1996 年 45 巻 3 号 p. 704-706
Circulatory function is an important prognostic factor for the surgical results of cervical myelopathy. However it is difficult to measure spinal cord blood flow (SCBF) during surgery, therefore until now no investigator has reported such results in human subjects. we measured SCBF during laminoplasty of cervical spine using laser-doppler flowmetry to investigate the relationship between surgical results and SCBF. Eight cases with cervical spondylotic myelopathy and four cases with cervical myelopathy due to OPLL were examined. Surgical results were evaluated using the JOA score and Hirabayashi method.
The average Hirabayashi score in cases with an inceasing SCBF during elevation of lamina was 79.4% and that in cases with a decreasing SCBF was 32.9% which was statistically significant. Measurement of SCBF using laser-doppler flowmetry during laminoplasty of the cervical spine is useful for the evaluation of surgical results.