Comparative Study Of Cervical Minimally Invasive Laminoplasty And Single-door Laminoplasty In The Treatment Of Cervical Spondylotic Myelopathy

BACKGROUND AND OBJECTIVECervical spondylotic myelopathy is a serious hazard to humans. Clinically, weoften need to save the nerve function by surgery. There are many ways to treat thisdisease. Cervical spondylotic myelopathy treated with single door laminoplasty hasbeen widely used in clinical practice.Efficacy of this surgery is well, but it has lots ofcomplications. We launched a new surgical approach-cervical minimally invasivelaminoplasty from September2010to January2013. This surgery achieved spinaldecompression while remaining the important structural-spinous ligamentcomplex,and had satisfactory results.We make a comparative study of cervicalminimally invasive laminoplasty and single door in the efficacy of cervical diseasefor clinicians to select surgical approach.METHODS78cases of cervical spondylotic myelopathy were divided into two groups bytheir will, patients in group A accepted minimally invasive cervical angioplasty and patients in group B accepted single door laminoplasty. Compare their efficacy withthe index of JOA score, axial symptoms and cervical curvature.RESULTS AND CONCLUSIONAll cases were followed-up for3-36months. No significant difference in excellentand good rate of Japanese Orthopaedic Association score was detected between the twogroups in final follow-up (P>0.05). The apparent rate of axial symptoms wassignificantly lower in the minimally invasive cervical laminoplasty group than that in thesingle-door laminoplasty group after treatment (P <0.05). Cervical curvature loss wassignificantly lower in the minimally invasive cervical laminoplasty group than that in thesingle-door laminoplasty group (P <0.05). In final follow-up, in the minimally invasivecervical laminoplasty group, two titanium screws of one patient were slightly loose, andno abnormal symptom was observed. In the single-door laminoplasty group, hingebreakage was visible in4patients. The broken vertebral plate was excised. Artificialspinal dura mater was coated on the surface of spinal cord for protection. Resultssuggested that the effect of two surgical methods in promoting functional recovery ofspinal cord is identical. However, complications in the minimally invasive cervicallaminoplasty group are farther fewer than those in the single-door laminoplasty group.