 vertebra fusion anomaly.
| Conclusion|| |
Because of a short neck, transodontoid screw application through the anterior cervical approach may be difficult in patients with type II odontoid fracture and KFS-like congenital vertebra fusion anomaly and/or who are obese. Advancing the screw from C3 to the odontoid process via anterior cervical approach should be evaluated as an alternative treatment option in such patients.
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
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[Figure 1], [Figure 2], [Figure 3], [Figure 4]