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Biomedical subjects

M Kamikozuru

Publications and source records attributed to M Kamikozuru.

4 recordsLinked to original sources
PubMed1993

An analysis of failures in primary cervical anterior spinal cord decompression and fusion.

Recently, postoperative results of cervical spondylosis, disc herniation, and ossification of the posterior longitudinal ligament (OPLL) after anterior cervical surgeries have improved. However, occasional unsatisfactory cases needing a second operation remain. We analyzed and developed strategies for multioperated neck (MON) cases; all patients had two operations. From 1965 to 1988, 443 cervical anterior surgeries were performed in our hospitals; 53 (12.0%) of these patients needed second operations. These MON cases were classified by the following causes: pseudarthrosis, graft fracture, insufficient decompression, misdiagnosis, and adjacent disc problems. These groups were analyzed, and the resulting surgical strategies, including indications and techniques of anterior surgery, are described.

Adolescent↗
PubMed1991

[Significance of the anterior floating method for cervical myelopathy due to the ossification of the posterior longitudinal ligament].

In order to determine the clinical effectiveness of anterior decompression(floating method) for treatment of cervical myelopathy caused by the ossification of the posterior longitudinal ligament(OPLL), 33 cases were followed over 5 years after treatment. The floating method utilized was a much simpler procedure than OPLL removal. The clinical results were as follows: excellent in 11 cases, good in 10, improved in 8, unchanged in 4. Three cases showed growth of the OPLL after surgery, but the symptoms in these cases did not deteriorate. Post-surgery the growth of the OPLL can be predicted by precise observation of the radiographs and the myelogram. The incidence of complication was 24 per cent post-surgery (8/33). These results indicate that the floating method appears to be a good treatment for cervical myelopathy from OPLL.

Adult↗
PubMed1982

[Monitoring of the spinal cord function using evoked spinal cord potentials].

Monitoring of the spinal cord function by evoked spinal cord potentials (ESP) has come to be used widely with the establishment of a safe technique using an epidural electrode and the great improvement in medical electronic devices. According to other investigations ESP has been recorded through an electrode placed in the posterior epidural space, it is well known that residual ESP can be actually recorded after transection of the posterior half of the spinal cord and that ESP shows no change after a small transection of the anterior column. If ESP originating from the anterior half of the spinal cord is recorded, it is very useful for monitoring during anterior decompression surgery for myelopathy such as ossification of the posterior longitudinal ligament and cervical spondylosis. The purpose of this report is to analyse ESP originating from the anterior half of the spinal cord experimentally and further investigate the ESP monitoring clinically. Sixty cats were used in this study. ESP recording principally consisted of stimulation to the spinal cord at the level of thoracic or lumbar region and recording of ESP with a monopolar electrode placed in the cervical epidural space. Changes in the ESP after transection and compression of the spinal cord were analysed. Anterior vertebrectomy and laminectomy at C2 and C6 were performed for the purpose of placing an electrode correctly and facilitating transection or compression of the spinal cord. Recording electrodes were placed on both the anterior and posterior surfaces of the dura mater at C2. As the result of this study, it is apparent that there exists the ESP originating from the anterior half of the spinal cord. Such ESPs are more accurately recorded through an anterior placed electrode rather than through that placed posteriorly.

Animals↗