[Purpose] The characteristic of electrical activities recorded at the clinical trigger point was examined.
[Materials] A 26-year-old woman complained of chronic shoulder pain. She had a trigger point near GB 21 (Jianjing, Kensei). The electrical activities were recorded at the trigger point and a non- tender point.
[Results] Electrical activities were detected only when the electrode was located on the trigger point andthere was a subjective dull pain sensation. The amplitudes of electrical activities did not change during psychological stress. [ Conclusion ] These results suggest that the electrical activities were the result of nociceptive reflex.

[Objective] We analyzed the clinical findings in 5 patients with osteonecrosis in the medial condyle of the tibia. We also evaluated the usefulness of a tibial percussion test that we developed for examination of differences between the healthy and affected sides in percussion caused by knocking on the tibial rough surface.
[Methods] The subjects were 5 females, who consulted our hospital with a chief complaint of gonalgia and in whom conditions such as osteonecrosis in the medial condyle of the tibia were confirmed by MRI in 4 limbs. In addition to X-p, MRI findings, medical findings by interview, and findings by physical examination were evaluated as clinical findings. Furthermore, the tibial percussion test was performed.
[Results] The causes of pain in the knee joint were unclear in all patients. Pain was severe in 3 patients and marked in 2 patients. Physical examination showed marked tenderness in the medial articular gap and tenderness in the medial condyle of the tibia. In all patients, a difference in the percussion findings between the healthy and affected sides was confirmed by the tibial percussion test.
[Conclusions] These findings indicated that the tibia percussion test in addition to confirmation of characteristic clinical conditions, such as the initial condition of the disease and the severity of tenderness, is useful for the evaluation of conditions of this disease.

(Object) We, in collaboration with Wacoal Corp., assessed the effects of human hemoglobin dynamics associated with pressure stimulus applied by half-ovoid protrusions lined on brassiere straps, which were developed with an intended use by females to safely alleviate shoulder stiffness and associated pain in a convenient manner, and compared them to those of conventional flat and round magnets (5 mm in diameter, 800 Gauss).
(Method) Six healthy females volunteered for each of the four experiments. The participants'thoracic circumference or band size was 70 cm (B70) for experiments one and two, and 80 cm (B80) for three and four. For experiments one and three, we obtained the control hemoglobin (Hb) values, by near-infrared spectroscopy, 20 minutes after participants had worn brassieres with the newly developed straps turned inside out;and were compared to the values obtained after the straps were worn with protrusions pressing down on the skin (Protrusion-lined Strap Group, PST). For experiments two and four, the control Hb values were obtained after the participants had worn generic brassiere straps, and were compared to Hb values obtained after the magnet-lined straps were worn (Magnet-lined Strap Group, MSG).
(Result) In the PSG (B70 &B80), both Oxy-Hb and Total-Hb values increased by stimulation with a 5%significant difference;however, no significant increase was observed in the MSG (B70 &B80). There was no significant difference depending on the band size.

(Discussion) In the present study, the post-stimulation increase of Hb values showed significant differences in PSG as a result of stimulation by protrusions. Stimulation by flat magnets demonstrated no such significance on Hb values, presumably due to the lower pressure to the skin. Stimulation by magnets showed no significant changes in total Hb values despite prior reports of it accelerating the blood flow. The shape with which pressure is applied against the skin may have relevance to the effect of stimulation.
Protrusions left post-stimulation depression marks and flare on the skin surface, suggesting the possible involvement of mechanothermal polymodal receptors.
(Conclusion) Stimulation with the protrusions we developed increased Hb values, showing a regional concentration of hemoglobin. This suggests that it is effective in alleviating shoulder stiffness and associated pain, and lining brassiere straps with the protrusions provides a means for females to self-apply such stimulation safely and conveniently.