Publications by authors named "Kichizo Yamamoto"

Background: It is possible that patients who have undergone total knee arthroplasty (TKA) are at a high risk of falling. However, there are insufficient data to confirm the incidence and risk factors for falling in patients after TKA compared with healthy elderly counterparts. The purpose of this study was to elucidate the incidence and risk factors for falling in patients after TKA compared to the age- and gender-matched healthy elderly.

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The roughness and weakness of bone was really expressed by the character of "sho", which means the sight through the fine small leaves of pinetree in old Japabese seenery.

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Purpose: To prospectively investigate the relationship between physical function and falls among elderly patients who underwent total knee arthroplasty (TKA) and to determine the incidence of falls as well as their risk factors.

Methods: A total of 108 patients (17 male, 91 female) over 60 years of age who underwent TKA were enrolled and who were living independently in community. 75 patients fulfilled our inclusion criteria and 74 (8 male, 66 female) of them agreed to participate.

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As inhibitors of bone resorption, bisphosphonates and vitamin D derivatives have been extensively used for the treatment of osteoporosis in various parts of the world, but the clinical effects of these two groups of agents have rarely been compared in detail. A multicenter, prospective, double-blind controlled study was started comparing the effects of etidronate and alfacalcidol (1-alpha-hydroxycholecalciferol) in 414 patients with established osteoporosis from 36 centers. Among these patients, 135 were given 400 mg etidronate daily at bedtime for 2 weeks followed by 10 weeks off treatment, and this cycle was repeated four times along with a placebo indistinguishable from the alfacalcidol capsule daily throughout the 48 weeks of study (Group A, High Dose Etidronate Group).

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We conducted a survey of all hip fractures in patients 35 years old and over during 1998-2001 in Tottori Prefecture, Japan, and compared them with those reported previously. The survey found 604, 671, 710, 729 patients, in 1998, 1999, 2000, and 2001, respectively. The mean age- and gender-specific incidences (per 100,000 person-years) for men were 108.

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To demonstrate the clinical benefit of risedronate at 2.5 mg daily in the treatment of involutional osteoporosis, the effect of risedronate on incidence of vertebral fracture was compared with that of etidronate. A total of 547 patients with one to four vertebral fractures were randomized to receive either treatment with 2.

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The risk-reducing effect of alendronate on vertebral fractures has been consistently reported. In a 2-year, randomized, double-blind, active drug-controlled (1 microg alfacalcidol) double-dummy study, we also reported that alendronate (5.0 mg) had a fracture-reducing effect in Japanese patients with preexisting vertebral fractures.

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