Journal of neurosurgery. Spine
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Comparative Study
Left-right axial rotation within C1-2 after implant removal.
Surgical treatment of atlantoaxial injuries may be performed by a variety of surgical procedures, with each of these having its own specific advantages and disadvantages. To preserve the range of motion within the atlantoaxial joint after surgical treatment, posterior atlantoaxial screw fixation according to the method of Goel and Harms could be beneficial. This technique is not considered to fix the joint permanently if the screws are removed. However, this must not necessarily be true, especially if one notices that cervical joints have a tendency for rapid fusion after surgery. The objective of this study was to analyze left-right axial rotation following implant removal, with the following research questions addressed: 1) is there a relevant rotational left-right mobility in C1-2; 2) is there a difference in mobility depending on sex; 3) is there a correlation of mobility to age; 4) is there a correlation of mobility to the "implant-in-body time"; and 5) is neck pain improved by this method of surgical treatment? ⋯ The authors conclude that removal of the implants 3-6 months after posterior atlantoaxial fixation according to the method of Goel and Harms is beneficial for obtaining some axial rotation within the atlantoaxial joint. The range of motion preserved depends on the age of the patient.