Abstract
Objective To investigate the clinical effects of modified posterior lateral mass atlas screw-axial pedicle screw combined with posterior atlantoaxial tension band for treatment of atlantoaxial instability.Methods From October 2007 to October 2012,23 cases of atlantoaxial instability were immobilized with modified posterior lateral mass atlas screw-axial pedicle screw combined with posterior atlantoaxial tension band.There were 15 males and 8 females with mean age of (42.6 ± 2.7) years (range,32-61 years).Eleven cases were diagnosed as odontoid process fracture combined with atlantoaxial joint dislocation,5 as anterior dislocation of the atlas,and 7 as atlantoaxial joint rotary subluxation.All cases suffered from notable occipitocervical pain and activity restriction,but with no neurological deficit.After atlantoaxial fixation,concurrent posterior fusion was done with iliac autograft or cancellous bone allograft.Follow-up was made at postoperative 3,6,and 12 months,followed by once a year.Results Mean operation time was 120-150 min [(131.7 ± 25.4) min] and mean bleeding was 320-600 ml [(417.6 ± 53.4)ml].All cases went through operations without the occurrence of death or complications months of follow-up (range,12-36 months).All cases obtained bony fusion one year after operation.Conclusion Lateral mass atlas screw-axial pedicle screw combined with posterior atlantoaxial tension band can be feasible and safe in treatment of traumatic atlantoaxial instability.such as nerve blood vessel injury.No implant loosening or breakage occurred after mean (20.7 ± 3.1) Key words: Spinal fractures ; Atlanto-axial joint; Atlantoaxial instability
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call