Nihon Seikeigeka Gakkai zasshi
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Nippon Seikeigeka Gakkai Zasshi · Dec 1989
[Experimental study of the reaction of bone to change in blood flow].
The purpose of this study was to elucidate the effect of blood flow on bone of the lower limb experimentally. The femoral vein and artery were ligated in five to 7 week-old rabbits. The proximal thigh was then tied using an elastic cord with a 7 Kg weight. ⋯ The femur and tibiofibula on the operated side were shortened. Endosteal bone formation and periosteal bone resorption were found in the femur, while periosteal bone formation were observed in the tibiofibula. The changes in blood flow were suggested to cause different reactions of the periosteum and endosteum.
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Nippon Seikeigeka Gakkai Zasshi · May 1989
Case ReportsNeurolysis as a surgical procedure for Morton's neuroma.
Morton's neuroma is regarded as a type of entrapment neuropathy, therefore, neurolysis as surgical treatment is preferable to neurectomy. We have developed a new surgical procedure which consists of a plantar zigzag incision, incision of the plantar aponeurosis, and microsurgical neurolysis of the interdigital nerve. We have performed this operation on 6 nerves with Morton's neuroma in 5 patients and obtained excellent results. ⋯ Since Morton's neuroma is considered to be a type of entrapment neuropathy, it is reasonable to think that neurolysis is preferable to neurectomy. We have developed a renewed procedure of microsurgical neurolysis on nerves involved with Morton's neuroma. Using this procedure, we operated 6 nerves with Morton's neuroma on 5 patients and obtained excellent results, which forms the basis of this report.
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Nippon Seikeigeka Gakkai Zasshi · May 1988
[An experimental study on conductive spinal cord action potentials evoked by direct stimulation of the spinal cord--pathway and source of conductive action potentials in the spinal cord].
The following experiments were carried out in adult cats to clarify the pathway and origin of the conductive spinal cord action potential evoked by dorsal epidural stimulation. (1) Comparison with the potential by surface stimulation of the spinal cord: Since waveforms, conduction velocity, and the relationships between the stimulation site and the change in threshold level were equal to those of surface stimulation, epidural stimulation and direct surface stimulation apparently induced the potential deriving from the same origin. (2) Recording of single fiber action potential: The mean conduction velocity of the dorsal column fiber was approximately 50 m/sec and that of the dorsolateral funiculus fiber was about 80 m/sec. 15-20% of potential N1 and 80-85% of potentials N2 and N3 were composed by the dorsal column fibers, whereas 80-85% of N1 and 15-20% of N2 and N3 were composed by the dorsolateral funiculus fibers.
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Nippon Seikeigeka Gakkai Zasshi · Dec 1987
Ossification of the spinal ligament. A radiographic reevaluation in Bologna, Italy.
A radiographic reevaluation of cervical spine films of 1,258 adult patients and of thoraco-lumbar spine films of 488 of these was performed at the Rizzoli Orthopaedic Institute (Bologne, Italy), in order to detect ossification of the posterior longitudinal ligament (OPLL), the anterior longitudinal ligament (OALL), the yellow ligament (OYL) and the nuchal ligament at the cervical level, and OPLL, OALL and OYL at the thoraco-lumbar level. The incidence of OALL, OYL and ossification of the nuchal ligament corresponded with those previously reported in the literature. ⋯ This incidence is much higher than that hitherto reported in Caucasians, and is nearly the same as that in Japan. Possible explanations for this discrepancy are proposed.