Cervical Artificial Disc Replacement Surgery To Explore Causes Of Heterotopic Ossification

Purpose:Explore the cervical artificial disc replacement surgery causes of heterotopic ossification of cervical spondylosis is typing with the relevant, that is, nerve root/spinal cord-type cervical spondylosis without significant difference between the average rate, the same, single segment/multi-stage cervical Whether the incidence of heterotopic ossification significant difference between the average and to explore artificial disc replacement surgery may be relevant factors in heterotopic ossification.Method:Search in the period 2005-2011, and English literature at Union Hospital of Jilin University in the period 2009-2011 Orthopaedic do cases of cervical artificial disc replacement in 7 cases, summary, retrospective analysis. Summarization of nerve root/ spinal cord cervical, single segment/multilevel cervical disease incidence, and to do statistical analysis.Results:Single segment/multilevel cervical disease group statistical analysis, t value=0.79 0.05, so the single segment and multi-segment cervical heterotopic ossification after cervical disc replacement There was no significant difference, indicating that the multi-segmental cervical artificial disc replacement surgery does not increase the incidence of heterotopic ossification.Radiculopathy/myelopathy group statistical analysis, t value=0.77 0.05, so the nerve root and spinal cord after cervical disc replacement the incidence of heterotopic ossification No significant difference, indicating that the implementation of cervical myelopathy cervical artificial disc replacement surgery does not increase the incidence of heterotopic ossification.Conclusion:Study at home and abroad after cervical artificial disc replacement has not been exact cause of heterotopic ossification, possibly with the following factors.1. This study single-and multi-segmental cervical myelopathy, the purposes of cervical artificial disc replacement surgery the incidence of heterotopic ossification was no significant difference, indicating that the multi-segmental cervical artificial disc replacement surgery does not increase the heterotopic ossification Incidence.2. The results of nerve root type cervical spondylosis and spinal cord, the purposes of artificial disc replacement surgery the incidence of heterotopic ossification was no significant difference, indicating that the implementation of cervical myelopathy cervical artificial disc replacement surgery does not increase the ectopic bone Of incidence.3. intraoperative longus stretch injury and inflammation and bone chips in the debris clean-up operation is not complete.4. The susceptibility of men and the elderly.5. NSAIDS drugs can reduce the incidence of heterotopic ossification, no use may increase the incidence of heterotopic ossification.6. prosthesis size unsuitable or too small.7. Different types of implants between the difference in the incidence of heterotopic ossification.8. vertebral height loss:preoperative lesion segment loss of disc height greater than 20%, postoperative prone HO.9. after activity reduced activity after replacement segment are more vulnerable to≤6°heterotopic ossification.10. resection of the posterior longitudinal ligament and is not placed or completely remove the gelatin sponge to increase the incidence of heterotopic ossification.11. HO incidence of the technology learning curve in a more significant relationship.Keywords:Artificial cervical disc, Heterotopic ossification, Complications...