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ABSTRACT: The authors report 4 cases of Charcot spine treated surgically. In the surgical treatment, combined anterior and posterior with extensive debridement, autogenous bone grafting, and posterior instrumentation is the main therapeutic modality. Some cases with mild bone destruction could be treated by posterior interbody fusion. For the unstable, symptomatic Charcot spine, surgical treatment can provide excellent results.
Journal of Spinal Disorders & Techniques 03/2007; 20(1):85-8. · 1.50 Impact Factor
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ABSTRACT: The authors report two cases of patients with lumbar ossification of the posterior longitudinal ligament (OPLL). One patient underwent surgery via the single posterior approach, and the other patient underwent combined anterior-posterior surgery. The authors consider the anterior approach for excision of the ossified lesion to be the most reasonable for treatment of lumbar OPLL. It is extremely important, however, to select the surgical procedure according to the individual patient's condition.
Journal of Neurosurgery Spine 10/2005; 3(3):230-3. · 1.53 Impact Factor
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ABSTRACT: Expansive laminoplasty of the cervical spine was performed for 15 patients with subaxial lesion (SAL) in rheumatoid arthritis (RA) with or without symptomatic occipitocervical pathology. Clinical results were satisfactory, and radiographic evaluation revealed that the range of movement of the cervical spine decreased to 56.3%, spinal alignment was well preserved, and intervertebral slipping advanced only slightly. Therefore, expansive laminoplasty is shown to be clinically effective in decompressing the subaxial spinal cord without the need for fusion of this region, yet it avoids exacerbating or creating significant instability. We found that it can serve as a useful procedure for treating spinal cord compression caused by SAL in RA. For patients with upper cervical instability, laminoplasty with upper cervical fusion appears to be an effective option. In a case in which kyphosis was observed preoperatively, its deformity became worse after laminoplasty. Thus, it may be advisable to consider subaxial fusion in such cases.
Journal of Spinal Disorders & Techniques 05/2004; 17(2):94-101. · 1.50 Impact Factor
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ABSTRACT: The gait of patients with neurogenic intermittent claudication was analyzed before and after surgery using a ground reaction force plate.
To analyze the gait characteristics of patients with neurogenic intermittent claudication, to evaluate quantitatively their gait improvement after surgical treatment, and to examine the differences in gait characteristics and postoperative improvement among different types of neuropathy.
A number of reports have been published on the pathophysiology or treatment of neurogenic intermittent claudication. However, almost no detailed reports exist on the gait abnormalities associated with this condition.
The subjects were 60 lumbar canal stenosis patients with intermittent claudication who underwent surgery at the authors' hospital. A ground reaction force plate was used for the analysis, and factors related to time and distance (speed, stride, interval, and pitch) were analyzed, as well as factors related to the style of walking (symmetry, reappearance, smoothness, sway, rhythm, and impact).
Before surgery, there were abnormalities of various factors related to the style of walking soon after the patients began to walk. Gait analysis also showed that the pattern of gait abnormality and its improvement after surgery varied depending on the type of neuropathy.
Gait analysis permits objective and quantitative evaluation of the gait characteristics of patients with lumbar canal stenosis and is useful for evaluating responses to surgical treatment in these patients.
Spine 12/2002; 27(22):2509-13. · 2.08 Impact Factor
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Norimasa Nohara,
Eiichi Tanaka,
Takehiro Tomitani,
Mikio Yamamoto,
Hideo Murayama, Yoshio Suda,
Masahiro Endo,
Takeshi Iinuma,
Yukio Tateno,
Fumio Shishido,
Kenji Ishimatsul,
Ken Ueda,
Katsumi Takami
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ABSTRACT: A rotary positron emission computed tomography device is developed for human brain and animal studies. The device utilizes 64 rectangular BGO detectors arranged at unequal spacing on a circular ring. The detector ring is continuously rotated at a constant speed of 60 rpm or less. This single continuous motion of the ring with the detector array provides excellent sampling characteristics and high detector redundancy. The device has a field of view 24 cm in diameter with a slice thickness adjustable from 1 cm to 2 cm. Measured width of system response to a 2 mm diameter line source is 5.8 mm FWHM at the center and less than 9 mm FWHM within a circle 16 cm in diameter. Measured sensitivity including scattered coincidence events is about 17 kcps/pCi/ml for a 20 cm diameter water phantom and 2 cm thick slice.
IEEE Transactions on Nuclear Science 07/1980; · 1.45 Impact Factor
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ABSTRACT: A multicrystal positron camera (MGH type) has been constructed for diagnostic investigation with shortlived positron emitters produced by the NIRS cyclotron. In order to use this camera clinically and experimentally a computer system has been constructed for data collection, reconstruction, image processing, display and driving optional terminals. Since the speed of data collection must be as fast as possible for the dynamic image collection, direct memory access transfer mode are selected for data Timing signals and physiological data are multiplexed with detected event data. For the clinically suitable image display a display terminal with a fine pixel size has been constructed which can be also available to display a fine image such as x-ray CT images. A rotating disc chair has been constructed for transverse section image construction with the positron camera. The chair is automatically controlled by a host minicomputer.
IEEE Transactions on Nuclear Science 05/1979; · 1.45 Impact Factor
