ABSTRACT
Objective Through the exploration of the reality technology to find the treatment of type Ⅱ odontoid fractures in anterior fixation of odontoid fractures with hollow screw .Methods Based on 64 row spiral CT continuous 2-dimensional images of akull ,atlas and axis were reconstructed by the Mimics software ,Mimics software reconstruction atlas ,the atlantoaxial 3D visualization structure in Mimics, simulated surgery was carried out in the MedCAD .Results The structure of three-dimensional reconstruction image was clear ,structure of hollow screw into pin-point was accurate in virtual simulation surgery ,the screw path is correct .Conclusion Mimics Software has great val-ues in the diagnosis of odontoid fractures ,preoperative risk evaluation ,place the hollow screw and clinical teaching ,which provides an objec-tive basis for choice of treatment program .
ABSTRACT
An 18-year-old male presented after a motor vehicle rollover accident. Computed tomography (CT) scan confirmed the diagnosis of Type II odontoid fracture. Considering the patient's young age and the limitations of C1-C2 fusion including significant loss of cervical rotation, temporary internal fixation with a lateral mass fixation of C1 and pedicle fixation of C2 without fusion was done. CT scan done at 6-month follow-up visit showed healed odontoid fracture and excellent C1-C2 alignment. At ninth postoperative month, internal fixation was removed. Patient had normal movements of cervical spine at 1-year follow-up. Temporary internal fixation can be an important tool in the armamentarium of the surgeon in treating type II odontoid fractures in young adults and children. This strategy avoids the complications halo fixation and immobilizes the unstable C1-C2 segment without fusion. Removal of the internal fixation after healing allows restoration of the rotational motion.
Subject(s)
Adolescent , Child , Humans , Male , Young Adult , Diagnosis , Follow-Up Studies , Motor Vehicles , Spine , Tomography, X-Ray ComputedABSTRACT
Objective To study the effect of anterior hollow screw fixation in the treatment of traumatic atlantoaxial instability odontoid fractures .Methods 25 patients with traumatic atlantoaxial instability odontoid frac-tures who received anterior hollow screw fixation were chosen .The neck was fixed for 3 months after operation .The fracture reduction ,fixation and fracture healing ,the elimination of the head and neck clinical symptoms and postopera-tive complications were examined and compared before and after surgery .Results All 25 patients were followed up for 6 to 24 months,an average of 15 months.Odontoid fractures healed without implant loosening ,fracture,wound in-fections and other complications .6 cases of muscle weakness and numbness recovered after 3 to 4 months.Conclusion The current treatment of odontoid fractures in many ways ,but the anterior compression screw fixation in the treatment of odontoid fractures has advantages of simple operation ,reliable fixation,high healing rate,etc.,it is the first choice for this type of fracture .