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Original Article
Anterior single lag screw fixation in Type II Dens fracture – Indian experience
US Srinivasan M Ch, CS Dhillon M S, FNB, K Mahesha M S, P Vinodh Kumar
M S
Departments of Neurosurgery and Spinal Surgery MIOT Hospitals,
4/112 Mount Poonamalle Road, Manapakkam, Chennai, Tamil Nadu
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Increased rate of non-union of Type II Odontoid fractures with
rigid external orthosis have been reported. Recently technique of
direct anterior screw fixation of the odontoid fracture is being
advocated. Here we report the results of 13 cases of Type II dens
fracture treated by the above method with an age group ranging from
17 to 73 years. An approach identical to the anterior cervical discectomy
was used. Guide tube system devised by Synthes®, single image intensifier
and Langenberg retractors was used to place a single cannulated
screw through the fracture from C2 body into the dens. Among the
13 cases operated, in 11 cases we were successful. In one case while
dissecting the fracture site CSF leak occurred and in another case
the guide wire broke leading to abandoning to screw placement. There
was no other complication due to the surgical procedure. The follow
up period ranged between 2 months to 3 1/2 years. There were no
neurological complications or screw fracture. In 9 of the 11 cases
(82%) either bony union or fibrous unions have occurred. These results
indicate that direct anterior single screw fixation has proved to
be a very successful treatment.
Keywords : Cervical spine injury,
Dens fractures, Atlanto-axial stabilization, Odontoid screw fixation
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Address for correspondence:
Dr. U.S. Srinivasan, M.Ch Chief Neurosurgeon
2B East wood, Fairmont Gardens, 66 Mount Poonamalle Road,
Manapakkam, Chennai – 600 089, Tamil Nadu, India.
Phone: 044-22493233 Mobile: 91 – 98412 94495.
E-mail: ussrini@vsnl.net
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